STM32F042F4 datasheet(32/117 Pages) STMICROELECTRONICS

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Pinouts and pin descriptions

STM32F042x4 STM32F042x6

32/117

DocID025832 Rev 5

Table 13. STM32F042x pin definitions

Pin numbers

Pin name

(function upon

reset)

type

Pin functions

Alternate function

Additional

functions

VBAT

Backup power supply

2A6

PC13

I/O

(1)

(2)

WKUP2,

RTC_TAMP1,

RTC_TS,

RTC_OUT

3B6

PC14-

OSC32_IN

(PC14)

I/O

(1)

(2)

OSC32_IN

4C6

PC15-

OSC32_OUT

(PC15)

I/O

(1)

(2)

OSC32_OUT

5B5

PF0-OSC_IN

(PF0)

I/O

FTf

CRS_ SYNC

I2C1_SDA

OSC_IN

6C5

PF1-OSC_OUT

(PF1)

I/O

FTf

I2C1_SCL

OSC_OUT

NRST

I/O

RST

Device reset input / internal reset output

(active low)

VSSA

(3)

Analog ground

9E5

VDDA

Analog power supply

PA0

I/O

TTa

USART2_CTS,

TIM2_CH1_ETR,

TSC_G1_IO1

RTC_

TAMP2,

WKUP1,

ADC_IN0,

PA1

I/O

TTa

USART2_RTS,

TIM2_CH2,

TSC_G1_IO2,

EVENTOUT

ADC_IN1

PA2

I/O

TTa

USART2_TX,

TIM2_CH3,

TSC_G1_IO3

ADC_IN2,

WKUP4

PA3

I/O

TTa

USART2_RX,

TIM2_CH4,

TSC_G1_IO4

ADC_IN3

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