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General Description
Figure 1:
Added Value of Using AS6200
Benefits
•
High Measurement Accuracy
•
Low Power Consumption
•
Supply Voltage Range
•
Wide Operating Temperature
•
Small PCB Footprint
AS6200
Temperature Sensor
The AS6200 IC is a high accuracy temperature sensor system that communicates via a 2 wire digital bus with other devices.
It consists of a Si bandgap temperature sensor, an ADC and a digital signal processor.
It has a very high temperature accuracy (±0.4°C for AS6200) and an ultra-low power consumption (low operation and quiescent current) which makes it ideally suited for mobile/battery powered applications.
The AS6200 is an easy to integrate and use solution, featuring an factory calibrated sensor, integrated linearization and the possibility to use 2 different I²C addresses, enabling to use two
AS6200 devices on one bus.
Additionally the AS6200 temperature sensor system also features an alert functionality, which triggers e.g. an interrupt to protect devices from excessive temperatures.
and
Content Guide appear at end of
datasheet.
Key Benefits & Features
The benefits and features of AS6200, Temperature Sensor are listed below:
Features
•
± 0.4°C (0°C to 65°C)
•
± 1°C (-40°C to 125°C)
(max. values)
•
6μA @Operation (typ. @4Hz)
•
0.1μA @Standby (typ.)
•
1.8V to 3.6V (0°C to 125°C)
•
-40°C to 125°C
•
1.5mm x 1.0mm (WLCSP)
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[v1-05] 2020-Mar-12
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AS6200 −
General Description
Applications
•
HVAC and thermostat controls
•
Medical instrumentation
• Body temperature measurement
•
Mobile devices
• Thermal monitoring for smartphones, tablets and cameras
• Smart watches and wearables
•
Industrial
• Industrial automation
• Cold chain monitoring
Figure 2:
Typical Application Environment of the AS6200 Temperature Sensor
VDD
Microcontroller
(Bus Master)
R
PU
Pull-up resistors
VDD
10nF
SDA
VDD
ADD0
Slave
SCL
VSS
ALERT
Address Select
In
a typical application of the AS6200 is shown. It is connected via a serial bus (I²C) with a microcontroller.
The sensor system is also connected to the microcontroller via the “Alert” pin which can be used to trigger events in case the temperature exceeds defined limits.
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AS6200 −
General Description
Figure 3:
Functional Blocks of the AS6200
Block Diagram
The functional blocks of this device are shown below:
VDD
GND
Temperature
Sensor Analog
Frontend
A/D Converter
AS6200
Digital Signal
Processing
Oscillator
Registers
Control Logic
I 2 C Interface
Alert
ADD0
SCL
SDA
In Figure 3 all relevant blocks of the AS6200 temperature sensor
are shown. The sensing element is a Si bipolar transistor.
The analog signal is transformed by the A/D converter in a digital signal which is processed by the DSP and written into the registers.
The data in the register can be accessed by the serial bus (I²C).
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Pin Assignments
AS6200 −
Pin Assignments
Figure 4:
Pin Assignment WLCSP (Top View)
A
B
1
A1
ALERT
Columns
2
A2
VSS
3
A3
SCL
B1
ADD0
B2
VDD
B3
SDA
Top View
In
the pin assignment of the WLCSP package is shown.
A1 pin assignment is shown via a marking on the package (top side).
Figure 5:
Pin Description
Pin number
(WLCSP)
A1
A2
A3
B1
B2
B3
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Pin Name
ALERT
VSS
SCL
ADD0
VDD
SDA
Description
Alert Output (interrupt)
Ground Pin
Serial Interface Clock
Address Select Pin
Positive Supply Voltage
Serial Interface Data
In
the pins of the device are described. For the pins
“Alert”, “SDA” and “SCL” external pull up resistors are necessary.
The pin ADD0 needs to be connected and cannot be left unconnected (please refer to the bus address sections for more information).
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AS6200 −
Absolute Maximum Ratings
Absolute Maximum Ratings
Stresses beyond those listed under
may cause permanent damage to the device. These are stress ratings only. Functional operation of the device at these or any other conditions beyond those indicated under
is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
Figure 6:
Absolute Maximum Ratings
Symbol
V
DD
/V
SS
I
SCR
ESD
HBM
T
A
T
J
T
STRG
Parameter Min Max Units Comments
Electrical Parameters
Supply Voltage to
Ground
Input Current (latch-up immunity)
-0.3
-100
4
100
V mA JEDEC JESD78D
Electrostatic Discharge
Electrostatic Discharge
HBM
±2 kV MIL-STD-833J-3015.9
Temperature Ranges and Storage Conditions
Operating Temperature -40 125 °C
Junction Temperature
Storage Temperature
Range
-55
125
125
°C
°C
T
BODY
Package Body
Temperature
260 °C
IPC/JEDEC J-STD-020
The reflow peak soldering temperature (body temperature) is specified according to IPC/JEDEC
J-STD-020 “Moisture/Reflow
Sensitivity Classification for
Non-hermetic Solid State Surface
Mount Devices.”
RH
NC
MSL
Relative Humidity non-condensing
Moisture Sensitivity
Level
5
1
85 %
Maximum floor life time is unlimited
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AS6200 −
Electrical Characteristics
Electrical Characteristics
Operating Conditions
Figure 7:
Operating Conditions
Symbol
VDD
T_AMB
Parameter
DC supply voltage
Ambient temperate
Min Typ
3.0
1.8
-40
Max
3.6
125
Units
V
°C
Note
Reference to VSS
Analog System Parameters
Figure 8:
Analog System Parameters
Symbol
VDD
T
IDD
IDD
T_ERR
N
TS
NS
Parameter
Supply voltage
Temperature range
Standby consumption
Current consumption
(4 conversions/s)
Resolution
Conversion time
Conversion rate
Min
1.8
2.0
-40
-0.4
-1
24
TRise_VDD Supply voltage rise time
SR_VDD Supply voltage slew rate 50
12
34
0.25
1
4
8
Typ
3.0
3.0
0.1
0.3
6
46
0.35
1.35
5.5
10.7
20
Max
3.6
3.6
125
0.4
9.0
7
16
0.4
1
Unit Note
V
T = 0°C to 125°C
T = -40°C to 125°C
°C
μA
μA
°C
T= -40°C to 65°C
T= 65°C to 125°C
T = -40°C to 65°C
Serial bus inactive
T = 65°C to 125°C
Serial bus inactive
T = 0°C to 65°C
T = -40°C to 125°C bit ms
Conv/s
CR[1:0]=00
CR[1:0]=01
CR[1:0]=10
CR[1:0]=11 ms 0.1V to 1.6V
mV/ms 0.1V to 1.6V
Note(s):
1. The accuracy is based on measurements and reflects 4,5 σ statistics.
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AS6200 −
Detailed Descriptions
Detailed Descriptions
Figure 9:
Register Map with Serial Interface
The AS6200 is a complete sensor system that has an integrated temperature sensing element, the analog frontend, the A/D converter and the digital signal processing part.
The digital signal processing part consists of the signal processor, the registers and the serial bus interface.
For block diagram please refer to
.
In
an overview of the analog system parameters is given.
The current consumption with fewer conversions per second is lower than the values mentioned in
Digital System Parameters
The device contains the following data registers as depicted in the following figure:
0x0
0x1
0x2
0x3
TVAL (Read Only)
CONFIG (Read/Write)
TLOW (Read/Write)
THIGH (Read/Write)
INDEX (Read/Write)
Serial Interface
SCLK
SDA
With the use of the index register, it is possible to address the specific data register. The index register is an 8-bit register, where only bits 0 and 1 are used as shown in
and all other bits are set to 0 and read only.
Figure 10:
Index Register
Bit
Value
D7
0
D6
0
D5
0
D4
0
D3
0
D2
0
D1 D0
Address Bits
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Detailed Descriptions
The two-bit address selects the register to be accessed by the serial interface as shown in the following table.
Figure 11:
Register Map
Address
0x0
0x1
0x2
0x3
Symbol
TVAL
CONFIG
TLOW
THIGH
Register
Temperature Register
Configuration Register
T
LOW
Register
T
HIGH
Register
Description
Contains the temperature value
Configuration settings of the temperature sensor
Low temperature threshold value
High temperature threshold value
This means that in order to access the different registers, the index register must be set accordingly. With the exception of the TVAL register (which contains the temperature value data), all registers are read/write accessible.
Configuration Register
The configuration register is a 16-bit register which defines the operation modes of the device. Any read/write operations processes the MSB byte first.
Figure 12:
Configuration Register
Bit
R/W
Bit
Default
RW
SS
0
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
RO
Reserved
1 0
CF
0 0
MSB Byte
RW
POL IM SM
0 0 0 1
CR
0
RO RW
AL
1 0 0
LSB Byte
RO
Reserved
0 0 0
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In
the configuration register is shown. The bits D0-3 and D13-14 are not to be used and are set to read only. The bit
D4 is RW and must not be changed from the default value. The explanation of the other bits are detailed in the following sections.
Alert, Bit D5
The alert bit can be used to easily compare the current temperature reading to the thresholds that can be set in the
TLOW and THIGH registers.
If the polarity bit is set to 0, the AL bit is read as 1 until the converted temperature value exceeds the defined value in the high temperature threshold register THIGH for the number of defined consecutive faults (bits CF). Such an event causes the
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AS6200 −
Detailed Descriptions
AL bit to toggle to 0 and the value is kept until the converted temperature value falls below the defined value in the low temperature threshold register TLOW for the number of defined consecutive faults. If this condition is met, the AL bit is reset to 1.
The polarity bit (POL) defines the active state of the alert bit as depicted in the following figure.
The alert bit has the same setting as the alert output as long as the device is configured for the comparator mode.
Figure 13:
State Diagram of the Alert Bit
POL = 0:
AL = 1
T < TLOW for N consecutive cycles
AL = 0
T > THIGH for N consecutive cycles
T < TLOW for N consecutive cycles
POL = 1:
AL = 0
AL = 1
T > THIGH for N consecutive cycles
Conversion Rate, Bit D6-D7
The conversion rate bits define the number of executed temperature conversions per time unit. Additional readouts of the temperature register between conversion is possible but not recommended because the value is changed only after a conversion is finished.
Values of 125ms, 250ms, 1s and 4s per conversion can be configured while the default rate is set to 250ms. This corresponds to a value of 4 conversions per second.
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Detailed Descriptions
The following table summarizes the different configuration settings:
Figure 14:
Conversion Rate Configuration
CR Bits
Conversion Rate
D7
1
1
0
0
D6
0
1
0
1
0.25 /s
1 /s
4 /s
8 /s
The device immediately starts a conversion after a power-on sequence and provides the first result after typ. 34ms (max.
46ms). A higher power consumption occurs during the actual conversion while the device stays in the standby mode after a finished conversion until the next conversion is activated as shown in the following figure.
Figure 15:
Conversion Sequence
Powerup
Standby
Active
Standby
TS
Conversion Rate
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Sleep Mode, Bit D8
The sleep mode is activated by setting the bit SM in the configuration register to 1. This shuts the device down immediately and reduces the power consumption to a minimum value.
Entering the sleep mode will take some time (120ms maximum) and the first conversion after the sleep mode has been entered takes longer than the values specified in
recommended when entering sleep mode to trigger a single shot conversion at the same time. After 150ms, the device has then entered the sleep mode and subsequent conversion times are as specified in
The serial interface is the only active circuitry in the sleep mode in order to provide access to the digital registers.
After resetting the SM bit to 0, the device enters the continuous conversion mode.
Figure 16:
Sleep Mode Configuration
SM Bit
0
1
Operation Mode
Continuous Conversion Mode
Sleep Mode
Interrupt Mode, Bit D9
The interrupt mode bit defines whether the device operates in the temperature comparator mode or interrupt mode. This defines the operation mode of the ALERT output as described in the polarity bit section.
Figure 17:
Interrupt Mode Configuration
IM Bit
0
1
Operation Mode
Comparator Mode
Interrupt Mode
The comparator mode is characterized that if the temperature value exceeds the THIGH value, the alert output is changed (e.g. from high to low if the polarity bit is set to 0 and vice versa).
The alert output stays in that condition until the measured temperature drops below the defined TLOW value.
The interrupt mode is characterized that it changes the alert output as soon as the measured temperature crosses the THIGH or TLOW value threshold.
The alert bit has the same setting as the alert output if the device is set to comparator mode.
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Detailed Descriptions
Figure 18:
ALERT Output Functionality
Converted Temperature
(TVAL)
THIGH
TLOW
ALERT
IM=0, POL=0
H
L
ALERT
IM=1, POL=0
H
L
ALERT
IM=0, POL=1
H
L
ALERT
IM=1, POL=1
H
L
T
HIGH
T
LOW t
Read Read Read
Polarity, Bit D10
The polarity bit configures the polarity of the ALERT output. If the polarity bit is cleared, the ALERT output is low active while it becomes high active if the polarity bit is set to ‘1’.
Figure 19:
Polarity Bit Configuration
POL Bit
0
1
ALERT Output
Active low
Active high
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Detailed Descriptions
Consecutive Faults, Bits D11-D12
A fault condition persists if the measured temperature either exceeds the configured value in register THIGH or falls below the defined value in register TLOW. As a result, the ALERT pin indicates the fault condition if a defined number of consecutive temperature readings meets this fault condition. The number of consecutive faults are defined with two bits (D12 and D11) and prevent a false alert if environmental temperature noise is present. The register configuration is shown in the following table.
Figure 20:
Consecutive Faults Bit Settings
D12
1
1
0
0
CF Bits
D11
0
1
0
1
Consecutive Faults (N)
4
6
1
2
Single Shot Conversion, Bit D15
The device features a single shot measurement mode if the device is in sleep mode (SM=1). By setting the “Single Shot-bit” to 1, a single temperature conversion is started and the SS-bit can be read as 1 during the active conversion operation. Once the conversion is completed, the device enters the sleep mode again and the SS-bit is set to 0. The single shot conversion allows very low power consumption since a temperature conversion is executed on demand only. This allows a user defined timing of the temperature conversions to be executed and is used if the consecutive operation mode is not required.
The first conversion triggered in this mode has a longer conversion time. In the section
detailed together with the recommendation to trigger the first conversion simultaneously with entering the sleep mode.
As the device exhibits a very short conversion time, the effective conversion rate can be increased by setting the single shot bit repetitively after a conversion has finished. However, it has to be ensured that the additional power is limited, otherwise self-heating effects have to be considered.
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Detailed Descriptions
Figure 21:
Single Shot Conversion Bit Settings
SS Bit
0
1
Conversion
No conversion ongoing/conversion finished
Start Single Shot conversion/conversion ongoing
High- and Low-Limit Registers
If the comparator mode is configured (IM=0), the ALERT output becomes active if the temperature equals or exceeds the defined value in register THIGH for the configured number of consecutive faults (N). This configuration is defined by the field
CF in the configuration register. The ALERT output remains assigned until the converted temperature value equals or falls below the defined value in register TLOW for the same number of consecutive fault cycles.
If the interrupt mode is configured (IM=1), the ALERT output becomes active if the temperature equals or exceeds the defined value in register THIGH for the configured number of consecutive fault cycles. It remains active until a read operation is executed on any register. The ALERT output is also cleared if the device is set into sleep mode by setting bit SM in the configuration register.
Once the ALERT output is cleared, it is activated again only if the temperature value falls below the configured value in register TLOW. It remains active unless a read operation has taken place.
This sequence is repeated unless the device is set into the comparator mode or reset by the General Call Reset command.
This reset command clears the interrupt mode bit and consequently puts the device into the comparator mode.
The sequential behavior is summarized in the following figure.
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Detailed Descriptions
Figure 22:
ALERT Operation Modes
Comparator Mode
ALERT output cleared
T ≤ TLOW for
N consecutive cycles
T ≥ THIGH for
N consecutive cycles
ALERT output active
General Reset
Command
IM=0 IM=1
Read operation or
Set to sleep mode
ALERT output active
Interrupt Mode
ALERT output cleared
T ≥ THIGH for
N consecutive cycles
ALERT output active
T ≤ TLOW for
N consecutive cycles
ALERT output cleared
Read operation or
Set to sleep mode
The following table defines the content of the registers TLOW and THIGH. For data transmission, the MSB byte is transmitted first, followed by the LSB byte. The data format for representing the threshold temperatures is equal to the temperature register
(TVAL). After a power-up, the registers are initialized with the following default values:
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Figure 23:
Default Values for THIGH and TLOW
Register Temperature
TLOW
THIGH
75°C
80°C
Binary Value (12-Bit)
L11..L0 = 0100 1011 0000
H11..H0 = 0101 0000 0000
The following table defines the register bits of the THIGH and
TLOW register.
Figure 24:
Register Bit Settings for THIGH/TLOW
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
H11 H10 H9 H6 0 0 0 H8 H7
MSB Byte
H5 H4 H3 H2 H1 H0 0
LSB Byte
Temperature Register
The temperature register contains the digitally converted temperature value and can be read by setting the index pointer to the TVAL register (0x0).
Figure 25:
Temperature Value Register
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
T11 T10 T9 T6 T5 T4 T3 T2 T1 0 0 0 T8 T7
MSB Byte
T0 0
LSB Byte
Two consecutive bytes must be read to obtain the complete temperature value. The MSB byte (Bits D15…D8) is transmitted upon the first read access and the LSB byte (Bits D7…D0) is transmitted after the second read access. The least significant bits D3…D0 are set to 0.
A temperature value is represented as a two complement value in order to cover also negative values. After power-up, the temperature value is read as 0°C until the first conversion has been completed. One LSB corresponds to 0.0625°C.
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The binary values can be calculated according to the following formulas:
Positive values:
|Value| / LSB
Negative values:
Complement( |Value| / LSB ) + 1
Example 75°C:
75ºC / 0.0625ºC = 1200 = Binary 0100 1011 0000 = Hex 4B0
Example -40°C:
|-40ºC| / 0.0625ºC + 1 = 640 + 1 = Binary 0010 1000 0000 + 1 =
1101 0111 1111 + 1 = 1101 1000 0000 = Hex D80
Figure 26:
Temperature Conversion Examples
Temperature (°C)
100.0
75.0
50.0
25.0
0.125
0.0625
0.0
-0.0625
-0.125
-25.0
-40.0
Digital Output (Binary)
0110 0100 0000
0100 1011 0000
0011 0010 0000
0001 1001 0000
0000 0000 0010
0000 0000 0001
0000 0000 0000
1111 1111 1111
1111 1111 1110
1110 0111 0000
1101 1000 0000
Digital Output (Hex)
FFE
E70
D80
002
001
000
FFF
640
4B0
320
190
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Detailed Descriptions
Serial Interface
The device employs a standard I²C-Interface.
Bus Description
A data transfer must be invoked by a master device (e.g. microcontroller) which defines the access to the slave device.
The master device defines and generates the serial clock (SCL) and the start/stop conditions.
In order to address a specific device, a START condition has to be generated by the master device by pulling the data line (SDA) from a logic high level to a logic low level while the serial clock signal (SCL) is kept at high level.
After the start condition, the slave address byte is transmitted which is completed with a ninth bit which indicates a read
(bit=’1’) or a write operation (bit=’0’) respectively. All slaves read the data on the rising edge of the clock. An acknowledge signal is generated by the addressed slave during the ninth clock pulse. This acknowledge signal is produced by pulling the pin SDA to a low level by the selected slave.
Subsequently, the byte data transfer is started and finished by an acknowledge bit. A change in the data signal (SDA) while the clock signal (SCL) is high causes a START or STOP condition.
Hence, it must be ensured such a condition is prevented during a data transfer phase.
After completing the data transfer, the master generates a STOP condition by pulling the data line (SDA) from low level to high level while the clock signal (SCL) is kept at high level.
Data Interface
A bus connection is created by connecting the open drain input/output lines SDA and SCL to the two wire bus. The inputs of SDA and SCL feature Schmitt-trigger inputs as well as low pass filters in order to suppress noise on the bus line. This improves the robustness against spikes on the two wire interface.
Both fast transmission mode (1kHz to 400kHz) and high-speed transmission mode (1kHz to 3.4MHz) are employed to cover different bus speed settings.
Any data transfer transmits the MSB first and the LSB as last bit.
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Bus Address
A slave address consists of seven bits, followed by a data direction bit (read/write operation). The slave address can be selected from a pool of two different address settings by connecting the input pin ADD0 to an appropriate signal as summarized in the following table.
The ADD0 must not be left unconnected.
Figure 27:
I²C Address Select Configuration
ADD0 Connection
VSS
VDD
Device Address (bin)
100 1000
100 1001
Device Address (hex)
0x48
0x49
Read/Write Operation
In order to access an internal data register, the index register must be written in advance. This register contains the actual register address and selects the appropriate register for an access. A typical transfer consists of the transmission of the slave address with a write operation indication, followed by the transmission of the register address and is finalized with the actual register content data transfer. This implies that every write operation to the temperature sensor device requires a value for the index register prior to the transmission of the actual register data.
The index register defines the register address for both the write and read operation. Consequently, if a read operation is executed, the register address is taken from the index register which was defined from the last write operation.
If a different register needs to be read, the index register has to be written in advance to define the new register address. This is accomplished by transmitting the slave address with a low
R/W bit, followed by the new content of the index register.
Subsequently, the master provokes a START condition on the bus and transmits the slave address with a high R/W bit in order to initiate a read operation.
Since the index register always keeps its last value, reads can be executed repetitively on the same register.
Similarly to the byte transfer where the MSB is transmitted first, the transfer of a 16-bit word is executed by a two byte transfer whereas the MSB byte is always transmitted first.
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Detailed Descriptions
Slave Operation
The device employs a slave functionality only (slave transmitter and slave receiver) and cannot be operated as a bus master.
Consequently, the device never actively drives the SCL line.
Slave Receiver Mode
Any transmission is invoked by the master device by transmitting the slave address with a low R/W bit. Subsequently, the slave device acknowledges the reception of the valid address by pulling the ninth bit to a low level. Following to acknowledge, the master transmits the content of the index register. This transfer is again acknowledged by the slave device. The next data byte(s) are written to the actual data register which is selected by the index register while each transfer is acknowledged upon a completed transfer by the slave device. A data transfer can be finished if the master transmits a START or a STOP condition on the bus.
Slave Transmitter Mode
The master transmits the slave address with a high R/W bit. In turn, the slave acknowledges a valid slave address.
Subsequently, the slave transmits the MSB byte of the actual selected data register by the index register. After the MSB byte transmission, acknowledge is sent by the master. Afterwards, the LSB byte is transmitted by the slave which is also acknowledged by the master after the completed transmission.
The data transfer can be terminated by the master by transmitting a Not-Acknowledge after the transmitted slave data or by invoking a START or a STOP condition on the bus.
Alert Function
If the device is configured for an interrupt mode operation
(IM=1), the ALERT output can be used as an alert signal.
If the polarity bit is set to ‘0’ (POL=’0’), the alert condition bit is set to ‘0’ in case the temperature has exceeded the configured value in register THIGH. Accordingly, the alert condition bit is set to ‘1’ if the temperature has fallen below the configured value in register TLOW.
If the polarity bit is set to ‘1’ (POL=’1’), the alert condition bit is inverted. The following table summarizes the status of the alert condition bit with different alert conditions and polarity configurations.
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Detailed Descriptions
Figure 28:
Alert Condition Bit
POL
1
1
0
0
Alert Condition
T
≥
THIGH
T ≤ TLOW
T
≥
THIGH
T ≤ TLOW
Alert Condition Bit
(AC-Bit)
1
0
0
1
High Speed Mode
The bus operation is limited to 400kHz unless a high speed command is issued by the master device as the first byte after a START condition. This switches the bus to a high speed operation which allows data transfer frequencies up to 3.4MHz.
Such a command is not acknowledged by the slave but the input filter time constants on the serial interface (SDA and SCL) are adapted to allow the higher transfer rate.
After a high speed command, the slave address is transmitted by the master in order to invoke a data transfer. The bus keeps operating at the higher operating frequency until the master issues a STOP condition on the serial bus. Upon the reception of the STOP condition by the slave, the input filters are switched to their initial time constants which allow lower transfer rates only.
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AS6200 −
Detailed Descriptions
Summary of Bus Commands
Figure 29:
Summary of Bus Commands
Command
High Speed Command
Address Data Value
0000 1xxx
General Call
A general call is issued by the master by transmitting the general call address (000 0000) with a low R/W bit. When this command is issued on the bus, the device acknowledges this command. The device also acknowledges the second byte but ignores the data. Subsequent bytes sent by the master during the general call are not acknowledged.
Start Byte
When the master transmits address 000 0000 and a high R/W bit (“START byte”) the device acknowledges the address. The device then sends the MSB data byte and LSB data byte, where the data corresponds to the content of the register whose address has been last written to. After reset this corresponds to the temperature register.
Timeout Function
The serial interface of the slave device is reset if the clock signal
SCL is kept low for typ. 30ms. Such a condition results in a release of the data line by the slave in case it has been pulled to low level. The slave remains inactive after a timeout and waits for a new START command invoked by the bus master. In order to prevent a timeout, the bus transfer rate must be higher than
1kHz.
ams Datasheet
[v1-05] 2020-Mar-12
AS6200 −
Detailed Descriptions
Bus Conditions
The following conditions occur on the serial bus which is compatible to the I²C-Bus.
• Bus Idle:
The signals SDA and SCL are not actively driven and pulled to a high level by an external pull-up resistor.
• Start Data Transfer:
A transition of the SDA input from high to low level while the SCL signal is kept at high level results in a START condition. Such a START condition must precede any data transfer.
• Stop Data Transfer:
A transition of the SDA input from low to high level while the SCL signal is kept at high level results in a STOP condition. Any data transfer is finished by generating a STOP or START condition.
• Data Transfer:
The master device defines the number of data bytes between a START and STOP condition and there is no limitation in the amount of data to be transmitted.
If it is desired to read only a single MSB byte without the
LSB byte, a termination of the data transfer can be provoked by issuing a START or STOP condition on the bus.
• Acknowledge:
It is mandatory for each slave device to respond with acknowledge if the device is addressed by the master. Acknowledge is indicated by pulling down the data line (SDA) while the clock signal (SCL) is high in the acknowledge clock phase. In order to avoid an unwanted
START or STOP condition on the bus, setup and hold times must be met.
The master can signal an end of data transmission by transmitting a Not-Acknowledge on the last transmitted data byte by keeping the acknowledge bit at high level.
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Figure 30:
Serial Interface Timing Diagram
SCL
STOP START t
LOW t
RISE t
HIGH
Timing Characteristics
START t
FALL
SDA t
BUF t
HDSTA t
SUDAT t
HDDAT t
SUSTA
AS6200 −
Detailed Descriptions
t
SUSTO
STOP
Figure 31:
Bus Timing Specifications
Parameter
SCL Clock Frequency
Bus free time between STOP and
START condition
Hold time after repeated START condition
Repeated START condition setup time
Data in hold time
Data out hold time
Data setup time
SCL clock low period
SCL clock high period
Clock/Data fall time
Clock/Data rise time
Clock/Data rise time for SCL≤100kHz
Symbol
f
SCL t
BUF
Fast Mode
Min Max
0.001
0.4
600 t
HDSTA t
SUSTA t
HDDAT t
DH t
SUDAT t
LOW t
HIGH t
F t
R t
R
100
100
10
100
100
1300
600
300
300
1000
100
100
10
100
10
160
60
High Speed Mode
Min Max
0.001
3.4
Unit
MHz
160 ns
160
160
ns ns ns ns ns ns ns ns ns ns
Note(s):
1. The device will hold the SDA line high for 100 ns during the falling edge of the SCL.
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AS6200 −
Detailed Descriptions
Timing Diagrams
The following timing diagrams depict the different bus operation modes and data transmission.
Figure 32:
Timing Diagram for Word Write
1 2
Frame 1: Slave Address Byte
3 4 5 6 7 8 9 1 2
Frame 2: Index Register Byte
3 4 5 6 7 8 9
SCL
SDA
Start by master
1 0 0 1 0 A1 A0 R/W
Values are defined by
ADD0 pin setting
Acknowledge by slave
0 0 0 0 0 0 IX1 IX0
Acknowledge by slave
1 2
Frame 3: MSB Data Byte
3 4 5 6 7 8 9 1 2
Frame 4: LSB Data Byte
3 4 5 6 7 8 9
SCL
(Continued)
SDA
(Continued)
D7 D6 D5 D4 D3 D2 D1 D0
Acknowledge by slave
D7 D6 D5 D4 D3 D2 D1 D0
Acknowledge by slave
Stop by master
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AS6200 −
Detailed Descriptions
Figure 33:
Timing Diagram for Word Read
1 2
Frame 1: Slave Address Byte
3 4 5 6 7 8 9 1 2
Frame 2: Index Register Byte
3 4 5 6 7 8 9
SCL
SDA
1 0 0 1 0 A1 A0 R/W 0 0 0 0 0 0 IX1 IX0
Start by master
Values are defined by
ADD0 pin setting
Acknowledge by slave
1 2
Frame 3: Slave AddressByte
3 4 5 6 7 8 9
Acknowledge by slave
Stop by master
1
Frame 4: Register MSB Data Byte
2 3 4 5 6 7 8 9
SCL
(Continued)
SDA
(Continued)
Start by master
1 0 0 1 0 A1 A0 R/W
Acknowledge by slave
D7 D6 D5 D4 D3 D2 D1 D0
Acknowledge by master
1
Frame 5: Register LSBData Byte
2 3 4 5 6 7 8 9
D7 D6 D5 D4 D3 D2 D1 D0
Acknowledge by master
Stop by master
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ams Datasheet
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AS6200 −
Application Information
Application Information
Figure 34:
Typical Application for the AS6200 Temperature Sensor
VDD
Microcontroller
(Bus Master)
R
PU
Pull-up resistors
VDD
10nF
SDA
VDD
ADD0
Slave
SCL
VSS
ALERT
Address Select
In
the connections of the AS6200 temperature sensors to a microcontroller and the supply voltage are shown.
The AS6200 is connected to a microcontroller via an I²C bus
(SDA and SCL only). Additionally the Alert output can also be used for temperature monitoring (e.g. using the interrupt mode, refer to IM bit settings), an example is given in
where the Alert output is connected to a microcontroller.
The I²C of the AS6200 address of the can be selected by connecting the ADD0 pin to VDD or VSS (refer to
pin must not be left unconnected.
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External Components
Figure 35:
Schematic with External Components
VDD
R
PU
SCL
SDA
VDD
Decoupling
Cap
Pull-up resistors
SDA
VDD
ADD0
Slave
SCL
VSS
ALERT
ALERT
AS6200 −
Application Information
Figure 36:
Values for External Components
Parameter
Decoupling capacitor
Pull-up resistors
Min
10
10
Max Unit
nF k
Ω
18
In
and
Figure 36 the schematics for external
components are shown.
The decoupling capacitor for the supply should have a value of at least 10 nF.
The pull-up resistors on the serial interface and the interrupt also depend on the bus capacitance and on the clock speed, in
Figure 36 recommended values are given.
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ams Datasheet
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AS6200 −
Package Drawings & Markings
Package Drawings & Markings
Figure 37:
Mechanical Dimensions of the WLCSP Package
A
1
A1
ALERT
Columns
2
A2
VSS
3
A3
SCL
B
B1
ADD0
B2
VDD
B3
SDA
Top View
A
A3
SCL
3
Columns
2
A2
VSS
A1
ALERT
1
B
B3
SDA
Bottom
View ax
B2
VDD
B1
ADD0 dx
X dx d ax
RoHS
Green
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AS6200 −
Pack age Drawings & Mark ings
Figure 38:
Mechanical Specifications of WLCSP Package
Symbol
ax dx
X
Y ay dy d
Thickness (w.o. balls)
Thickness after reflow
Min
Dimension [µm]
Typ Max
1450
960
1530
1040
347.5
400
302.5
400
250
400
525
Note(s):
1. As used in
Figure 39:
Marking of WLCSP Package (Top View)
z
XXXX
AS6200
Figure 40:
Package Code
XXXX
Tracecode
ams Datasheet
[v1-05] 2020-Mar-12
AS6200 −
Ordering & Contact Information
Ordering & Contact Information
Figure 41:
Ordering Information
Ordering Code Package Marking
AS6200-AWLT-S
AS6200-AWLT-L
WLCSP
WLCSP
AS6200
AS6200
Delivery Form
7” Tape and Reel in dry pack
13” Tape and Reel in dry pack
Delivery Quantity
500 pcs/reel
5000 pcs/reel
Buy our products or get free samples online at: www.ams.com/Products
Technical Support is available at: www.ams.com/Technical-Support
Provide feedback about this document at: www.ams.com/Document-Feedback
For further information and requests, e-mail us at: [email protected]
For sales offices, distributors and representatives, please visit: www.ams.com/Contact
Headquarters
ams AG
Tobelbader Strasse 30
8141 Premstaetten
Austria, Europe
Tel: +43 (0) 3136 500 0
Website: www.ams.com
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AS6200 −
RoHS Compliant & ams Green Statement
RoHS Compliant & ams Green
Statement
RoHS:
The term RoHS compliant means that ams AG products fully comply with current RoHS directives. Our semiconductor products do not contain any chemicals for all 6 substance categories plus additional 4 substance categories (per amendment EU 2015/863), including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, RoHS compliant products are suitable for use in specified lead-free processes.
ams Green (RoHS compliant and no Sb/Br/Cl):
ams Green defines that in addition to RoHS compliance, our products are free of Bromine (Br) and Antimony (Sb) based flame retardants
(Br or Sb do not exceed 0.1% by weight in homogeneous material) and do not contain Chlorine (Cl not exceed 0.1% by weight in homogeneous material).
Important Information:
The information provided in this statement represents ams AG knowledge and belief as of the date that it is provided. ams AG bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. ams AG has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. ams AG and ams AG suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
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ams Datasheet
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AS6200 −
Copyrights & Disclaimer
Copyrights & Disclaimer
Copyright ams AG, Tobelbader Strasse 30, 8141 Premstaetten,
Austria-Europe. Trademarks Registered. All rights reserved. The material herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner.
Devices sold by ams AG are covered by the warranty and patent indemnification provisions appearing in its General Terms of
Trade. ams AG makes no warranty, express, statutory, implied, or by description regarding the information set forth herein. ams AG reserves the right to change specifications and prices at any time and without notice. Therefore, prior to designing this product into a system, it is necessary to check with ams AG for current information. This product is intended for use in commercial applications. Applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical life-support or life-sustaining equipment are specifically not recommended without additional processing by ams AG for each application. This product is provided by ams AG “AS IS” and any express or implied warranties, including, but not limited to the implied warranties of merchantability and fitness for a particular purpose are disclaimed.
ams AG shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss of use, interruption of business or indirect, special, incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical data herein. No obligation or liability to recipient or any third party shall arise or flow out of ams AG rendering of technical or other services.
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AS6200 −
Document Status
Document Status
Document Status
Product Preview
Preliminary Datasheet
Datasheet
Datasheet (discontinued)
Product Status
Pre-Development
Pre-Production
Production
Discontinued
Definition
Information in this datasheet is based on product ideas in the planning phase of development. All specifications are design goals without any warranty and are subject to change without notice
Information in this datasheet is based on products in the design, validation or qualification phase of development.
The performance and parameters shown in this document are preliminary without any warranty and are subject to change without notice
Information in this datasheet is based on products in ramp-up to full production or full production which conform to specifications in accordance with the terms of ams AG standard warranty as given in the General Terms of
Trade
Information in this datasheet is based on products which conform to specifications in accordance with the terms of ams AG standard warranty as given in the General Terms of
Trade, but these products have been superseded and should not be used for new designs
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ams Datasheet
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AS6200 −
Revision Information
Revision Information
Changes from 1-04 (2019-May-16) to current revision 1-05 (2020-Mar-12)
Updated Figure 8
Updated information about conversion time
Added information about time to enter sleep mode and recommendation how to enter sleep mode
Added information concerning longer conversion time for first single shot
Updated Figure 29
(removed Device Initialization and General Address Acquire)
Added “General Call” and “Start Byte”
Note(s):
1. Page and figure numbers for the previous version may differ from page and figure numbers in the current revision.
2. Correction of typographical errors is not explicitly mentioned.
Page
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Content Guide
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AS6200 −
Content Guide
1 General Description
1 Key Benefits & Features
2 Applications
3 Block Diagram
4 Pin Assignments
5 Absolute Maximum Ratings
6 Electrical Characteristics
6 Operating Conditions
6 Analog System Parameters
7 Detailed Descriptions
7 Digital System Parameters
8 Configuration Register
8 Alert, Bit D5
9 Conversion Rate, Bit D6-D7
11 Sleep Mode, Bit D8
11 Interrupt Mode, Bit D9
12 Polarity, Bit D10
13 Consecutive Faults, Bits D11-D12
13 Single Shot Conversion, Bit D15
14 High- and Low-Limit Registers
16 Temperature Register
18 Serial Interface
18 Bus Description
18 Data Interface
19 Bus Address
19 Read/Write Operation
20 Slave Operation
20 Slave Receiver Mode
20 Slave Transmitter Mode
20 Alert Function
21 High Speed Mode
22 Summary of Bus Commands
22 General Call
22 Start Byte
22 Timeout Function
23 Bus Conditions
24 Timing Characteristics
25 Timing Diagrams
27 Application Information
28 External Components
29 Package Drawings & Markings
31 Ordering & Contact Information
32 RoHS Compliant & ams Green Statement
33 Copyrights & Disclaimer
34 Document Status
35 Revision Information
ams Datasheet
[v1-05] 2020-Mar-12
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