STMicroelectronics STM32F042F4 Manual page 34

Pinouts and pin descriptions
Pin numbers
26 - - -
27 - - -
28 - - -
29 E2 18 18
30 D1 19 19
31 C1 20 20
32 C2 21 21 19
33 A1 22 22 20
34 B1 23 23
35 - - -
36 E1 17 17
37 B2 24 24
34/117
Table 13. STM32F042x pin definitions (continued)
Pin name
(function upon
reset)
- - PB13
- - PB14
- - PB15
- - PA8
19 17 PA9
20 18 PA10
(5) (5)
17 PA11
(5) (5)
18 PA12
21 19 PA13
- - VSS
18 16 VDDIO2
22 20 PA14
DocID025832 Rev 5
Pin
type
Alternate function
I/O FTf -
I/O FTf -
I/O FT -
(4)
I/O FT
EVENTOUT, MCO,
(4)
I/O FTf
TSC_G4_IO1,
(4)
I/O FTf
TSC_G4_IO2,
USART1_CTS,
(4)
I/O FTf
TSC_G4_IO3,
CAN_TX,USART1_RTS,
(4)
I/O FTf TSC_G4_IO4,
(4)
IR_OUT, SWDIO
I/O FT
(6)
S - -
S - -
(4)
I/O FT USART2_TX, SWCLK
(6)
STM32F042x4 STM32F042x6
Pin functions
Additional
functions
SPI2_SCK,
TIM1_CH1N,
I2C1_SCL
SPI2_MISO,
TIM1_CH2N,
I2C1_SDA
SPI2_MOSI, WKUP7,
TIM1_CH3N RTC_REFIN
USART1_CK,
TIM1_CH1,
CRS_SYNC
USART1_TX,
TIM1_CH2,
I2C1_SCL
USART1_RX,
TIM1_CH3,
TIM17_BKIN,
I2C1_SDA
CAN_RX,
TIM1_CH4,
USB_DM
EVENTOUT,
I2C1_SCL
TIM1_ETR,
USB_DP
EVENTOUT,
I2C1_SDA
USB_NOE
Ground
Digital power supply
-
-
-
-
-
-
-