STM32F102X4 Datasheet, PDF (20/69 Pages) STMicroelectronics – Low-density USB access line, ARM-based 32-bit MCU with 16/32 KB Flash, USB FS interface, 5 timers, ADC & 5 communication interfaces

Pinouts and pin description
STM32F102x4, STM32F102x6
Table 4.
Pins
low-density STM32F102xx pin definitions (continued)
Pin name
Main
function⁽³⁾
(after reset)
Alternate functions^{(3) (4)}
Default
Remap
21 29
22 30
23 31
24 32
25 33
26 34
27 35
28 36
- 37
- 38
- 39
- 40
29 41
30 42
31 43
32 44
33 45
34 46
35 47
36 48
37 49
38 50
- 51
- 52
- 53
- 54
39 55
40 56
41 57
PB10
PB11
V_{SS_1}
V_{DD_1}
PB12
PB13
PB14
PB15
PC6
PC7
PC8
PC9
PA8
PA9
PA10
PA11
PA12
PA13
V_{SS_2}
V_{DD_2}
PA14
PA15
PC10
PC11
PC12
PD2
PB3
PB4
PB5
I/O FT
I/O FT
PB10
PB11
(8)
TIM2_CH3
(8)
TIM2_CH4
S
V_{SS_1}
S
V_{DD_1}
I/O FT
PB12
(8)
I/O FT
PB13
I/O FT
PB14
I/O FT
PB15
I/O FT
PC6
TIM3_CH1
I/O FT
PC7
TIM3_CH2
I/O FT
PC8
TIM3_CH3
I/O FT
PC9
TIM3_CH4
I/O FT
I/O FT
I/O FT
PA8
PA9
PA10
USART1_CK/MCO
USART1_TX⁽⁸⁾
USART1_RX⁽⁸⁾
I/O FT
PA11
USART1_CTS/USBDM
I/O FT
PA12
USART1_RTS/USBDP
I/O FT JTMS-SWDIO
PA13
S
V_{SS_2}
S
V_{DD_2}
I/O FT JTCK/SWCLK
PA14
I/O FT
JTDI
TIM2_CH1_ETR/
PA15 /SPI_NSS
I/O FT
PC10
I/O FT
PC11
I/O FT
PC12
I/O FT
PD2
I/O FT
JTDO
TIM2_CH2/ PB3/
TRACESWO/
SPI_SCK
I/O FT JNTRST
TIM3_CH1 / PB4
SPI_MISO
I/O
PB5
I2C_SMBA
TIM3_CH2 /
SPI_MOSI
20/69
Doc ID 15057 Rev 3