ST X-STM32MP-MSP01 User manual

Introduction

The X-STM32MP-MSP01 multisensor expansion board embeds the following devices:

•the ISM330DHCX iNEMO 3-axis accelerometer and 3-axis gyroscope

• the IIS2MDC 3-axis magnetometer

• the IIS2DLPC 3-axis accelerometer

• the MP23DB02MM digital microphone

• the LPS22HH pressure sensor

• the STTS22H temperature sensor

• the VL53L5CX Time-of-Flight sensor

• the VD6283TX ambient light sensor

• the ST25DV64KC NFC RFID tag

The X-STM32MP-MSP01 interfaces with the STM32MP157F-DK2 microprocessor via a 40-pin GPIO connector, using I²C, SPI,

and GPIO peripherals.

The X-STM32MP-MSP01 expansion board is compatible with both the STM32MP157F-DK2 and Raspberry Pi GPIO expansion

connector layout.

Figure 1. X-STM32MP-MSP01 expansion board

Getting started with the X-STM32MP-MSP01 expansion board for the

STM32MP157F-DK2 discovery kit

UM3076

User manual

UM3076 - Rev 1 - October 2022

For further information contact your local STMicroelectronics sales office. www.st.com

1Getting started

1.1 Overview

The X-STM32MP-MSP01 is powered via a standard 3.3 V supply through the STM32MP157F-DK2 GPIO

connector.

The figure below shows the component placement on the board.

Figure 2. X-STM32MP-MSP01 component placement details

The X-STM32MP-MSP01 interfaces with the main board via an I²C interface along with some GPIO pins for

interrupts. A DIL 24-pin socket is available for additional MEMS adapters and other sensors.

The I²C sensor hub features on the ISM330DHCX are also available by using solder bridges.

The expansion board mounts an LDO to generate 1.8 V for all the MEMS sensors. A level shifter between 1.8

V and 3.3 V translates all the signals between the sensors and the main board. Two LEDs and one switch are

available on the board as the user interface.

UM3076

Getting started

UM3076 - Rev 1 page 2/38

Figure 3. System block diagram

1.2 System requirements

To test the X-STM32MP-MSP01, you need:

•an X-STM32MP-MSP01 expansion board

• an STM32MP157F-DK2 discovery kit

• a laptop/desktop (with Windows 10 or above)

• a USB Type-A to micro-B USB cable (for connection as a virtual serial device, if required)

• a USB PD compliant 5 V 3 A power supply with a USB Type-C® to Type-C® cable.

1.3 Board setup

To set up the board, follow the steps below.

Step 1. Check the position of the jumper on the J4 connector.

This jumper enables the write operation for the EEPROM, if required.

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System requirements

UM3076 - Rev 1 page 3/38

Step 2. Connect the X-STM32MP-MSP01 to the STM32MP157F-DK2 from the top, as shown below.

Figure 4. X-STM32MP-MSP01 connected to STM32MP157F-DK2

Step 3. Power the STM32MP157F-DK2 using the USB Type-C® cable.

Step 4. Program the supported firmware in the microSD™ card of the STM32MP157F-DK2 board.

The X-STM32MP-MSP01 board is ready for use.

UM3076

Board setup

UM3076 - Rev 1 page 4/38

2Component description

2.1 EEPROM: M24C32-R

The M24C32-R is a 32-Kbit I²C-compatible EEPROM, organized as 4 K × 8 bits. It can operate with a supply

voltage from 1.8 V to 5.5 V

Table 1. EEPROM details

Features Description

Order code M24C32-RMN6TP

Package SO8

Operating voltage 1.8 V to 5.5 V

The EEPROM communicates with the X-STM32MP-MSP01 through I²C signals. The J4 jumper enables the write

enable feature on the device. You can perform the read and write operation by setting the jumper as detailed in

the following table.

Table 2. EEPROM jumper details

Jumper EEPROM

1-2 WRITE_ENABLE

2-3 (default) WRITE_DISABLE

Figure 5. EEPROM section

2.2 40-pin GPIO connector

The on-board devices are controlled through the main board using various peripheral pins available on a 40-pin

GPIO connector. The series resistors are used to isolate the pins of the GPIO connector.

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Component description

UM3076 - Rev 1 page 5/38

Table 3. GPIO connector pin configuration

Pin no. Name ST MPU RPi Pin no. Name ST MPU RPi

1 3V3 2 5V0

3 SDA PA12 /

I2C5_SDA

GPIO 2/

I2C1_SDA 4 5V0

5 SCL PA11 /

I2C5_SCL

GPIO3 /

I2C1_SCL 6 GND

7GPIO_IIS2MDC_INT_

DRDY PA8/ MCO1 GPIO4 /

GPCLK0 8GPIO_ISM330DHC

_INT1

PB10 /

USART3_TX

GPIO0 /

USART3

_TX

9 GND GND 10 GPIO_ISM330DHC

_INT2

PB12 /

USART3_RX

GPIO0 /

USART3

_RX

11 GPIO_LPS22HH_INT

_DRDY

PG8 /

USART3_R

GPIO17 /

UART1_RTS 12 GPIO_IIS2DLPC_I

NT2

PI5 /

SAI2_SCKA

GPIO18 /

PCM CLK

13 SWITCH_1

PD7 /

SDMMC3_D

GPIO27 14 GND

15 GPIO_DIL24_INT1

PG15 /

SDMMC3_C

GPIO22 16 GPIO_FLEX_INT1

PF1 /

SDMMC3_C

GPIO23 /

SD0

CMD

17 3V3 18 GPIO_ST25DV04K

_GPO

PF0 /

SDMMC3_D

GPIO24 /

SD0

DAT0

19 GPIO_DIL24_SPI_MO

PF9/

SPI5_MOSI

GPIO10 /

SPI0_MOSI 20 GND

21 GPIO_DIL24_SPI_MI

PF8 /

SPI5_MISO

GPIO9 /

SPI0_MISO 22 LED1

PF4 /

SDMMC3_D

GPIO25 /

SD0

DAT1

23 GPIO_DIL24_SPI_CL

PF7 /

SPI5_SCK

GPIO11 /

SPI0_SCK 24 GPIO_DIL24_SPI_

PF6 /

SPI5_NSS

GPIO8 /

SPI0 CE0

25 GND 26 GPIO_IIS2DLPC_I

NT1 PF3 / GPIO7 GPIO7 /

SPI0 CE1

27 EEPROM_ID_SD PF15/

I2C1_SDA

GPIO0/

I2C0_SDA 28 EEPROM_ID_SC PD12 /

I2C1_SCL

GPIO1 /

I2C0 SCL

29 GPIO_STTS22H_INT PG2/ MCO2 GPIO5 /

GPCLK1 30 GND

31 GPIO_VD6283_GPIO

PH11 /

TIM5_CH2

GPIO6 /

GPCLK2 32 LED2 PD13 /

TIM4_CH2

GPIO12 /

PWM0

33 GPIO_MP23DB02_D

OUT

PC7/

TIM3_CH2

GPIO13 /

PWM1 34 GND

35 GPIO_VL53L_INT PI7 /

SAI2_FSA

GPIO19 /

PCM FS 36 GPIO_MP23DB02_

CLK

PB13 /

USART3_CT

GPIO16 /

UART1

CTS

37 GPIO_FLEX_INT2

PF5/

SDMMC3_D

GPIO26 /

SD0 DAT2 38 GPIO_VL53L_I2C_

RST

PI6 /

SAI2_SDA

GPIO20 /

PCM DIN

39 GND 40 GPIO_VL53L_LPn PF11 /

SAI2_SDB

GPIO21 /

PCM

DOUT

UM3076

40-pin GPIO connector

UM3076 - Rev 1 page 6/38

Figure 6. GPIO connector circuit

2.3 Level translator: ST2378E

The ST2378E device is an 8-bit, dual supply, bidirectional level translator with ±15 kV ESD protection on I/Os at

VCC side. It is designed to interface data transfer between low voltage ASICs/PLDs and higher voltage systems.

Externally applied voltage, VCC and VL, set logic levels at both sides with the range specified as 1.71 V ≤ VL≤ 5.5

V and VL≤ VCC≤ 5.5 V. For proper operation, VCC should be set higher than VL.

Using a transmission-gate-based design, this device allows bidirectional asynchronous data transfer. This means

that each channel is allowed to have either VCC to VL or VL to VCC data transfer direction independently; no

direction pin is required.

The ST2378E device operates at a guaranteed data rate of 13 Mbps over the entire specified operating voltage

range. The OE pin allows the disable mode operation whereby the current consumption is reduced to less than 1

μA.

Table 4. ST2378E details

Features Description

Order code ST2378ETTR

Package 20-TSSOP

Operating voltage 1.71 V to 5.5 V

As all the on-board sensors operate at 1.8 V, the voltage is shifted before communicating with the 40-pin GPIO

connector.

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Level translator: ST2378E

UM3076 - Rev 1 page 7/38

Figure 7. ST2378ETTR circuit

2.4 Accelerometer and gyroscope: ISM330DHCX

The ISM330DHCX is a system-in-package featuring a high-performance 3-axis digital accelerometer and 3-axis

digital gyroscope tailored for Industry 4.0 applications. 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 that enable its usage in a broad range of applications.

An unmatched set of embedded features (machine learning core, programmable FSM, FIFO, sensor hub, event

decoding, and interrupts) enable the implementation of smart and complex sensor nodes, which deliver a high

performance at very low power.

Table 5. ISM330DHCX details

Features Description

Order code ISM330DHCXTR

Package 14-LGA

Operating voltage 1.71 V to 3.6 V

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.

The ISM330DHCX has an I²C sensor hub, which allows it to behave as the I²C master for other slave devices

connected via an I²C auxiliary bus. Various configurations are possible for different I²C bus connections with or

without the ISM330DHCX sensor hub.

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Accelerometer and gyroscope: ISM330DHCX

UM3076 - Rev 1 page 8/38

Figure 8. ISM330DHCXTR circuit

2.5 Linear accelerometer: IIS2DLPC

The IIS2DLPC is an ultra-low-power high-performance three-axis linear accelerometer with digital I²C/SPI output

interface, which leverages on the robust and mature manufacturing processes already used for the production

of micromachined accelerometers. The IIS2DLPC has user-selectable full scales of ±2g/±4g/±8g/±16g and is

capable of measuring accelerations with output data rates from 1.6 Hz to 1600 Hz.

The IIS2DLPC has dedicated embedded features to process motion and acceleration detection including free-fall,

wakeup, highly configurable single/double-tap recognition, activity/inactivity, stationary/motion detection, portrait/

landscape detection, and 6D/4D orientation. It features a data-ready signal, which indicates when a new set of

measured acceleration data is available, thus simplifying data synchronization in the digital system that uses the

device.

Table 6. IIS2DLPCTR details

Features Description

Order code IIS2DLPCTR

Package 12-LGA

Operating voltage 1.62 V to 3.6 V

Figure 9. IIS2DLPCTR circuit

2.6 Magnetic sensor: IIS2MDC

The IIS2MDC is a high-accuracy, ultra-low-power 3-axis digital magnetic sensor. The IIS2MDC has a magnetic

field dynamic range up to ±50 gauss.

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Linear accelerometer: IIS2DLPC

UM3076 - Rev 1 page 9/38

The IIS2MDC includes an I²C serial bus interface that supports standard, fast mode, fast mode plus, and high-

speed (100 kHz, 400 kHz, 1 MHz, and 3.4 MHz).

The device can be configured to generate an interrupt signal for magnetic field detection. It can be used as a

slave device with the ISM330DHCX device configured as a master using the solder bridge configuration.

Table 7. IIS2MDC details

Features Description

Order code IIS2MDCTR

Package 12-LGA

Operating voltage 1.71 V to 3.6 V

Figure 10. IIS2MDC circuit

2.7 Microphone: MP23DB02MM

The MP23DB02MM is an ultra-compact, low-power, omnidirectional, digital MEMS microphone built with a

capacitive sensing element and an IC interface with optional stereo configuration. The sensing element, capable

of detecting acoustic waves, is manufactured using a specialized silicon micromachining process dedicated to

produce audio sensors. It has a narrow sensitivity range of ±1 dB, high SNR, and low distortion for all operative

modes.

Table 8. MP23DB02MM details

Features Description

Order code MP23DB02MMTR

Package RHLGA 5LD

Two digital microphones are available on the board to give flexibility for different configurations. Both are mounted

from the bottom with hole on the PCB to input the audio signal. MP23DB02MM offers multiple performance

modes enabled by different clock frequency ranges (power down, low power, and normal mode).

UM3076

Microphone: MP23DB02MM

UM3076 - Rev 1 page 10/38

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