STMicroelectronics 32L4R9IDISCOVERY - Compatible Connector for UART Grove Boards (Fanout CN2); Table 35. Description of the I2 C Grove Board Connector Pins (CN3); Table 36. Description of the UART Grove Board Connector Pins (CN2); Figure 35. Fanout Board (MB1280)

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UM2271 Fanout board (MB1280)
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E.3.2 Compatible connector for UART Grove boards (Fanout CN2)
The CN2 connector is compatible with Grove-NFC boards using cable for connection.
Table 36 shows the definition of the pins.
Table 35. Description of the I2C Grove board connector pins (CN3)
(1)
1. Please refer to Appendix C to check STMod+ pin sharing with other functions of the 32L4R9IDISCOVERY.
STMod+ connector NO. Function of Grove CN3 Pin number
STMod+#7-SCL SCL 1
STMod+#10-SDA SDA 2
STMod+#6#15 +5 V VCC 3
STMod+#5#16 GND GND 4
Table 36. Description of the UART Grove board connector pins (CN2)
(1)
1. Please refer to Appendix C to check STMod+ pin sharing with other functions of the 32L4R9IDISCOVERY.
STMod+ connector Function of Grove CN2 Pin number
STMod+#3-RX RX (Grove TX) 1
STMod+#2-TX TX (Grove RX) 2
STMod+#6#15 +5 V VCC 3
STMod+#5#16 GND GND 4