STM32F334X4 datasheet(33/115 Pages) STMICROELECTRONICS

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STM32F334x4 STM32F334x6 STM32F334x8

Pinout and pin descriptions

Table 12. Legend/abbreviations used in the pinout table

Name

Abbreviation

Definition

Pin name

Unless otherwise specified in brackets below the pin name, the pin function during and

after reset is the same as the actual pin name

Pin type

Supply pin

Input only pin

I/O

Input / output pin

I/O structure

5 V tolerant I/O

FTf

5 V tolerant I/O, FM+ capable

TTa

3.3 V tolerant I/O directly connected to ADC

3.3 V tolerant I/O

Standard 3.3 V I/O

Dedicated BOOT0 pin

RST

Bi-directional reset pin with embedded weak pull-up resistor

Notes

Unless otherwise specified by a note, all I/Os are set as floating inputs during and after

reset

functions

Alternate

functions

Functions selected through GPIOx_AFR registers

Additional

functions

Functions directly selected/enabled through peripheral registers

Table 13. STM32F334x4/6/8 pin definitions

Pin Number

Pin name (function

after reset)

Pin functions

LQFP

Alternate

functions

Additional functions

VBAT

Backup power supply

-2

PC13(1)

I/O

TIM1_CH1N

RTC_TAMP1/RTC_TS/

RTC_OUT/WKUP2

PC14 / OSC32_IN(1)

I/O

OSC32_IN

PC15 / OSC32_OUT(1)

I/O

OSC32_OUT

PF0 / OSC_IN

I/O

TIM1_CH3N

OSC_IN

PF1 / OSC_OUT

I/O

OSC_OUT

NRST

I/O

RST

Device reset input / internal reset output

(active low)

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