UM2942

User manual

Getting started with the industrial smart sensor kit based on L6364W dual IO-Link device transceiver

Introduction

The STEVAL-IOD04KT1 is a reference design kit that exploits the features of the L6364W IO-Link dual-channel device transceiver.

The kit consists of the STEVAL-IOD004V1 main board (not available for sale), the STLINK-V3MINI programmer and debugger tool, a 14-pin flat cable, and an M8 to M12 standard industrial connector adapter.

The kit acts as a modern smart industrial sensor to be connected to a master IO-Link hub (or a suitable PLC interface).

The power supply for the MCU, sensors, and other logic devices derives from the DC-DC converter controller embedded in the

L6364W .

The on-board STM32G071EB microcontroller runs an IO-Link demo stack v.1.1, which controls the IO-Link communication, and the software code that manages the L6364W transceiver and the MEMS industrial sensors.

The tiny dimensions of the main board have been achieved thanks to the small sizes of the CSP package options of L6364W and STM32G071EB .

Connect the main board to an IO-Link master via the adapter and the M8 connector included in the kit for normal operation.

Connect the same board to the STLINK-V3MINI through the flat cable only if you want to program the STM32G071EB with a new firmware.

Figure 1. STEVAL-IOD04KT1 evaluation kit

UM2942 - Rev 1 - October 2021

For further information contact your local STMicroelectronics sales office.

www.st.com

1

1.1

UM2942

Getting started

Getting started

•

•

Features

Kit content:

– STEVAL-IOD004V1 (45.8 x 8.3 mm) main board with shape easy to be integrated in industrial sensors housing (not available for separate sale)

– STLINK-V3MINI programmer and debugger tool

– M8-M12 industrial connector adapter including a 20 cm cable

– 14-pin flat cable

Main board features:

– Industrial sensor node based on STM32G071EB (mainstream Arm ® Cortex ® -M0+ RISC core MCU operating at up to 64 MHz frequency), L6364W (dual channel transceiver IC for SIO and IO-Link sensor applications), IIS2MDC (high accuracy, ultra-low-power, 3-axis digital output magnetometer) and ISM330DHCX (iNEMO inertial module with machine learning core, and finite state machine with digital output for industrial applications)

– Runs an IO-Link v.1.1 demo-stack and MEMS control software, included in the companion package

STSW-IOD04K together with the IODD file

– Operating voltage range 7 to 32 V

– Four-pole M8 industrial standard connector

– L6364W embedded DC-DC converter provides 3.3 V supply for all on-board ICs

– General-purpose LEDs for transmission, programming/debugging, warning, and status

– Jumpers for CQ and DIO selection in independent or joint mode

– Switch for transmission mode selection (transparent, single, or multioctet)

– Reset button

– 10-pin connector for sensor expansion options

– SWD connector for debugging and programming capability

– Protections against surge pulse (up to ± 3APK with 500 Ω coupling) and reverse polarity

– EMC and EMI tested according to standard requirements

– RoHS compliant

UM2942 - Rev 1 page 2/20

1.2

Main board hardware architecture

Figure 2. Main board functional block diagram

UM2942

Main board hardware architecture

1.3

1.3.1

The figure above shows the functional block of the main board.

The connection of the blocks results in a robust architecture implementing a smart industrial sensor node connected as IO-Link device.

The design is centered on the STM32G071EB microcontroller, which manages the IO-Link protocol mini-stack code embedded to drive the L6364W device transceiver.

The M8 4-way plug connector is strictly related to the L6364W transceiver. This connector allows establishing half duplex IO-Link communication with an IO-Link master and with a power supply rail (≤ 32 V).

The blocks on the left hand identify the sensors: the ISM330DHCX 6-axis inertial module device with machine learning core and the IIS2MDC 3-axis digital magnetometer.

Main board components

STM32G071EB

The STM32G071x8/xB mainstream microcontrollers are based on high-performance Arm

®

Cortex

®

-M0+ 32-bit

RISC core operating at up to 64 MHz frequency. Offering a high level of integration, they are suitable for a wide range of applications in consumer, industrial and appliance domains, as well as Internet of Things (IoT) solutions.

These microcontrollers incorporate a memory protection unit (MPU), high-speed embedded memories (36 kbytes of SRAM and up to 128 kbytes of Flash program memory with read protection, write protection, proprietary code protection, and secure area), DMA, an extensive range of system functions, enhanced I/Os, and peripherals.

Optimized dynamic consumption, together with a comprehensive set of power-saving modes, low-power timers and low-power UART, allows the design of low-power applications.

The devices operate within ambient temperatures from -40 to 125°C and with supply voltages from 1.7 to 3.6 V.

V

BAT

direct battery input allows keeping RTC and backup registers powered.

For further information, see the STM32G071EB relevant web page.

UM2942 - Rev 1 page 3/20

1.3.2

1.3.3

1.3.4

UM2942

Main board components

•

•

•

•

•

•

•

•

•

•

•

•

L6364

The L6364 is a dual-channel transceiver for industrial sensor applications. It has been designed to support the

IO-Link standard and acts as a bridge between a microcontroller with a sensor or actuator function, a supply (up to 32 V), and a signaling cable.

In normal operation, the microcontroller configures the L6364 via the SPI interface at start-up. Thus, the L6364 operates as a single input/output IO-Link device driving the output lines as configured by the microcontroller. If the device is connected to an IO-Link master, then the master can initiate communication and exchange data with the microcontroller while the L6364 acts as a physical layer for the communication.

The main features are: supply voltage from 5 to 35 V low dissipative (5 Ω) CQ and DIO output stages configurable in high-side, low-side, push/pull configurable (0.11 to 0.25 A) current limitation threshold of CQ and DIO lines configurable (0.22 to 0.5 A) current limitation threshold of CQ/DIO line (join mode) full protections:

– embedded reverse polarization diode (D

OUT

pin)

– full zero current reverse polarity between V plus

, CQ, DIO, and PGND pins

– configurable (up to 216°C) thermal shutdown threshold

– 7-bit, calibrated, temperature measurement

– configurable (6.0 to 15 V) V plus

undervoltage detection

– CQ and DIO short-circuit current limit and reporting

-40 to +150°C operating temperature suitable to drive L, C, and R loads integrated UART peripheral with M-sequence handling (including checksum) for all IO-Link sequences according to specification v1.1

single octet UART mode for unlimited M-sequence size and continuous data transfer designed to meet the following application requirements:

– ESD IEC 61000-4-2 protection to 4 kV

– EMC surge protection 2A/50 μs (coupling 500 Ω)

QFN-20L 4x4 mm and CSP 2.5x2.5 mm (used for the design of STEVAL-IOD004V1) packages available internal DC-DC buck converter controller with two internal MOS switches. A configurable switching frequency buck converter can be obtained with an external capacitor and an inductor. The device also includes linear regulators, which can optionally be used.

ISM330DHCX

The ISM330DHCX is a system-in-package featuring a high-performance 3D digital accelerometer and 3D digital gyroscope tailored for Industry 4.0 applications.

The various sensing elements have been manufactured using specialized micro-machining processes, while the

IC interfaces have been developed using CMOS technology that allows the design of a dedicated circuit trimmed to match better the characteristics of the sensing element.

In the ISM330DHCX , the sensing elements of the accelerometer and of the gyroscope are implemented on the same silicon die, thus guaranteeing superior stability and robustness.

The ISM330DHCX has a full-scale acceleration range of ±2/±4/±8/±16 g and a wide angular rate range of

±125/±250/±500/±1000/±2000/±4000 dps, permitting its usage in a broad range of applications.

All the design aspects and the calibration of the ISM330DHCX have been optimized to reach superior accuracy, stability, extremely low noise and full data synchronization.

An unmatched set of embedded features (machine learning core, programmable FSM, FIFO, sensor hub, event decoding and interrupts) enables the implementation of smart and complex sensor nodes for high performance at very low power.

IIS2MDC

The IIS2MDC is a high-accuracy, ultra-low-power 3-axis digital magnetic sensor, with a magnetic field dynamic range of up to ±50 gauss.

UM2942 - Rev 1 page 4/20

UM2942

Main board components

The IIS2MDC includes an I²C serial bus interface that supports standard mode, fast mode, fast mode plus, and high-speed (100 kHz, 400 kHz, 1 MHz, and 3.4 MHz) as well as an SPI serial standard interface.

The device can be configured to generate an interrupt signal for magnetic field detection.

The IIS2MDC is available in a plastic land grid array package (LGA) and is guaranteed to operate over an extended temperature range (from -40°C to +85°C).

UM2942 - Rev 1 page 5/20

2

UM2942

How to run the STEVAL-IOD004V1 smart industrial sensor

How to run the STEVAL-IOD004V1 smart industrial sensor

To run the STEVAL-IOD004V1 main board with the STSW-IOD04K preloaded firmware, follow the procedure below.

Step 1.

Connect the board to an IO-Link master embedding a standard M8 4-way socket side connector.

If the IO-Link master and the available cabling are M12, you can use the M8 to M12 connector adapter provided in the STEVAL-IOD04KT1 reference design kit.

Once the STEVAL-IOD004V1 is connected to a master, it should recognize the sensor node thanks to the IODD file preloaded in the STSW-IOD04K , assuming that the cable is correctly powering the smart industrial sensor node at 24 V and below 32 V.

Step 2.

Use the STLINK-V3MINI compact in-circuit debugger and programmer for STM32 included in the kit to debug code for firmware analysis or for code modification.

UM2942 - Rev 1 page 6/20

3

Note:

UM2942

Firmware overview

Firmware overview

The STSW-IOD04K is the firmware associated to the STEVAL-IOD04KT1 reference design kit.

This firmware package is available for download at www.st.com

.

The package includes freely customizable C-code written examples to speed up the development time.

This IO-Link protocol mini-stack has some limitations regarding event management and ISDU, which are not included.

UM2942 - Rev 1 page 7/20

4

a) ISM330DHCX inemo inertial module b) IIS2MDC - Magnetometer

Schematic diagrams

Sensors

SENSORS

Figure 3. STEVAL-IOD004V1 (main board) circuit schematic (1 of 4)

MCU

MCU STM32G071EB

L6364

L6364_SS

L6364_SS

DUAL IO LINK

L6364_SS

USART2_TX_MCU

USART2_RX_SN

USART2_TX_SN

USART2_RX_MCU

USART2_TX

USART2_RX

L6364_UART RX

L6364_UART RX

L6364_UART RX

VCC

L6364_UART TX

I2C_SDA

L6364_UART TX L6364_UART TX

I2C_SDA I2C_SDA

DIO

I2C_SCL

I2C_SCL

I2C_SCL CLTD

CTLD

CTLD

L6364_INT

L6364_INT L6364_INT CQ

IIS2DMC_DRDY

IIS2DMC_DRDY

IIS2DMC_DRDY L6364_MISO

L6364_MOSI

L6364_MISO

L6364_MOSI

L6364_MISO

L6364_MOSI

INT2_iNEMO INT2_iNEMO

L6364_SCLK

L6364_SCLK

L6364_SCLK

INT1_iNEMO INT1_iNEMO

M8_IOLINK Connectror

Figure 4. STEVAL-IOD004V1 (main board) circuit schematic (2 of 4)

IO-Link Device supply voltage Range 7v-32v

VCC

DIO

1

CN1

3

CQ

IO-link 4-position M8 A-coded connector

Male Rear PCB Mount

L6364_UART RX

L6364_UART RX

JP2

32V

CQ & DIO shorted together

(JOIN mode) => JP3 closed

JP1

C1

470pF

CQ & DIO independent

(DIO mode) => JP3 open, Jp1 closed default open

CQ

DIO

L6364_UART TX

L6364_UART TX

C3

470pF default closed

JP3 0

JP4 default closed

0

L6364_INT

L6364_MOSI

L6364_MISO

L6364_SS

L6364_SCLK

A2

A3

B3

A4

B4

INT

MOSI

MISO

SS

SCK

C2

220nF

U1

L6364 (CSP) default CLOSE 1-2

R1 4.7K

CTLD

CTLD

DOUT

LOUT

LED2

LED1

B2

D2

D3

D5

C3

L6364_CTLD

C LD1

LED RED

C LD2 A

TP2

A

LED GREEN

L1

220uH

3V3

3V3

L6364_SCLK

L6364_UART RX

L6364_UART TX

L6364_SS

L6364_INT

L6364_MISO

L6364_MOSI

L6364_SCLK

L6364_UART RX

L6364_UART TX

L6364_SS

L6364_INT

L6364_MISO

L6364_MOSI

GND

C6

4.7uF

C7

100nF

1

SW1

2

3

TP1

C5

2.2uF

C4

10nF

L6364_CTLD

Analog and digital ground connected only at a point

Figure 5. STEVAL-IOD004V1 (main board) circuit schematic (3 of 4)

3V3

3V3

C8

22uF

3V3

R2

10K

NRST

3V3

INT2_iNEMO

L6364_UART RX

R6

R3

2.7K

U2

USART2_RX

SYS_SWCLK

MCU_PB5

I2C_SDA

100

USART1_TX

L6364_MISO

PA3

PA0

3V3

C1

C2

C3

C4

C5

A1

A2

A3

A4

A5

C12

22uF

PA15

PA14-BOOT0

PB5

PB7

PC14-ASC32IN

PA11[PA9]

PA6

PA3

PA0

VDD/VDDA

VSS/ASSA

PA1

PA4

PA7

PA8

PC15-ASC32OUT

PB8

PB6

PA13

PA12[PA10]

STM32G071EBY

D5

D4

D3

D2

D1

B5

B4

B3

B2

B1

3V3

PA1

PA4

L6364_MOSI

L6364_INT

L6364_SS

I2C_SCL

L6364_CTLD

SYS_SWDIO

USART1_RX

R5

GND

100

GND

R4

2.7K

L6364_UART TX

GND

DEBUG LED

Low Current

PA0 PA1 PA3 PA4

3V3

3V3

C10

100nF

3V3

C11

100nF

LD3

LED BLUE

SW2 miniswitch

NM

R7

10K

GND

NM

R8

10K

GND

NM

R9

10K

GND

NM

R10

10K

GND

MCU_PB5

R11

680

L6364_INT

L6364_SS

L6364_MOSI

L6364_MISO

L6364_CTLD

I2C_SDA

I2C_SCL

L6364_UART RX

L6364_UART TX

GND

C9

100nF

J1

GND

1

3

5

7

9

2

4

6

8

10

SYS_SWDIO

SYS_SWCLK

NRST

SWD connector -Programming

L6364_INT

L6364_SS

L6364_MOSI

L6364_MISO

CLTD

I2C_SDA

I2C_SCL

L6364_UART RX

L6364_UART TX

Figure 6. STEVAL-IOD004V1 (main board) circuit schematic (4 of 4)

3V3

R12

4.7K

I2C_SCL

CS

I2C_SDA

C21

220nF

3

4

1

2

5

6

SCL/SPC

NC_1

CS

SDA/SDI/SDO

C1

GND_1

U3

INT/DRDY

GND_2

VDD

VDD_IO

NC_2

NC_3

IIS2MDC

7

8

9

10

11

12

IIS2DMC_DRDY

C18

3V3

C13

100nF 10uF

IIS2DMC_DRDY

3V3

C14

100nF

GND

1- select i2C

3V3

R13

10K

I2C_SCL

I2C_SDA

ISM330DHCX

U4

I2C_SCL

I2C_SDA

3V3

12

13

14

CS

SCL

SDA

R14

10K NM

3V3

GND2

GND1

VDDIO

7

6

5

INT2_iNEMO

GND

VDD_IO

INT1_iNEMO

R15

10K

GND

C19

10uF

3V3

C16

100nF

GND

3V3

C15

100nF

GND

USART2_RX_SN

GND

GND

J2

3V3

I2C_SCL

I2C_SDA

USART2_TX_MCU

1

3

5

7

9

2

4

6

8

10

3V3

I2C_SCL

I2C_SDA

USART2_RX_MCU

USART2_TX_SN

Sensor Expansion Connector GND

C20

10uF

3V3

5

UM2942

Bill of materials

Bill of materials

1

2

3

Item

1

1

1

Q.ty

Table 1. STEVAL-IOD04KT1 bill of materials

Ref.

Table 2. STEV

AL-IOD004V1

-

Part/value Description Manufacturer

Main board ST

STLINK-

V3MINI

Cable adapter -

-

In-circuit debugger and programmer for STM32

M8 to M12 adapter including a

20 cm cable

ST

Katlax

Order code

Not available for separate sale

STLINK-V3MINI

CDF08S-M12S5-0.2BPVC

4

5

2

3

Item Q.ty

1 2

Ref.

C1, C3

1

1

C2

C4

6

7

8

9

1

1

8

2

3

1

C5

C6

C7, C9,

C10, C11,

C14, C15,

C16, C18

C8, C12

C13, C19,

C20

C21

10 1 CN1

11

12

1

1

13 4

14 1

15 1

16 1

17 1

18 1

19 2

20 2

21 2

J1

J2

JP1, JP2,

JP3, JP4

L1

LD1

LD3

LD2

R1

R2, R15

R3, R4

R5, R6

Table 2. STEVAL-IOD004V1 (main board) bill of materials

Part/value

470 pF, 0603, 50 V

220 nF, 0402, 25 V

10 nF, 0402, 25 V

Description

Ceramic capacitors

Ceramic capacitor

Ceramic capacitor

2.2 µF, 0402, X5R, 25 V ±10% Ceramic capacitor

4.7 µF, X5R, 0201, 6.3 V ±20% Ceramic capacitor

100 nF X5R, 0201, 10 V ±10% Ceramic capacitors

22 µF X5R, 0402, 6.3 V, ±20%

10 µF X5R, 0402, 6.3 V ±20%

Ceramic capacitors

Ceramic capacitors

220 nF X5R, 0402, 6.3 V ±10% Ceramic capacitor

IO LINK M8, PTH 4-pin male rear PCB mount

SWD connector - programming,

SMD

IO-Link 4-position M8

A-coded connector

Connector header

Sensor expansion connector,

PTH 10-pin

Sensor expansion connector

0 Ohm Jumper, drop 0402 Jumpers

220 µH, ±10%, SMD

LED, 20 mA, 0402

Fixed inductor

Red LED

LED, 20 mA, 2.5 V, 0402 Blue LED

LED, 20 mA, 0402 Green LED

4.7 K Ohm, 1/20 W ±1%, 0201 Resistor

10 K Ohm, 1/20 W ±1%, 0201 Resistors

2.7 K Ohm, 1/20 W ±1%, 0201

100 Ohm, 1/20 W ±1%, 0201

Resistors (not mounted)

Resistors

Manufacturer

Any Any

Any

Any

Any

Any

Any

Any

Any

Any

Order code

Any

Any

Any

Any

Katlax

Samtec Inc.

Harwin

Any

Würth

Würth

Kingbright

Würth

Any

Any

Any

Any

Any

Any

Any

Any

CPM08-RM8BR4-S0

FTSH-105-01-L-DV-K-

TR

M50-3200545

Any

744032221

150040RS73240

APHHS1005LQBC/D-V

150040VS73240

Any

Any

Any

Any

UM2942 - Rev 1 page 12/20

UM2942 - Rev 1

UM2942

Bill of materials

Item Q.ty

22

23

5

1

Ref.

R7, R8, R9,

R10, R14

R11

24

25

26

27

28

29

30

31

32

33

1

1

1

1

2

1

1

1

1

1

R12

R13

SW1

SW2

TP1, TP2

U1

U2

U3

U4

Cable

Adapter

Part/value

10 K Ohm, 1/20 W ±1%, 0201

680 Ohm, 1/20 W ±1%, 0201

Description

Resistors (not mounted)

Resistor

Manufacturer

Any

Any

4.7 K Ohm, 1/20 W ±1%, 0201

10 K Ohm, 1/16 W ±1%, 0402

3-pin, drop SMD

Mini switch, SMD

Test point, SMD

L6364 (CSP), CSP-19

STM32G071EBY, WLCSP-25

IIS2MDC, LGA-12

ISM330DHCX, LGA-14

Resistor (not mounted)

Resistor

Switch

Any

Switch

Test points

Dual channel transceiver IC for SIO and IO-Link sensor applications

Mainstream Arm

Cortex-M0+ MCU

ST

ST

High accuracy, ultra-low-power, 3axis digital output magnetometer

IMUs - Inertial

Measurement Units iNEMO inertial module: 3D accelerometer and 3D gyroscope

ST

ST

Any

Any

E-Switch

Keystone

Any

Any

Any

Order code

Any

Any

TL3780AF240QG

5015

L6364W

STM32G071EBY6TR

IIS2MDCTR

ISM330DHCXTR

Cable adapter M8-M12 20 cm Cable Katlax

CDF08S4-

M12S5-02BPVC page 13/20

6

UM2942

Board versions

Board versions

Table 3. STEVAL-IOD04KT1 versions

Finished good

STEVAL$IOD04KT1A (1)

Schematic diagrams

STEVAL$IOD04KT1A schematic diagrams

1. This code identifies the STEVAL-IOD04KT1 evaluation board first version.

Bill of materials

STEVAL$IOD04KT1A bill of materials

UM2942 - Rev 1 page 14/20

7

UM2942

Regulatory compliance

Regulatory compliance

Formal Notice Required by the U.S. Federal Communications Commission

FCC NOTICE:

This kit is designed to allow:

(1) Product developers to evaluate electronic components, circuitry, or software associated with the kit to determine whether to incorporate such items in a finished product and

(2) Software developers to write software applications for use with the end product.

This kit is not a finished product and when assembled may not be resold or otherwise marketed unless all required FCC equipment authorizations are first obtained. Operation is subject to the condition that this product not cause harmful interference to licensed radio stations and that this product accept harmful interference. Unless the assembled kit is designed to operate under part 15, part 18 or part 95 of this chapter, the operator of the kit must operate under the authority of an FCC license holder or must secure an experimental authorization under part 5 of this chapter 3.1.2.

Formal Product Notice Required by Industry Canada Innovation, Science and Economic Development

Canada compliance :

For evaluation purposes only. This kit generates, uses, and can radiate radio frequency energy and has not been tested for compliance with the limits of computing devices pursuant to Industry Canada (IC) rules.

À des fins d'évaluation uniquement. Ce kit génère, utilise et peut émettre de l'énergie radiofréquence et n'a pas

été testé pour sa conformité aux limites des appareils informatiques conformément aux règles d'Industrie Canada

(IC).

Formal product notice required by EU

This device is in conformity with the essential requirements of the Directive 2014/30/EU (EMC) and of the

Directive 2015/863/EU (RoHS).

UM2942 - Rev 1 page 15/20

Revision history

Date

27-Oct-2021

Table 4. Document revision history

Revision

1 Initial release.

Changes

UM2942

UM2942 - Rev 1 page 16/20

UM2942

Contents

Contents

1 Getting started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

1.1

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.2

Main board hardware architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.3

Main board components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.3.1

1.3.2

1.3.3

STM32G071EB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

L6364 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

ISM330DHCX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.3.4

IIS2MDC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2 How to run the STEVAL-IOD004V1 smart industrial sensor . . . . . . . . . . . . . . . . . . . . . . . . .6

3 Firmware overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

4 Schematic diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

5 Bill of materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

6 Board versions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

7 Regulatory compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

List of tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

List of figures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

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UM2942

List of tables

List of tables

Table 1. STEVAL-IOD04KT1 bill of materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Table 2. STEVAL-IOD004V1 (main board) bill of materials. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Table 3. STEVAL-IOD04KT1 versions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Table 4. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

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UM2942

List of figures

List of figures

Figure 1. STEVAL-IOD04KT1 evaluation kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Figure 2. Main board functional block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Figure 3. STEVAL-IOD004V1 (main board) circuit schematic (1 of 4). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Figure 4. STEVAL-IOD004V1 (main board) circuit schematic (2 of 4). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Figure 5. STEVAL-IOD004V1 (main board) circuit schematic (3 of 4). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Figure 6. STEVAL-IOD004V1 (main board) circuit schematic (4 of 4). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

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