ST B-L4S5I-IOT01A - Page 34

Pin number Pin name Feature / comment Signal / label
37 PB2 GPIO_Output ARD.D8
38 PE7 MEMS microphone DFSDM1_DATIN2
39 PE8 GPIO_Output ISM43362-RST
40 PE9 MEMS microphone DFSDM1_CKOUT
41 PE10 QSPI NOR Flash memory QUADSPI_CLK
42 PE11 QSPI NOR Flash memory QUADSPI_NCS
43 PE12 QSPI NOR Flash memory QUADSPI_BK1_IO0
44 PE13 QSPI NOR Flash memory QUADSPI_BK1_IO1
45 PE14 QSPI NOR Flash memory QUADSPI_BK1_IO2
46 PE15 QSPI NOR Flash memory QUADSPI_BK1_IO3
47 PB10 I2C2_SCL INTERNAL-I2C2_SCL
48 PB11 I2C2_SDA INTERNAL-I2C2_SDA
49
V
SS
GND
V
SS
50
V
DD
3.3 V
V
DD_MCU
51 PB12 GPIO_Output ISM43362-BOOT0
52 PB13 GPIO_Output ISM43362-WAKEUP
53 PB14 GPIO_Output LED2
54 PB15 GPIO_Output SPSGRF-915-SDN
55 PD8 USART3_TX INTERNAL-UART3_TX
56 PD9 USART3_RX INTERNAL-UART3_RX
57 PD10 GPIO_EXTI10 LPS22HB_INT_DRDY_EXTI10
58 PD11 GPIO_EXTI11 LSM6DSL_INT1_EXTI11
59 PD12 GPIO_EXTI12 USB_OTG_FS_PWR_EN
60 PD13 GPIO_Output SPBTLE-RF-SPI3_CSN
61 PD14 GPIO_EXTI14 ARD.D2-INT0_EXTI14
62 PD15 GPIO_EXTI15 HTS221_DRDY_EXTI15
63 PC6 GPIO_Output VL53L0X_XSHUT
64 PC7 GPIO_EXTI17 VL53L0X_GPIO1_EXTI7
65 PC8 GPIO_EXTI18 LIS3MDL_DRDY_EXTI8
66 PC9 GPIO_EXTI9
LED3 (Wi‑Fi
®
) & LED4 (BLE)
67 PA8 GPIO_Output SPBTLE-RF-RST
68 PA9 USB_OTG USB_OTG_FS_VBUS
69 PA10 USB_OTG USB_OTG_FS_ID
70 PA11 USB_OTG USB_OTG_FS_DM
71 PA12 USB_OTG USB_OTG_FS_DP
72 PA13 ST-LINK SYS_JTMS-SWDIO
73
V
DDUSB
3.3 V
V
DD_MCU
74
V
SS
GND GND
75
V
DD
3.3 V
V
DD_MCU
76 PA14 ST-LINK SYS_JTCK-SWCLK
UM2708
B-L4S5I-IOT01A Discovery kit for the IoT node I/O assignment
UM2708 - Rev 1
page 34/43