User's Manual
Table Of Contents
- 1 Features
- 2 Ordering information
- 3 Development environment
- 4 Conventions
- 5 Delivery recommendations
- 6 Hardware layout and configuration
- 6.1 Power supply management
- 6.2 Clocks
- 6.3 Reset sources
- 6.4 User buttons and LEDs
- 6.5 Physical input devices: buttons
- 6.6 Boot options
- 6.7 Embedded ST-LINK/V2-1
- 6.8 ETM TRACE Mictor-38 connector
- 6.9 JTAG connector
- 6.10 DDR3L
- 6.11 eMMC
- 6.12 NAND Flash memory
- 6.13 Quad-SPI NOR Flash memory
- 6.14 microSD card
- 6.15 Audio
- 6.16 DSI LCD
- 6.17 Camera
- 6.18 1 Gbps Ethernet
- 6.19 USB OTG HS
- 6.20 USB host
- 6.21 RS-232 port
- 6.22 CAN FD
- 6.23 Smartcard
- 6.24 ADC/DAC
- 6.25 I2C_EXT connector
- 6.26 MFX MCU
- 6.27 Motor control
- 6.28 GPIO 40-pin expansion connector
- 6.29 RGB LTDC connector
- 7 STM32MP157F-EV1 Evaluation board information
- Appendix B STM32MP157F-EV1 I/O assignment
- Appendix C Federal Communications Commission (FCC) and ISED Canada Compliance Statements
- Appendix D CE conformity
- Revision history
- Contents
- List of tables
- List of figures
6.21.1 RS-232 interface
The RS-232 transceiver MB1262/U12 supply is 3.3 V. The RS-232 interface is connected to the
STM32MP157FAA1 UART4 that is shared exclusively with the USB Micro-B ST-LINK/V2-1 VCP as described in
Table 33.
Table 33. HW configuration for the RS-232 interface
Jumpers I/O Setting
Configuration
(1)
MB1263/JP4 UART4_TX
JP4[1-2] Connected to RS-232 CN12
JP4[2-3] Connected to ST-LINK/V2-1 VCP RX
MB1263/JP5 UART4_RX
JP5[1-2] Connected to RS-232 CN12
JP5[2-3] Connected to ST-LINK/V2-1 VCP TX
1. Default configuration in bold
Figure 18. HW configuration for the RS-232 interface
Figure 19. RS-232 connector pinout MB1262/CN12
Table 34 details the RS-232 connector pinout MB1262/CN12
Table 34. RS-232 connector pinout MB1262/CN12
Board function Pin Pin Board function
NC 1 6 DSR
RXD 2 7 NC
TXD 3 8 CTS
UM2648
RS-232 port
UM2648 - Rev 1
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