ST X-STM32MP-MSP01 Manuale utente
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.
UM3076
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
TS
GPIO17 /
UART1_RTS 12 GPIO_IIS2DLPC_I
NT2
PI5 /
SAI2_SCKA
GPIO18 /
PCM CLK
13 SWITCH_1
PD7 /
SDMMC3_D
3
GPIO27 14 GND
15 GPIO_DIL24_INT1
PG15 /
SDMMC3_C
K
GPIO22 16 GPIO_FLEX_INT1
PF1 /
SDMMC3_C
MD
GPIO23 /
SD0
CMD
17 3V3 18 GPIO_ST25DV04K
_GPO
PF0 /
SDMMC3_D
0
GPIO24 /
SD0
DAT0
19 GPIO_DIL24_SPI_MO
SI
PF9/
SPI5_MOSI
GPIO10 /
SPI0_MOSI 20 GND
21 GPIO_DIL24_SPI_MI
SO
PF8 /
SPI5_MISO
GPIO9 /
SPI0_MISO 22 LED1
PF4 /
SDMMC3_D
1
GPIO25 /
SD0
DAT1
23 GPIO_DIL24_SPI_CL
K
PF7 /
SPI5_SCK
GPIO11 /
SPI0_SCK 24 GPIO_DIL24_SPI_
CS
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
1
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
S
GPIO16 /
UART1
CTS
37 GPIO_FLEX_INT2
PF5/
SDMMC3_D
2
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.
UM3076
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.
UM3076
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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