2.3.18
Audio Jack (CN24)
Pin
Signal
1
MIC_LR_CN
3
LOUT_R
5
NC
7
NC
2.3.19
STM32 MCU (CN25)
Pin
Signal
1
+3V_MCU
3
GND
5
STM32_PB1
7
STM32_PB7
9
STM32_PB6
11
STM32_PB5
13
STM32_PB4
15
STM32_PB3
17
USB_RENUMn
Chapter 2 – Hardware Information
Pin
Signal
2
AGND
4
NC
6
NC
8
LOUT_L
Pin
Signal
2
+3V_MCU
4
GND
6
STM32_VBAT
8
STM32_PC8
10
STM32_PB9
12
STM32_PC15
14
MCU_NRST_R
16
MCU_WKUP_R
18
STM32_PA1
26