User manual

microSD card connector

Pin # Signal name

1 DAT2/RES

2 CD/DAT3/CS

3 CMD/DI

4 VDD

5 SCL/SCLK

6 VSS

7 DAT0/RES

8 DAT1/RES

Notice that the pad numeration is written at the bottom of STM32-E407 under the microSD card

connector.

When removing the card, please make sure that you release it from the connector by pushing and

NOT by pulling the card directly (this can damage both the connector and the microSD card).

6.3 UEXT module

STM32-E407 board has UEXT connector and can interface Olimex's UEXT modules.

For more information on UEXT please visit: https://www.olimex.com/Products/Modules/UEXT/

UEXT connector

Pin # Signal name

1 3.3V

2 GND

3 PC6/USART6_TX

4 PC7/USART6_RX

5 PB8/I2C1_SCL

6 PB9/I2C1_SDA

7 PC2/SPI2_MISO

8 PC3/SPI2_MOSI

9 PB10/SPI2_SCK/UART3_TX

10 PG10/UEXT_CS

6.4 USB_OTG1

USB On-The-Go, often abbreviated USB OTG, is a specification that allows USB devices such as

digital audio players or mobile phones to act as a host allowing a USB flash drive, mouse, or

keyboard to be attached and also connecting USB peripherals directly for communication purposes

among them.

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