This document describes the hardware interface of the module, which can help users quickly understand the interface definition, electrical performance and structure size of the module. Combined with this document and other application documents, users can understand and use A7600E-H module to design and develop applications quickly.

SIMCom provides a complete set of evaluation board to facilitate the test and use of A7600C module. The evaluation board tool comprises an EVB board, an antenna, and other peripherals.

1.1

Product Outline

A7600E-H module support GSM, WCDMA, LTE-TDD and LTE-FDD. Users can choose different models flexibly to meet the diversified market demand.

Please refer to the following table for detailed frequency band Description:

Table 1: A7600E-H frequency bands

STANDARD

GSM

WCDMA

LTE-FDD

LTE-TDD

Hardware Interface Overview

A7600E-H provides the following hardware interfaces.

 Power input

 USB 2.0 interface

 Two UART interfaces, one full function serial port and one debug serial port

 SDC interfaces, one dedicated to EMMC / SD card and one dedicated to WIFI interface (* in development)

 USIM card interface, support hot plug

 General input and output interfaces (GPIO)

 ADC interfaces

 Power supply output

 PCM digital audio interface

 I2C interfaces

 USB boot download and guidance interface

 SPI interface

 Network status indication interface

 Antenna interfaces

 Module operation status indication interface

 Flight mode control interface

1.3

Hardware Block Diagram

The block diagram of the A7600E-H module is shown in the figure below.

www.simcom.com

10/70

A7600E-H Hardware Design V1.02

Figure 1: Block diagram

1.4

Functional Overview

Table 2: General features

Feature

Power supply

Power consumption

BAND

TX power

Implementation

VBAT: 3.4V ~4.2V,Recommended VBAT: 3.8V

Current consumption in sleep mode: <5mA

Refer to Table 1

GSM/GPRS power class:

--EGSM900: 4 (33dBm ± 2dB) www.simcom.com

11/70

A7600E-H Hardware Design V1.02

Data transmission throughput

Antenna interface

Short Message （ SMS

USIM Card interface

USIM application toolkit

Phonebook management

Audio feature

UART interface

SD/SDIO

USB interface

Firmware upgrade

Physical characteristics

Temperature range

）

--DCS1800: 1 (30Bm ± 2dB)

EDGE power class:

-- EGSM90 0: E2 (27dBm ± 3dB)

-- DCS1800: E1(26dBm+3dB/-4dB)

UMTS power class:

--WCDMA :3 (24dBm+1/-3dB)

LTE power class: 3 (23Bm±2.7dB)

GPRS Multiple time slot level 12

EDGE Multiple time slot level 12

UMTS R99: 384 kbps DL/UL

HSPA+: 5.76 Mbps(UL), 42 Mbps(DL)

FDD-LTE category 4 : 150 Mbps (DL),50 Mbps (UL)

TDD-LTE category 4 : 130 Mbps (DL),35 Mbps (UL)

GSM/UMTS/LTE Main antenna interface

UMTS/LTE Diversity antenna interface

MT, MO, CB, Text, PDU mode

Short Message （ SMS ） storage device: USIM Card, CB does not support saving in SIM Card

Support CS domain and PS domain SMS

Support 1.8V/3V USIM card

Support SAT class3, GSM 11.14 Release 99

Support USAT

Support phonebook types : SM/FD/ON/AP/SDN

PCM Digital Audio interface

●Full function serial port

Baud rate support from 9600bps to 3.6Mbps

AT command and data can be sent through serial port

Support RTS/CTS Hardware flow control

Support serial port multiplexing function conforming to GSM 07.10

protocol

●Debug serial port

Support debug usage

Support SDC interfaces, clock frequency up to 200MHz

USB 2.0 compliant, host mode not supported.

This interface can be used for AT command sending, data transmission, software debugging and upgrading.

Firmware upgrade over USB interface

Dimension: 30*30*2.5mm

Weight: 4.6g

Operation temperature: -30 ℃ ~ +80 ℃

Extended operation temperature: -40 ℃ ~ +85 ℃ *

Storage temperature: -45 ℃ ~ +90 ℃ www.simcom.com

12/70

A7600E-H Hardware Design V1.02

NOTE

Module is able to make and receive voice calls, data calls, SMS and make GPRS/UMTS/HSPA+/LTE traffic in -40 ℃ ~ +85 ℃ . The performance will be reduced slightly from the 3GPP specifications if the temperature is outside the normal operating temperature range and still within the extended operating temperature range.

www.simcom.com

13/70

Package Information

2.1

Pin Assignment Overview

A7600E-H provides 119 pins interface.

A7600E-H Hardware Design V1.02

www.simcom.com

Figure 2: Module pin diagram (Top view)

14/70

Table 3: Pin Description

Pin No.

Pin name

1 GND

PWRKEY

GND

SPI_MISO

SPI_CS

VBUS

USB_DP

VDD_1V8

USIM_DATA

USIM_CLK

SD_CMD

SD_DATA1

SD_DATA3

SDIO_DATA1

SDIO_CMD

SDIO_DATA3

GPIO_03

GND

VBAT

GND

GPIO_63

ADC1

STATUS

NETLIGHT

USIM_DET

I2C1_SCL

GND

AUX_ANT

GND

VBAT

GND

CTS

TXD

PCM_OUT

PCM_SYNC www.simcom.com

A7600E-H Hardware Design V1.02

Pin No.

Pin name

2 GND

RESET

SPI_CLK

SPI_MOSI

GND

USB_DN

GND

GPIO_16

USIM_RST

USIM_VDD

SD_DATA0

I2C1_SDA

GND

VBAT

GND

RTS

RXD

DCD

DTR

PCM_IN

PCM_CLK

SD_DATA2

SD_CLK

SDIO_DATA2

SDIO_DATA0

SDIO_CLK

GPIO_06

VBAT

GND

CP_UART_TXD

VDD_AUX

ADC2

SD_DET

GPIO_43

GPIO_41

FLIGHTMODE

15/70

101

111

113

115

117

119

103

105

107

109

GND

CLK_32KHZ

GND

GPIO_12

USB_BOOT

GPIO_77

GND

GPIO_18

I2C2_SCL

GND

WLAN_CLK_EN

GPIO_22

GPIO_14

100

102

112

114

116

118

104

106

108

110

A7600E-H Hardware Design V1.02

GND

MAIN_ANT

WLAN_PDN

GPIO_02

GND

CP_UART_RXD

I2C2_SDA

GND

GPIO_01

WLAN_26M_CLK

GND

NOTE

‘USB_BOOT’ cannot be pulled up before the module powered up, otherwise it will affect the normal start-up of the module.

2.2

Pin Description

Table 4: IO parameters definition

Pin type Description

Power input

Power output

Analog input

Analog output www.simcom.com

16/70

A7600E-H Hardware Design V1.02

I/O

DOH

DOL

Input/output

Digital input

Digital output

Digital output with high level

Digital output with low level

Pull up

Pull down

Open Drain

Table 5: IO parameters definition

Power domain

1.8V

2.8V

3.3V

1.8V/2.8V/3.

Parameter Description Min

VCC=1.8V

VIH

VIL

Rpu

Rpd

High level input

Low level input

Pull up resistor

Pull down resistor

VCC * 0.7

-0.4

30 KΩ

VCC=2.8V

VIH

VIL

Rpu

Rpd

VCC=3.3V

VIH

VIL

Rpu

Rpd

High level input

Low level input

Pull up resistor

Pull down resistor

High level input

Low level input

Pull up resistor

Pull down resistor

VCC * 0.7

-0.4

30 KΩ

VCC * 0.75

-0.4

40KΩ

VCC = 1.8, 2.8, and 3.3 V Typical

IIL

Input leakage current

-500 nA

Output DC Operating Conditions (VCC = 1.8 V Typical)

VOH

MFPR[DRIVE]

Output level range

Maximum current driving capacity at high level output

VCC - 0.4

Typ.

1.8V

60 KΩ

1.8V

80KΩ

IOH =

(mA min)

-3 mA

-6 mA

-9 mA

Max

VCC + 0.4

VCC *0.25

150 KΩ

VCC + 0.4

VCC *0.25

200 KΩ

VCC + 0.4

VCC * 0.25

150 KΩ

500nA

VCC www.simcom.com

17/70

A7600E-H Hardware Design V1.02

Table 6: Pin description

Pin name

Power supply

Pin No.

Pin parameter

Power domain Type

Description

VBAT

VDD_AUX

38,39,62,

44 -

Note

A7600E-H input voltage ranges from 3.4V to 4.2V, and the peak current value can reach 2A.

Output current limit: 400mA,

Output voltage: 3V (default).

1.8V power output, output current up to 50 mA. It is on by default.

SD card power supply

If unused, keep it open.

VDD_1V8 15

GND

1,2,5,10,

14,37,40,

41,43,57,

58,60,61,

64,65,77,

78,80,81,

88~105,1

10,111,1

System Control

Ground

PWRKEY

RESET

4 -

DI,PU

Power ON/OFF input, active low.

VIH: 0.7*VBAT

VIL: 0.5V

DI,PU

System reset control input, active low.

VIH: 0.7*VBAT

VIL: 0.5V

PWRKEY has been internally pulled-up to VBAT with 50KΩ resistor, default high.

RESET has been pulled-up to VBAT with 50KΩ

(typical) resistor, default high.

SDC interface

SD_CMD

SD_DATA0

SD_DATA1

SD_DATA2

SD_DATA3

SD_CLK

USIM interface

USIM_DATA 17

1.8/3.0V

I/O,PU SDC bus command output

I/O,PU

SDC bus data I/O

I/O,PU

DO,PD SDC bus clock output

If unused, keep it open.

www.simcom.com

18/70

A7600E-H Hardware Design V1.02

USIM_RST

USIM_CLK

USIM_VDD

USIM_DET

USB interface

VBUS 11 -

USB_DN 12 -

USB_DP 13 -

Full function UART interface

RTS

CTS

RXD

TXD

DCD

DTR

1.8V

SPI interface

SPI_CLK 6 1.8V

SPI_MISO 7 1.8V

SPI_MOSI 8

SPI_CS

Debug UART

CP_UART_TX

CP_UART_RX

I2C interface

I2C2_SCL

I2C2_SDA

I2C1_SCL

106

109

108

I2C1_SDA 56

1.8V

1.8/3.0V

1.8V

I/O

I/O resistor to USIM_VDD.

I/O,PU USIM bus reset output.

I/O,PU USIM bus clock output.

USIM card power supply output, Supports 1.8v/3.0v

output according to the card type, Its output current is up to 50mA.

USIM detect PIN ， can be set to active high/low by sending

AT command ， please refer to document [23].

Valid USB detection input.

Vmin=3V, Vmax=5.25V,

Vnorm=5V

Negative line of the differential, bi-directional USB signal.

Positive line of the differential, bi-directional USB signal.

DI RTS output

CTS input

Data input

DOH Data output

DO Ringing indicator

DO Carrier detection

DI DTE Ready

DOH

Log output

Log input

I/O

Clock signal

Master device data input, slave device data output

Master device data output, slave device data input

Chip Select

If unused, keep it open.

I2C clock output

I2C data I/O

I2C clock output

I2C data I/O

If unused, keep it open.

Default used as debug port.

If unused, keep it open. These pins have been

Internally pull-up to VDD_1.8.

www.simcom.com

19/70

SDIO interface

SDIO_DATA1 27

SDIO_DATA2 28

SDIO_CMD 29

SDIO_DATA0 30

SDIO_DATA3 31

SDIO_CLK 32

PCM interface

PCM_OUT 73

PCM_IN

PCM_SYNC

PCM_CLK

GPIO

GPIO_16 16

GPIO_03

GPIO_06

GPIO_63

GPIO_43

GPIO_41

GPIO_12

GPIO_02

GPIO_77

GPIO_18

GPIO_01

107

112 www.simcom.com

1.8V

I/O

SDIO data bus byte 1

SDIO data bus byte 2

SDIO bus command

SDIO data bus byte 0

SDIO data bus byte 3

SDIO bus clock

DO,PD PCM data output

DI,PD PCM data input

I/O,PD PCM SYNC signal

DO,PU PCM clock output

A7600E-H Hardware Design V1.02

External power supply cannot be used to pull up these pins, otherwise there will be voltage leakage .

If unused, keep it open.

IO,PU General purple I/O

IO,PD General purple I/O

IO,PU

IO,PD

IO,PU

General purple I/O

If unused, keep it open.

20/70

A7600E-H Hardware Design V1.02

GPIO_22 117

GPIO_14 119

ANT interface

MAIN_ANT

AUX_ANT

Other pins

ADC1 47

1.8V

IO,PD General purple I/O

AIO

Main ANT interface

Diversity ANT interface

If unused, keep it open.

Internally NC

AI General Purpose ADC

ADC2 46 AI General Purpose ADC

CLK_32KHZ

NETLIGHT

USB_BOOT

FLIGHTMODE 54

1.8V

32K CLK Buffered crystal output.

Network registration status indicator (LED).

For more detail, please refer the chapter 3.12.

*Flight mode control input (in software development):

High level (suspended): normal mode

Low level: flight mode

Firmware download guide control input. when pull-up to

1.8V and press

PWRKEY,A7600E-H will access in USB download mode.

WLAN Function related pin (in function development)

WLAN_PDN

WLAN_CLK_E

WLAN_26M_C

GPIO_41

115

114

1.8V

WLAN full power down control

RF858 WLAN reversed pin: clock 1 enable

RF858 WLAN reversed pin:

26M CLK

GPIO_41/WIFI wake up multiplexer pin

If unused, keep it open.

Do place 2 test points for debug.

DO NOT PULL

UP USB_BOOT

DURING

NORMAL

POWER UP!

www.simcom.com

21/70

A7600E-H Hardware Design V1.02

2.3

Mechanical Information

The following figure shows the package outline drawing of A7600E-H module.

Figure 3: Dimension drawing (Unit: mm)

NOTE

The size of 30*30mm do not include Burr area.

www.simcom.com

22/70

2.4

Recommend PCB Footprint Dimension

A7600E-H Hardware Design V1.02

www.simcom.com

Figure 4: Recommend PCB footprint Dimension (Unit: mm)

23/70

2.5

Recommend Stencil Size

Recommend stencil thickness≥0.15mm and <0.18mm.

A7600E-H Hardware Design V1.02

www.simcom.com

Figure 5: Recommend stencil dimension (Unit: mm)

24/70

A7600E-H Hardware Design V1.02

Interface Application

3.1

Power Supply

A7600E-H offers four power supply pins (38, 39, 62, 63) as VBAT power input pin.A7600E-H use these four pins supply the internal RF and baseband circuit.

If the customer adopts the double-layer board design, the power supply of the module can only connect 62,

63 pins, or only connect 38, 39 pins, because these four pins are connected together internally, so that the customer's PCB can get a better ground plane.

When the module is at the maximum power in GSM TX mode, the peak current can reach 2A (peak current), which results in a large voltage drop on Vbat. In order to ensure that the voltage drop is less than 300mV, the power supply capacity of external power supply must be no less than 2A.

The following figure shows the Vbat voltage drop.

Figure 6: Burst current cause VBAT drop

NOTE

Test condition: Vbat power supply 3.8V

Test on SIMCom EVB board and with 330 μf tantalum capacitance on Vbat.

www.simcom.com

25/70

A7600E-H Hardware Design V1.02

Table 7: VBAT pins electronic characteristic

Parameter Description

VBAT

VBAT(peak)

VBAT(average)

VBAT(sleep)

VBAT(power-off)

Module supply voltage

Module consumption peak current

Module average consumption current (normal mode)

Module average consumption current (sleep mode)

Module average consumption current （ off leakage current ）

Min Typ.

Max Unit

3.4

3.8

4.2

Refer to Table 40

20 uA

3.1.1

Power Supply Design Guide

In the user's design, Make sure that the voltage on the VBAT pins will never drop below 3.4V even when the module current consumption reaches 2A. If the voltage drops below 3.4V, the RF performance of the module will be affected.

NOTE when the power supply can provide a peak current of 2A, the total capacity of the external power supply capacitance is recommended to be no less than 300uf. If the peak current of 2A cannot be provided, the total capacity of the external capacitance is recommended to be no less than 1000uf to ensure that the voltage drop on the Vbat pin at any time is not more than 300mV.

It is recommended to place two 0.1 / 1 μ f ceramic capacitors near Vbat to improve RF performance and system stability. At the same time, it is recommended that the Vbat layout routing width from the power supply on the PCB to the module be at least 2mm. Reference design recommendations are as follows:

If the Vbat input contains high-frequency interference, it is recommended to add magnetic beads for filtering.

The recommended types of magnetic beads are BLM21PG300SN1D and MPZ2012S221A.

Besides ， MCU in the user design must have the function of powering off the VBAT PIN in case of module run abnormal. Cut off VBAT power supply just for emergency use ， and use PWRKEY/RESET for normal power sequence. In secondary development, customer can adopt a Single-Chip Microcomputer to control

PWRKEY and achieve watch-dog timer function.

www.simcom.com

26/70

A7600E-H Hardware Design V1.02

Figure 7: VBAT input reference circuit

In addition, in order to prevent the damage of A7600E-H caused by surge and overvoltage, it is recommended to parallel one TVS on the Vbat pin of the module.

Table 8: Recommended TVS diode list

No.

Manufacturer Part Number

1 JCET ESDBW5V0A1

Prisemi

WAYON

WILL

WAYON

PESDHC2FD4V5BH

WS05DPF-B

ESD5611N

ESD56151W05

WS4.5DPV

RWM

4.5V

Package

DFN1006-2L

SOD-323

DFN1610-2L

3.1.2

Recommended Power Supply Circuit

It is recommended that a switching mode power supply or a linear regulator power supply is used. The following figure shows the linear regulator reference circuit: www.simcom.com

Figure 8: Recommended circuit for linear power supply

27/70

The following figure shows the DC-DC regulator reference circuit:

A7600E-H Hardware Design V1.02

Figure 9: Recommended circuits for switching power supply

3.1.3

Voltage Monitor

AT command ‘AT+CBC’ can be used to monitor VBAT voltage.

AT command ‘AT+CVALARM’ can be used to set high/low voltage alarm, When the actual voltage exceeds the preset range, a warning message will be reported through the AT port.

AT command ‘AT+CPMVT’ can be used to set high/low voltage power off, When the actual voltage exceeds the preset range, the module will shut down automatically.

NOTE overvoltage alarm and overvoltage shutdown are off by default. For details of at commands, please refer to document [1].

3.2

Power On/ Off And Reset

3.2.1

Module Power on

Customer can power on the module by pulling down the PWRKEY pin. This pin has been pulled up inside www.simcom.com

28/70

A7600E-H Hardware Design V1.02

the module to Vbat.

It is recommended that when using the module, adding TVS diode at the module pin can effectively enhance the ESD performance.

The recommended circuit is as follows:

Figure 10: Power on/off reference circuit

NOTE

When PWRKEY pin is connected to the ground through 0 ohm resistor, the module will start automatically.

Do not parallel capacitors which the value is exceed 10 n F on PWRKEY or RESET pin. It will cause module power on automatically when VBAT powered.

It is forbidden to pull down both RESET key and PWRKEY to power on the module at the same time.

www.simcom.com

29/70

A7600E-H Hardware Design V1.02

Figure 11: PWRKEY power on sequence

Table 9: Power on sequence parameters

Symbol

T on

T on(status)

T on(uart)

T on(vdd_aux)

T on(usb)

Parameter

Power on low level pulse width

Power on time (according to status pin)

Power on time (according to UART interface)

Power on time (according to

VDD_AUX pin)

Power on time (according to USB interface)

PWRKEY input high voltage level

PWRKEY input low voltage level

Min.

Typ.

8.5

2.94V

13.7

6.8

7.7

Max.

VBAT

0.5V

Unit ms s s s s

3.2.2

Module Power off

A7600E-H has the following shutdown methods:

 Power off by pulling the PWRKEY# pin down to a low level.

 Power off Module by AT command ‘AT+CPOF’.

 Over-voltage or under-voltage automatic power off.

 Over-temperature or under-temperature automatic power off.

It is strongly recommended that the customer use PWRKEY or ‘AT+CPOF’ to shut down, and then power off Vbat (especially when the module does not need to work). In addition, the customer cannot shut down www.simcom.com

30/70

A7600E-H Hardware Design V1.02

Vbat by disconnecting it, which may cause damage to flash.

NOTE when the temperature exceeds the range of - 30 ~ + 80 ℃ , A7600E-H will report warning information through AT port. When the temperature exceeds the range of - 40 ~ + 85 ℃ , A7600E-H will shut down automatically. For a detailed description of ‘AT+ CPOF’ and ‘AT+ CPMVT’, please refer to document

[1].

PWRKEY can be used to power off the module, power off sequence see the following figure:

Figure 12: PWRKEY power off sequence

Table 10: Power off sequence parameters

Symbol

T off

T off(status)

T off(uart)

T off(usb)

T off(VDD_AUX)

T off-on

Parameter

Power off low level pulse width

Power off time(according to status interface)

Power off time(according to UART interface)

Power off time(according to USB interface)

Power off time(according to VDD_AUX pin)

Power off - power on buffer time

Min.

2.5

Typ.

8.9

Max.

Unit

11 s

11 s s s s www.simcom.com

31/70

A7600E-H Hardware Design V1.02

NOTE the status pin can be used to judge whether the module is powered on or not. When the module is powered on and initialization is completed, the status outputs a high level, otherwise the low level will be maintained all the time.

3.2.3 Module Reset

A7600E-H can restart the module by pulling down the reset pin of the module. Reset pin also has the function of power on when PMU first time be given a valid supply voltage (active low, but this key has no shutdown function). After first time power on, some register of this pin will be written then it will lose this function, so it is recommended to use PWRKEY to power on the module and RESET key only used as reset function.

A 50K Ω resistor is used to pull-up to VBAT inside the module, so it is no need to add pull-up resistor outside. The recommended circuit is showed as follows:

Figure 13: Reference reset circuit

Table 11: RESET electric parameter

Symbol

T reset

Parameter

Restart low level pulse width www.simcom.com

Min.

Typ.

2.5

Max.

Unit

32/70

A7600E-H Hardware Design V1.02

RESET pin input high voltage

RESET pin input low voltage

2.94

VBAT

0.5

NOTE it is recommended to use the reset pin only in case of emergency, such as the module is not responding. The reset time is recommended to be 2.5s.

3.3

UART

A7600E-H provides two serial ports, the main communication serial port is UART, and the CP_UART dedicate to printing log.

When using the full function serial port, you can refer to the following connection mode:

Figure 14: Serial port connection diagram (full function mode)

When using 2-wire serial port, please refer to the following connection mode: www.simcom.com

Figure 15: Serial port connection diagram (NULL mode)

33/70

A7600E-H Hardware Design V1.02

The following figure shows the use of triode for level shifter circuits. The circuit with dotted line can refer to the circuit with solid line TXD and RXD, and attention shall be paid to the direction of signal.

The recommended triode model is MMBT3904.

Figure 16: Triode level conversion circuit

NOTE

A7600E-H supports the following baud rates: 9600, 19200, 38400, 57600, 115200, 230400, 460800,

921600 ,1842000, 3686400. The default baud rate is 115200bps.

3.4

USB Interface

The A7600E-H contains a USB interface compliant with the USB2.0 specification as a peripheral, but does not support USB charging function and does not support USB HOST mode.

USB is the main debugging port and software upgrade interface. It is recommended that customers reserve

USB test points during design. If a main control chip is connected, 0R resistors must be reserved for switching external test points during design, as shown in the figure below.

3.4.1

USB Reference Design

A7600E-H can be used as a USB slave device. The recommended connection circuit diagram is as follows: www.simcom.com

34/70

A7600E-H Hardware Design V1.02

Figure 17: USB circuit diagram

Because of the high bit rate on USB bus, more attention should be paid to the influence of the junction capacitance of the ESD component on USB data lines. On USB_VBUS line, customers should pay attention to the selection of the D3 device when using it. It is recommended to choose an anti-static and anti-surge two-in-one device.

NOTE

1. The USB data cable must be strictly routed in 90Ω +/- 10% differential. The TVS devices D1 and D2 on the data line must be selected with equivalent capacitance less than 1pF. The TVS device should be placed near the USB connector or test point, recommended models ESD73011N and

WS05DUCFM.

2. The detection of USB2.0 speed is determined automatically by the USB protocol. The customer does not need to pull up the DP external, otherwise it may affect the device USB enumeration.

3.4.2

USB_BOOT Interface

A7600E-H provides one forced download boot interface ‘USB_BOOT’.

Table 12: USB_BOOT description

Pin number Pin name

85 USB_BOOT

I/O

Description

Force download boot port

Power domain

1.8V

Default state

B-PD

Remark

If the module upgrade fails to boot, you can force upgrade through the USB_BOOT port.

Before the module is powered on, pull the USB_BOOT pin to 1.8V, then apply VBAT power to the module, and press RESET to enter the download mode. After entering the download mode, you need to release www.simcom.com

35/70

USB_BOOT and remove the pull-up.

A7600E-H Hardware Design V1.02

Figure 18: Reference USB_BOOT circuit

Customers will see the download port in the device manager port of the widows system.

Figure 19: Force-download port

NOTE

USB_BOOT only has the function of forcing download and booting before booting (it cannot be pulled up).

3.5

USIM Interface

A7600E-H supports both 1.8V and 3.0V USIM Cards. The interface power of the USIM card is provided by the voltage regulator inside the module, and the normal voltage value is 3V or 1.8V.

Table 13: USIM electronic characteristic in 1.8V mode (USIM_VDD=1.8V)

Symbol Parameter

USIM_VDD LDO power output voltage

High-level input voltage

Min.

1.62

0.7*USIM_VDD -

Typ.

Max.

1.8

1.98

Unit

USIM_VDD +0.4

V www.simcom.com

36/70

Low-level input voltage

High-level output voltage

Low-level output voltage

-0.4

USIM_VDD -0.4

0 0

A7600E-H Hardware Design V1.02

0.25*USIM_VDD V

USIM_VDD V

0.25*USIM_VDD V

Table 14: USIM electronic characteristic in 3.0V mode (USIM_VDD=3V)

Symbol Parameter

USIM_VDD LDO power output voltage

High-level input voltage

Low-level input voltage

High-level output voltage

Low-level output voltage

Min.

2.7

0.7*USIM_VDD

-0.4

USIM_VDD -0.45 -

0 0

Typ.

Max.

3 3.3

USIM_VDD +0.4

0.25*USIM_VDD V

USIM_VDD V

0.25*USIM_VDD V

Unit

3.5.1

USIM Application Guide

It is recommended to use an ESD protection component such as ESDA6V1W5 produced by ST

(www.st.com) or SMF15C produced by ON SEMI (www.onsemi.com). Note that the USIM peripheral circuit should be close to the USIM card socket. The following figure shows the 6-pin SIM card holder reference circuit.

The following figure shows the 6-pin SIM card holder reference circuit.

Figure 20: USIM interface reference circuit

The following figure shows the 8-pin SIM card holder reference circuit.

www.simcom.com

37/70

A7600E-H Hardware Design V1.02

Figure 21:

USIM interface reference circuit (8 PIN)

NOTE

USIM_DATA has been pulled up with a 4.7KΩ resistor to USIM_VDD in module. A 100nF capacitor on

USIM_VDD is used to reduce interference. For more details of AT commands about USIM, please refer to document [1].USIM_CLK is very important signal, the rise time and fall time of USIM_CLK should be less than 40ns, otherwise the USIM card might not be initialized correctly.

3.5.2

Recommend USIM Card Holder

It is recommended to use the 6-pin USIM socket such as C707 10M006 512 produced by Amphenol. User can visit http://www.amphenol.com for more information about the holder.

www.simcom.com

38/70

A7600E-H Hardware Design V1.02

Figure 22: Amphenol C707 10M006 512 USIM card socket

Table 15: Amphenol USIM socket pin description

Pin

Signal

USIM_VDD

USIM_RST

USIM_CLK

GND

VPP

USIM_DATA

Description

USIM Card Power supply.

USIM Card Reset.

USIM Card Clock.

Connect to GND.

USIM Card data I/O.

3.6

PCM Interface

A7600E-H provides a PCM interface for external codec, which can be used in master mode with short sync and 16 bits linear format.

Table 16: PCM parameter list www.simcom.com

39/70

Characteristics

Line Interface Format

Data length

PCM Clock/Sync Source

PCM sampling rate

PCM Sync Format

Data Ordering

Specification

Linear

16bits

Master Mode(Fixed)

16KHz

Short sync(Fixed)

MSB

3.6.1

PCM Sequence

The related PCM timing is shown in the following figure:

A7600E-H Hardware Design V1.02

Figure 23: PCM sequence

3.6.2

PCM Reference Design

PCM recommended circuit is shown as follows: www.simcom.com

40/70

A7600E-H Hardware Design V1.02

Figure 24: PCM reference circuit

3.7

GPIO Interface

A7600E-H module provides 13 GPIOs.

Table 17: Standard GPIO Resources

Pin No.

107

112

117

119

Pin name

GPIO_16

GPIO_03

GPIO_06

GPIO_41

GPIO_63

GPIO_43

GPIO_12

GPIO_02

GPIO_77

GPIO_18

GPIO_01

GPIO_22

GPIO_14

AT command operation

GPIO number

GPIO16

GPIO3

GPIO6

GPIO41

GPIO63

GPIO43

GPIO12

GPIO2

GPIO77

GPIO18

GPIO1

GPIO22

GPIO14

Pin typ.

IO,PU

IO,PD

IO,PU

IO,PD

IO,PU

IO,PD

IO,PU

IO,PD

Power domain

1.8V

Default function

GPIO

GPIO www.simcom.com

Pad Edge wakeup

Yes

41/70

A7600E-H Hardware Design V1.02

3.8

SD Card Interface

A7600E-H provides a 4-bit SD/MMC interface with clock rate up to 200 MHz. It supports up to 32GB SD cards.

Following mode are supported: DS, HS, SDR12, SDR25,SDR50,SDR104,DDR50

Table 18: SD card electrical parameter (SD_DATA0-SD_DATA3, SD_CLK and SD_CMD)

Symbol

1.8V power domain

Parameter

High-level input voltage

Low-level input voltage

High-level output voltage

Low-level output voltage

3V power domain

High-level input voltage

Low-level input voltage

High-level output voltage

Low-level output voltage

Min.

2.7

-0.4

2.7

1.62

-0.4

1.62

Typ.

1.8

Max.

3.3

0.5

3.3

0.5

1.98

0.45

1.98

0.45

Unit

3.8.1 Reference Design for External SD Card

ESD/EMI components should be arranged beside SD card socket. Refer to the following application circuit.

www.simcom.com

Figure 25: SD reference circuit

42/70

A7600E-H Hardware Design V1.02

SD card layout guide lines:

 Protect other sensitive signals/circuits from SD card signals.

 Protect SD card signals from noisy signals (clocks, SMPS, etc.).

 Up to 200 MHz clock rate, 50 Ω nominal, ±10% trace impedance

 CLK to DATA/CMD length matching < 1 mm

 15–24 Ω termination resistor on clock lines near module

 Total routing length < 50 mm recommended

 Routing distance from module clock pin to termination resistor < 5 mm

 Spacing to all other signals = 2x line width

 Bus capacitance < 15 pF

3.9

I2C Bus

The module provides two sets of I2C interfaces, support standard speed clock frequency 100Kbps, support high speed clock frequency 400Kbps, its operation voltage is 1.8V.

Figure 26: I2C reference circuit

NOTE

SCL and SDA have pull-up resistor inside, external resistor is not needed.

3.10

SPI Interface

A7600E-H provides a SPI interface as a master only. Its operation voltage is 1.8V, and its clock rate is up to

26 MHz.

www.simcom.com

43/70

A7600E-H Hardware Design V1.02

3.11

SDIO Interface

A7600E-H provides one SDIO3.0 protocol interface.

Table 19: SDIO interface description

Pin No.

Pin name

SDIO_DATA1

SDIO_DATA2

SDIO_CMD

SDIO_DATA0

SDIO_DATA3

SDIO_CLK

I/O

Power domain

1.8V

Description

SDIO bus data1

SDIO bus data 2

SDIO bus command

SDIO bus data 0

SDIO bus data 3

SDIO bus clock

Remark

Table 20: WIFI Synchronization and control interface (reversed)

Pin No. Pin name

114

115

GPIO_03 DO 1.8V

WLAN_PDN DO 1.8V

WLAN_26M_CLK AO 1.8V

WLAN_CLK_EN DI 1.8V

Remark

WIFI VDD enable(WL_PWR_EN)

WLAN Full Power Down mode

RF858 reserved 26M CLK

RF858 reserved clock enable

If there is no WIFI function requirement, it can be used as

GPIO.

3.12

Network status

The NETLIGHT pin is used to control network status LED, its reference circuit is shown in the following figure.

www.simcom.com

44/70

A7600E-H Hardware Design V1.02

Figure 27: NETLIGHT reference circuit

NOTE

The value of the resistor named ‘R’ depends on the LED characteristic.

The NETLIGHT signal is used to control the LED lights that indicate the status of the network. The working status of this pin is shown in the table below.

Table 21: 2G/3G mode NETLIGHT pin status

NETLIGHT pin status

Always On

200ms ON, 200ms OFF

800ms ON, 800ms OFF

OFF

Module status

Searching Network

Data Transmit

Registered network

Power off / Sleep

Table 22: LTE mode NETLIGHT pin status

NETLIGHT pin status

Always On

200ms ON, 200ms OFF

OFF

Module status

Searching Network

Data Transmit/Registered

Power off / Sleep www.simcom.com

45/70

A7600E-H Hardware Design V1.02

3.13

Flight Mode Control

The FLIGHTMODE pin can be used to control A7600E-H to enter or exit the Flight mode. In Flight mode, the RF circuit is closed to prevent interference with other equipment and minimize current consumption.

Bidirectional ESD protection component is suggested to add on FLIGHTMODE pin, its reference circuit is shown in the following figure.

Figure 28: Flight mode switch reference circuit

Customers can use AT + CFUN command to control the module to enter or exit flight mode.

If the customer does not apply the switch circuit control in the figure above, but uses the MCU to control this pin, it is necessary to pay attention to the level matching. Please refer to the UART circuit section to use the transistor for level shifting.

Table 23: FLIGHTMODE pin control

FLIGHTMODE pin status Module operation

Input Low Level

Input High Level

Flight Mode: RF is closed

AT+CFUN=0: RF is closed

AT+CFUN=1:RF is working

3.14

Other interface

3.14.1

ADC

A7600E-H has 2 dedicated ADC pins named ADC1 and ADC2. They are available for digitizing analog signals such as battery voltage and so on. These electronic specifications are shown in the following table.

www.simcom.com

46/70

A7600E-H Hardware Design V1.02

Table 24: ADC1 and ADC2 electronic characteristics

Characteristics

Resolution

Input Range

Input serial resistance

NOTE

Min.

–

0.1

Typ.

–

Max.

–

1.3

–

Unit bits

MΩ

‘AT+CADC’ and ‘AT+CADC2’ can be used to read the voltage of the ADC1 and ADC2 pins, for more details, please refer to document [1].

3.14.2

LDO

A7600E-H has 2 LDO output, VDD_1V8 and VDD_AUX.

VDD_1V8 is the module's system IO power supply, which can only provide a current capacity of 50mA. It cannot be used as a high current drive source.

VDD_AUX is an output LDO power supply. The output voltage is configurable. The default output voltage is

3 V.

Table 25: VDD_1V8 Electrical characteristics

Symbol

VDD_1V8

NOTE

Description

Output voltage

Output current -

Min.

Typ.

1.8

Max.

Unit

V mA

This power supply is the system power supply. If the damage will affect the system startup, it is recommended that customers add TVS protection. The recommended model is ESD56051N.

Table 26: VDD_AUX Electrical characteristics

Symbol

VDD_AUX

Description

Output voltage

Output current www.simcom.com

Min.

Typ.

Max.

350

Unit

V mA

47/70

A7600E-H Hardware Design V1.02

RF Specifications

4.1

GSM/UMTS/LTE

Table 27: Conducted emission power

Frequency

EGSM900

DCS1800

EGSM900 (8-PSK)

DCS1800 (8-PSK)

WCDMA B1

WCDMA B8

LTE-FDD B1

LTE-FDD B3

LTE-FDD B5

LTE-FDD B7

LTE-FDD B8

LTE-FDD B20

LTE-TDD B38

LTE-TDD B40 power

33dBm ±2dB

30dBm ±2dB

27dBm ±3dB

26dBm +3/-4dB

24dBm +1/-3dB

24dBm + 1/-3dB

23dBm +/-2.7dB

Minimum power

5dBm ± 5dB

0dBm ± 5dB

5dBm ± 5dB

0dBm ±5dB

<-50dBm

<-40dBm

Table 28: Band information 2G/3G

Frequency

EGSM900

DCS1800

WCDMA B1

WCDMA B8

925 ～ 960MHz

1805 ～ 1880 MHz

2110 ～ 2170 MHz

925 ～ 960 MHz

E-UTRA BAND

Table 29: Band information E-UTRA

1920 ~1980 MHz

1710 ~1785 MHz

869 ～ 894 MHz

2110 ~2170 MHz

1805 ~1880 MHz

824 ～ 849 MHz

880 ～ 915 MHz

1710 ～ 1785 MHz

1920 ～ 1980 MHz

880 ～ 915 MHz

Duplex Mode

FDD

FDD www.simcom.com

48/70

2500 ~2570 MHz

880 ~915 MHz

832 ~862 MHz

2570 ~2620 MHz

2300 ~2400 MHz

Table 30: Reception sensitivity conduction

Frequency

EGSM900

DCS1800

WCDMA B1

WCDMA B8

LTE FDD/TDD

Sensitivity(TYP)

< -109dBm

< -110dBm

< -110dBm refer to table 31

2620 ~2690 MHz

925 ~960 MHz

791 ~821 MHz

2570 ~2620 MHz

2300 ~2400 MHz

A7600E-H Hardware Design V1.02

FDD

TDD

Sensitivity(MAX)

3GPP

Table 31: Reference sensitivity (QPSK)

E-UTR

ABAND

40 -

1.4 MHz 3MHz

-101.7

-103.2

-98.7

-100.2

-102.2

-99.2

3GPP standard A7600C

5MHz 10MHz 15 MHz 20 MHz 10 MHz

-100

-97

-98

-97

-100

-97

-94

-95

-94

-97

-95.2

-92.2

-97

-91.2

-95.2

-90

-94

-91

-93.2

-97

-98

-96

-98

-97

-98

Duplex mode

FDD

TDD

NOTE the measured value is the main antennas at 10MHz.

4.2

GSM/ UMTS/LTE Antenna Requirements

Table 32: Recommended antenna Characteristics

Passive Recommended standard www.simcom.com

49/70

operating band

Direction

Gain

Input impedance

Efficiency

Maximum input power

VSWR

Isolation

Antenna route insertion loss (<1GHz)

Antenna route insertion loss

(1710MHz-2170MHz)

Antenna route insertion loss

(2300MHz-2650MHz)

A7600E-H Hardware Design V1.02

refer to band information table omnidirectional

> -3dBi (Avg)

50 ohm

> 50 %

50W

< 2

>20dB

<0.5dB

<0.9dB

<1.2dB

4.3

GSM/ UMTS/LTE Antenna Reference Design

For antenna design, layout between the module and the antenna must be 50 Ω impedance. It is recommended to add RF connector for calibration and test, and add RF matching circuit for antenna tuning.

The recommended circuit is as follows:

Figure 29: MAIN antenna connection circuit

The specific values of R1, C1, C2 and R2 in the matching circuit usually provided by the antenna factory and determined by the antenna optimization. R1 and R2 are pasted 0 Ω by default, C1 and C2 are not pasted by default. D1 is a bidirectional TVS device. The capacitance value is required to be less than 0.2pf

to avoid damage to the internal devices of the module. The recommended TVs models are as follows:

Table 33: TVS recommended part list

Package www.simcom.com

Part number Manufacturer

50/70

0201

0402

CE0201S05G01R

PESD0402-03

A7600E-H Hardware Design V1.02

Kaishuo

PRISEMI www.simcom.com

51/70

A7600E-H Hardware Design V1.02

Electrical Specifications

5.1

Absolute maximum ratings

Absolute maximum rating for digital and analog pins of A7600E-H are listed in the following table.

Table 34: Absolute maximum ratings

Parameter

Voltage at VBAT

Voltage at VBUS

Voltage at digital pins

(SDIO,GPIO,I2C,SPI,UART and PCM)

Voltage at digital pins (USIM,SDC)

Voltage at PWRKEY 、 RESET

Min.

-0.5

-0.3

Typ.

Max.

4.7

5.4

2.1

3.9

4.7

Unit

5.2

Operating conditions

Table 35: Recommended operating ratings

Parameter

Voltage at VBAT

Voltage at VBUS

Min.

3.4

3.0

Table 36: 1.8V Digital I/O characteristics*

Parameter Description

IH High-level input voltage

IL Low-level input voltage

OH High-level output voltage

OL Low-level output voltage

High-level output current(no pull down resistor)

Min.

1.35

-0.3

1.35

Typ.

3.8

5.0

Typ.

1.8

Max.

4.2

5.4

Unit

Max.

2.1

0.45

1.8

0.4

Unit

V mA www.simcom.com

52/70

A7600E-H Hardware Design V1.02

Low-level output current(no pull up resistor)

Input high leakage current (no pull down resistor)

Input low leakage current(no pull up resistor)

-3

-10

-9

NOTE

These parameters are for digital interface pins, such as GPIO, I2C, UART, PCM, SPI, SDIO and

USB_BOOT.

mA uA uA

Table 37: 2.8V Digital I/O characteristics

Parameter Description

IH High-level input voltage

IL Low-level input voltage

OH High-level output voltage

OL Low-level output voltage

High-level output current(no pull down resistor)

Low-level output current(no pull up resistor)

Input high leakage current (no pull down resistor)

Input low leakage current(no pull up resistor)

Min.

2.1

2.5

-2

-10

Typ.

2.8

Max.

3.25

0.7

2.95

0.4

-7

Table 38: Operating temperature

Parameter

Normal operation temperature

Extended operation temperature*

Storage temperature

NOTE

Min.

-30

-40

-45

Typ.

+25

Max.

+80

+85

+90

Unit

℃

The performance will be reduced slightly from the 3GPP specifications if the temperature is outside the normal operating temperature range and still within the extreme operating temperature range.

www.simcom.com

53/70

Unit

V mA mA uA uA

A7600E-H Hardware Design V1.02

5.3

Operating Mode

5.3.1

Operating Mode Definition

The table below summarizes the various operating modes of A7600E-H product.

Table 39: Operating mode Definition

Mode

Normal operation

Flight mode

Power off

GSM/WCDMA / LTE

Sleep

GSM/WCDMA /LTE

Idle

GSM/WCDMA / LTE

Talk

GSM/WCDMA /LTE

Standby

GPRS/EDGE/ LTE

Data transmission

Minimum functionality mode

Function

In this case, the current consumption of module will be reduced to the minimal level and the module can still receive paging message and SMS.

Software is active. Module is registered to the network, and the module is ready to communicate.

Connection between two subscribers is in progress. In this case, the power consumption depends on network settings such as DTX off/on, FR/EFR/HR, hopping sequences, and antenna.

Module is ready for data transmission, but no data is currently sent or received. In this case, power consumption depends on network settings.

There is data transmission in progress. In this case, power consumption is related to network settings (e.g. power control level); uplink/downlink data rates, etc.

AT command ‘AT+CFUN=0’ AT+CSCLK=1 can be used to set the module to a minimum functionality mode without removing the power supply. In this mode, the RF part of the module will not work and the USIM card will not be accessible, but the serial port and USB port are still accessible. The power consumption in this mode is lower than normal mode.

AT command ‘AT+CFUN=4’ or pulling down the FLIGHTMODE pin can be used to set the module to flight mode without removing the power supply. In this mode, the RF part of the module will not work, but the serial port and USB port are still accessible. The power consumption in this mode is lower than normal mode.

Module will go into power off mode by sending the AT command ‘AT+CPOF’ or pull down the PWRKEY pin, normally.

In this mode the power management unit shuts down the power supply, and software is not active. The serial port and USB are not accessible.

www.simcom.com

54/70

A7600E-H Hardware Design V1.02

5.3.2

Sleep mode

In sleep mode, the current consumption of module will be reduced to the minimal level, and module can still receive paging message and SMS.

Several hardware and software conditions must be satisfied together in order to let A7600E-H enter into sleep mode:

 UART condition

 USB condition

 Software condition

5.3.3

Minimum functionality mode and Flight mode

Minimum functionality mode ceases a majority function of module, thus minimizing the power consumption.

This mode is set by the AT command which provides a choice of the functionality levels.

 AT+CFUN=0: Minimum functionality

 AT+CFUN=1: Full functionality (Default)

 AT+CFUN=4: Flight mode

If A7600E-H has been set to minimum functionality mode, the RF function and USIM card function will be closed. In this case, the serial port and USB are still accessible, but RF function and USIM card will be unavailable.

If A7600E-H has been set to flight mode, the RF function will be closed. In this case, the serial port and USB are still accessible, but RF function will be unavailable.

When A7600E-H is in minimum functionality or flight mode, it can return to full functionality by the AT command ’AT+CFUN=1’.

5.4

Current Consumption

The current consumption is listed in the table below.

Table 40: Current consumption on VBAT Pins (VBAT=3.8V)

GSM sleep/idle mode

GSM/GPRS supply current Sleep mode@ BS_PA_MFRMS=2 Typical: 3.5mA

www.simcom.com

55/70

(without USB connection)

UMTS sleep/idle mode

WCDMA supply current

(without USB connection)

LTE sleep/idle mode

LTE supply current

(without USB connection)

GSM Talk

EGSM 900

DCS1800

UMTS Talk

WCDMA B1

WCDMA B8

GPRS data

EGSM 900 ( 1 Rx,4 Tx)

DCS1800 ( 1 Rx,4 Tx)

EGSM 900 ( 3 Rx, 2 Tx)

DCS1800 ( 3 Rx, 2 Tx)

EDGE data

EGSM 900 ( 1 Rx,4 Tx)

DCS1800 ( 1 Rx,4 Tx)

EGSM 900 ( 3 Rx, 2 Tx)

DCS1800 ( 3 Rx, 2 Tx)

HSDPA data

WCDMA B1

WCDMA B8

LTE data

LTE-FDD B1

LTE-FDD B3

LTE-FDD B5

LTE-FDD B7

LTE-FDD B8

LTE-FDD B20

LTE-TDD B38

LTE-TDD B40 www.simcom.com

A7600E-H Hardware Design V1.02

Idle mode@ BS_PA_MFRMS=2 Typical:29mA

Sleep mode@ DRX=9 Typical:: 2.7mA

Idle mode@ DRX=9 Typical:: 30mA

Sleep mode Typical: 3.8mA

Idle mode Typical: 30mA

@power level #5 Typical: 320 mA

@power level #0 Typical: 262 mA

@@Power 24dBm Typical: 540 mA

@Power 24dBm Typical: 585 mA

@power level #5 Typical:630 mA

@power level #0 Typical:395 mA

@power level #5 Typical:370 mA

@power level #0 Typical: 275 mA

@power level #8 Typical:460 mA

@power level #2 Typical: 300 mA

@power level #8 Typical: 336 mA

@power level #2 Typical: 208 mA

@Power 24dBm Typical:487 mA

@Power 24dBm Typical:430 mA

@5M HZ 23.0dBm Typical: 587 mA

@10M HZ 23.0dBm Typical: 595 mA

@5M HZ 23.0dBm Typical: 597 mA

@10M HZ 23.0dBm Typical: 585 mA

@5M HZ 23.0dBm Typical: 550 mA

@10M HZ 23.0dBm Typical: 564 mA

@5M HZ 23.0dBm Typical: 679 mA

@10M HZ 23.0dBm Typical: 702mA

@5M HZ 23.0dBm Typical: 644 mA

@10M HZ 23.0dBm Typical: 646mA

@5M HZ 23.0dBm Typical: 650 mA

@10M HZ 23.0dBm Typical: 656mA

@5M HZ 23.0dBm Typical: 396 mA

@10M HZ 23.0dBm Typical: 405 mA

@5MHZ 23.0dBm Typical: 368 mA

@10MHZ 23.0dBm Typical: 372 mA

56/70

A7600E-H Hardware Design V1.02

5.5

ESD Notes

A7600E-H is sensitive to ESD in the process of storage, transporting, and assembling. When A7600E-H is mounted on the users’ mother board, the ESD components should be placed beside the connectors which human body mayn’t touch, such as USIM card holder, audio jacks, switches, keys, etc. The following table shows the A7600E-H ESD measurement performance without any external ESD component.

Table 41: The ESD performance measurement table (Temperature: 25 ℃ , Humidity: 45%.)

Part

VBAT,GND

Antenna port

USB

UART

Other PADs

Contact discharge

+/-5K

+/-4K

+/-3K

Air discharge

+/-10K

+/-8K

+/-6K

+/-6K www.simcom.com

57/70

A7600E-H Hardware Design V1.02

SMT Production Guide

6.1

Top and Bottom View of A7600E-H

Figure 30: Top and bottom view of A7600E-H

NOTE

The above is the design effect diagram of the module for reference. The actual appearance is subject to the actual product.

www.simcom.com

58/70

6.2

Label Information

A7600E-H Hardware Design V1.02

Figure 31: Label information

Table 42: The description of label information

No.

Description

1 pin mark

P/N code

Project name

Product code

Serial number

International mobile equipment identity www.simcom.com

59/70

6.3

Typical SMT Reflow Profile

A7600E-H Hardware Design V1.02

Figure 32: The ramp-soak-spike reflow profile of A7600E-H

NOTE

For more details about secondary SMT, please refer to the document [21].

6.4

Moisture Sensitivity Level (MSL)

A7600E-H is qualified to Moisture Sensitivity Level (MSL) 3 in accordance with JEDEC J-STD-033. If the prescribed time limit is exceeded, users should bake modules for 192 hours in drying equipment (<5% RH) at 40+5/-0°C, or 72 hours at 85+5/-5°C. Note that plastic tray is not heat-resistant, and only can be baked at

45° C.

Table 43: Moisture Sensitivity Level and Floor Life

Moisture Sensitivity

Level (MSL)

Floor Life (out of bag) at factory ambient≤30°C/60% RH or as stated

Unlimited at ≦ 30 ℃ /85% RH

1 year

4 weeks

168 hours www.simcom.com

60/70

A7600E-H Hardware Design V1.02

72 hours

48 hours

24 hours

Mandatory bake before use. After bake, it must be reflowed within the time limit specified on the label.

NOTE

IPC / JEDEC J-STD-033 standard must be followed for production and storage.

www.simcom.com

61/70

Packaging

A7600E-H support tray packaging.

A7600E-H Hardware Design V1.02

Module tray drawing ：

Figure 33: packaging diagram www.simcom.com

Figure 34: Tray drawing

62/70

Table 44: Tray size

Length （ ±3mm ）

242.0

Small carton drawing ：

Width （ ±3mm ）

161.0

A7600E-H Hardware Design V1.02

number

Figure 35: Small carton drawing

Table 45: Small Carton size

Length （ ±10mm ） Width （ ±10mm ）

270 180

Big carton drawing ：

Height （ ±10mm ） number

120 15*20=300 www.simcom.com

Figure 36: Big carton drawing

63/70

A7600E-H Hardware Design V1.02

Table 46: Big Carton size

Length （ ±10mm ）

380

Width （ ±10mm ） Height （ ±10mm ）

280 280 number

300*4=1200 www.simcom.com

64/70

A7600E-H Hardware Design V1.02

Appendix

8.1

Coding Schemes and Maximum Net Data Rates over Air Interface

Table 47: Coding Schemes and Maximum Net Data Rates over Air Interface

Multislot definition(GPRS/EDGE)

Slot class DL slot number UL slot number Active slot number

GPRS coding scheme

CS 1 = 9.05 kb/s / time slot

CS 2 = 13.4 kb/s / time slot

CS 3 = 15.6 kb/s / time slot

CS 4 = 21.4 kb/s / time slot

Max data rata （ 4 slots ）

36.2 kb/s

53.6 kb/s

62.4 kb/s

85.6 kb/s

Modulation type

GMSK

EDGE coding scheme

MCS 1 = 8.8 kb/s/ time slot

MCS 2 = 11.2 kb/s/ time slot

MCS 3 = 14.8 kb/s/ time slot

MCS 4 = 17.6 kb/s/ time slot

MCS 5 = 22.4 kb/s/ time slot

MCS 6 = 29.6 kb/s/ time slot

MCS 7 = 44.8 kb/s/ time slot

MCS 8 = 54.4 kb/s/ time slot

MCS 9 = 59.2 kb/s/ time slot

HSDPA device category

Max data rata （ 4 slots ）

35.2 kb/s

44.8 kb/s

59.2 kb/s

70.4 kb/s

89.6 kb/s

118.4 kb/s

179.2 kb/s

217.6 kb/s

236.8 kb/s

Max data rate(peak)

Modulation type

GMSK

8PSK

Modulation type www.simcom.com

65/70

Category 1

Category 2

Category 3

Category 4

Category 5

Category 6

Category 7

Category 8

Category 9

Category 10

Category 11

Category 12

Category 13

Category 14

Category 15

Category 16

Category 17

Category 18

Category 19

Category 20

Category 21

Category 22

Category 23

Category 24

HSUPA device category

Category 1

Category 2

Category 3

Category 4

Category 5

Category 6

LTE-FDD device category

(Uplink)

Category 1

Category 2

Category 3

Category 4

1.2Mbps

1.8Mbps

3.6Mbps

7.2Mbps

10.2Mbps

14.4Mbps

0.9Mbps

1.8Mbps

17.6Mbps

21.1Mbps

23.4Mbps

28Mbps

23.4Mbps

28Mbps

35.5Mbps

42Mbps

23.4Mbps

28Mbps

35.5Mbps

42.2Mbps

Max data rate(peak)

0.96Mbps

1.92Mbps

3.84Mbps

5.76Mbps

Max data rate （ peak ）

5Mbps

25Mbps

50Mbps

A7600E-H Hardware Design V1.02

16QAM,QPSK

64QAM

16QAM

64QAM

16QAM,QPSK

QPSK

64QAM

16QAM

64QAM

Modulation type

QPSK

Modulation type

QPSK/16QAM

QPSK/16QAM www.simcom.com

66/70

A7600E-H Hardware Design V1.02

8.2

Terms and Abbreviations

Table 49: Terms and Abbreviations

Abbreviation Description

ADC Analog-to-Digital Converter

AMR

CSD

CTS

DTE

DTR

DTX

EFR

EGSM

ESD

ETS

GPRS

Adaptive Multi-Rate

Coding Scheme

Circuit Switched Data

Clear to Send

Data Terminal Equipment (typically computer, terminal, printer)

Data Terminal Ready

Discontinuous Transmission

Enhanced Full Rate

Enhanced GSM

Electrostatic Discharge

European Telecommunication Standard

Full Rate

General Packet Radio Service www.simcom.com

68/70

A7600E-H Hardware Design V1.02

SIM

SMS

UART

URC

PCB

PCL

PCS

PDU

PPP

RMS

RTC

GSM

IMEI

Li-ion

PAP

PBCCH

Global Standard for Mobile Communications

Half Rate

International Mobile Equipment Identity

Lithium-Ion

Mobile Originated

Mobile Station (GSM engine), also referred to as TE

Mobile Terminated

Password Authentication Protocol

Packet Broadcast Control Channel

Printed Circuit Board

Power Control Level

Personal Communication System, also referred to as GSM 1900

Protocol Data Unit

Point-to-point protocol

Radio Frequency

Root Mean Square (value)

Real Time Clock

Receive Direction

Subscriber Identification Module

Short Message Service

Terminal Equipment, also referred to as DTE

Transmit Direction

Universal Asynchronous Receiver & Transmitter

Unsolicited Result Code

USSD

PB abbreviation

Unstructured Supplementary Service Data

SIM fix dialing phonebook

SIM last dialing phonebook (list of numbers most recently dialed)

Mobile Equipment list of unanswered MT calls (missed calls)

SIM (or ME) own numbers (MSISDNs) list

Mobile Equipment list of received calls

SIM phonebook

Not connect

8.4

Safety Caution

Table 50: Safety Caution www.simcom.com

69/70

Marks

A7600E-H Hardware Design V1.02

Requirements

When in a hospital or other health care facility, observe the restrictions about the use of mobiles. Switch the cellular terminal or mobile off, medical equipment may be sensitive and not operate normally due to RF energy interference.

Switch off the cellular terminal or mobile before boarding an aircraft. Make sure it is switched off. The operation of wireless appliances in an aircraft is forbidden to prevent interference with communication systems. Forgetting to think much of these instructions may impact the flight safety, or offend local legal action, or both.

Do not operate the cellular terminal or mobile in the presence of flammable gases or fumes. Switch off the cellular terminal when you are near petrol stations, fuel depots, chemical plants or where blasting operations are in progress. Operation of any electrical equipment in potentially explosive atmospheres can constitute a safety hazard.

Your cellular terminal or mobile receives and transmits radio frequency energy while switched on. RF interference can occur if it is used close to TV sets, radios, computers or other electric equipment.

Road safety comes first! Do not use a hand-held cellular terminal or mobile when driving a vehicle, unless it is securely mounted in a holder for hands free operation.

Before making a call with a hand-held terminal or mobile, park the vehicle.

GSM cellular terminals or mobiles operate over radio frequency signals and cellular networks and cannot be guaranteed to connect in all conditions, especially with a mobile fee or an invalid SIM card. While you are in this condition and need emergent help, please remember to use emergency calls. In order to make or receive calls, the cellular terminal or mobile must be switched on and in a service area with adequate cellular signal strength.

Some networks do not allow for emergency call if certain network services or phone features are in use (e.g. lock functions, fixed dialing etc.). You may have to deactivate those features before you can make an emergency call.

Also, some networks require that a valid SIM card be properly inserted in the cellular terminal or mobile.

www.simcom.com

70/70

Download

Bare en venlig påmindelse. Du kan se dokumentet lige her. Men vigtigst af alt har vores AI allerede læst det. Den kan forklare komplekse ting i enkle vendinger, besvare dine spørgsmål på ethvert sprog og hjælpe dig med hurtigt at navigere selv de længste eller mest komplicerede dokumenter.

Nej, vil stadig selv slå det op

Hej! Jeg er en AI-chatbot, der er specielt trænet til at hjælpe dig med SIMCom A7600E-H Hardware Design. Jeg har grundigt gennemgået dokumentet og kan hjælpe dig med at finde den nøjagtige information, du har brug for, eller forklare indholdet på en klar og simpel måde. Uanset om du leder efter vejledning om specifikke funktioner, fejlfindingstrin eller generel brug, er du velkommen til at stille dine spørgsmål. Jo flere detaljer du giver om dine bekymringer eller behov, jo mere præcist og effektivt kan jeg hjælpe dig!