component

STM32F042F4P6

Public Made by Adom

by adom

STMicroelectronics Microcontrollers (MCU/MPU/SOC), TSSOP-20. Pinout checked against ST's open pin data, KiCad symbol/footprint/3D.

componentembedded processors & controllersstm32f042f4p6factory-2.0.0extractor-text
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity

3D Model

Open in new tab ↗
Loads on click. Unloads only if this page sits in the background.

Symbol & Footprint

Schematic Symbol

Open full view ↗
Loads on click. Unloads only if this page sits in the background.

PCB Footprint

Open full view ↗
Loads on click. Unloads only if this page sits in the background.

Datasheet

Open in new tab ↗
Loads on click. Unloads only if this page sits in the background.
Download PDF
Contents

README

markdown

STM32F042F4P6

STMicroelectronics · Microcontrollers (MCU/MPU/SOC) · TSSOP-20

STM32F042F4P6 from STMicroelectronics, in a TSSOP-20. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model, then checked against ST open pin data); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 PB8 bidirectional 5V-tolerant FM+-capable (FTf) I/O; doubles as BOOT0 boot-memory-selection input; alternate functions I2C1_SCL, CEC, TIM16_CH1, TSC_SYNC, CAN_RX.
2 PF0-OSC_IN bidirectional 5V-tolerant FM+-capable (FTf) I/O; default GPIO PF0 after reset; additional function OSC_IN (HSE crystal input, 4-32 MHz); alternate functions CRS_SYNC (AF0), I2C1_SDA (AF1).
3 PF1-OSC_OUT bidirectional 5V-tolerant FM+-capable (FTf) I/O; default GPIO PF1 after reset; additional function OSC_OUT (HSE crystal output); alternate function I2C1_SCL (AF1).
4 NRST input Active-low device reset input / internal reset output with embedded 25-55 kΩ pull-up resistor; input pulses shorter than 100 ns are filtered and not recognised as reset.
5 VDDA power_in Analog power supply 2.0-3.6 V (minimum 2.4 V when ADC is used); must be ≥ VDD; powers ADC, internal oscillators, PLL, and voltage reference.
6 PA0 bidirectional 3.3V-tolerant (TTa) analog-capable I/O; alternate functions USART2_CTS, TIM2_CH1_ETR, TSC_G1_IO1; additional functions WKUP1, RTC_TAMP2, ADC_IN0.
7 PA1 bidirectional 3.3V-tolerant (TTa) analog-capable I/O; input range 0 V to VDDA; alternate functions USART2_RTS, TIM2_CH2, TSC_G1_IO2, EVENTOUT; additional function ADC_IN1.
8 PA2 bidirectional 3.3V-tolerant (TTa) analog-capable I/O; alternate functions USART2_TX, TIM2_CH3, TSC_G1_IO3; additional functions ADC_IN2, WKUP4.
9 PA3 bidirectional 3.3V-tolerant (TTa) analog-capable I/O; alternate functions USART2_RX, TIM2_CH4, TSC_G1_IO4; additional function ADC_IN3.
10 PA4 bidirectional 3.3V-tolerant (TTa) analog-capable I/O; alternate functions SPI1_NSS/I2S1_WS, TIM14_CH1, TSC_G2_IO1, USART2_CK; additional functions USB_NOE, ADC_IN4.
11 PA5 bidirectional 3.3V-tolerant (TTa) analog-capable I/O; alternate functions SPI1_SCK/I2S1_CK, CEC, TIM2_CH1_ETR, TSC_G2_IO2; additional function ADC_IN5.
12 PA6 bidirectional 3.3V-tolerant (TTa) analog-capable I/O; alternate functions SPI1_MISO/I2S1_MCK, TIM3_CH1, TIM1_BKIN, TIM16_CH1, TSC_G2_IO3, EVENTOUT; additional function ADC_IN6.
13 PA7 bidirectional 3.3V-tolerant (TTa) analog-capable I/O; alternate functions SPI1_MOSI/I2S1_SD, TIM3_CH2, TIM14_CH1, TIM1_CH1N, TIM17_CH1, TSC_G2_IO4, EVENTOUT; additional function ADC_IN7.
14 PB1 bidirectional 3.3V-tolerant (TTa) analog-capable I/O; alternate functions TIM3_CH4, TIM14_CH1, TIM1_CH3N, TSC_G3_IO3; additional function ADC_IN9.
15 VSSA power_in
16 VDD power_in 2.0-3.6 V main digital power supply; on TSSOP20 both VDD and VDDIO2 table entries map to this single pin, so VDDIO2-supplied I/Os (PA9, PA10, PA13, PA14) are also powered from here.
17 PA9 bidirectional 5V-tolerant FM+-capable (FTf) I/O supplied by VDDIO2; default PA9 (USART1_TX, TIM1_CH2, TSC_G4_IO1, I2C1_SCL); remappable to PA11 (CAN_RX, USART1_CTS, TIM1_CH4, USB_DM) via SYSCFG_CFGR1.
18 PA10 bidirectional 5V-tolerant FM+-capable (FTf) I/O supplied by VDDIO2; default PA10 (USART1_RX, TIM1_CH3, TIM17_BKIN, TSC_G4_IO2, I2C1_SDA); remappable to PA12 (CAN_TX, USART1_RTS, TIM1_ETR, USB_DP) via SYSCFG_CFGR1.
19 PA13 bidirectional 5V-tolerant (FT) I/O supplied by VDDIO2; configured as SWDIO (internal pull-up activated) after reset; alternate functions IR_OUT (AF1), USB_NOE (AF2).
20 PA14 bidirectional 5V-tolerant (FT) I/O supplied by VDDIO2; configured as SWCLK (internal pull-down activated) after reset; alternate function USART2_TX (AF1).

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package TSSOP-20
Category Embedded Processors & Controllers
Pins 20

CAD (KiCad official)

  • Symbol: STM32F042F4P6
  • Footprint: Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm
  • 3D model: TSSOP-20 (KiCad packages3D, STEP)
  • 3D model files: stm32f042f4p6-etched.step / stm32f042f4p6-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); stm32f042f4p6.step / stm32f042f4p6.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: STMicroelectronics datasheet (117 pp, sha256 7af7ec8f5a596b23, retrieved 2026-09-26, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.2, primary claude-haiku-4-5-20251001 (text), consensus claude-sonnet-4-6 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF