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Contents

README

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STM8L050J3M3TR

STMicroelectronics · Microcontrollers (MCU/MPU/SOC) · SOP-8-150mil

STM8L050J3M3TR from STMicroelectronics, in a SOP-8-150mil. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 PA0/PA2/PC6 bidirectional Multi-function I/O port with PA0 as SWIM debug input/output, USART synchronous clock, beeper output, or IR timer output; PA2 as HSE oscillator input, USART transmit, or SPI MISO; PC6 as LSE oscillator output, SPI clock, USART receive, or Timer2 channel 2; operating voltage 1.8-3.6 V.
2 PA3 bidirectional I/O port PA3 functioning as HSE oscillator output or alternate USART receive and SPI master-out slave-in; operating voltage 1.8-3.6 V with high sink capability.
3 VSS power_in Ground voltage supply; VSS1, VSSA, and VREF- (ADC negative reference) connected; external ground must be connected to external power supply for core, I/O, and analog circuits.
4 VDD power_in Positive supply voltage 1.8-3.6 V for core and peripherals; VDDA and VREF+ (ADC positive reference) internally bonded; must be connected to external power supply.
5 PB3/PB5/PD0 bidirectional Multi-function I/O port with PB3 as Timer2 external trigger, ADC input 15, RTC alarm, or Comparator1 positive input; PB5 as SPI clock, ADC input 13, or Comparator1 positive input; PD0 as Timer3 channel 2, ADC trigger/input 22, or Comparator1/2 positive input; operating voltage 1.8-3.6 V with high sink capability.
6 PB6 bidirectional I/O port PB6 functioning as SPI master-out slave-in, ADC input 12, or Comparator1 positive input; operating voltage 1.8-3.6 V with high sink capability.
7 PB7/PC0 bidirectional Multi-function I/O port with PB7 as SPI master-in slave-out, ADC input 11, or Comparator1 positive input; PC0 as I2C data (SDA) with true open-drain output; operating voltage 1.8-3.6 V.
8 PC1/PC4/PC5 bidirectional Multi-function I/O port with PC1 as I2C clock (SCL) true open-drain; PC4 as USART synchronous clock, I2C SMBus, configurable clock output, ADC input 4, or Comparator1/2 input; PC5 as LSE oscillator input, SPI NSS, USART transmit, or Timer2 channel 1; operating voltage 1.8-3.6 V with high sink capability.

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package SOP-8-150mil
Category Embedded Processors & Controllers
Pins 8

CAD (KiCad official)

  • Symbol: STM8L050J3M3TR
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOP-8-150mil (KiCad packages3D, STEP)
  • 3D model files: stm8l050j3m3tr-etched.step / stm8l050j3m3tr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); stm8l050j3m3tr.step / stm8l050j3m3tr.glb are the bare package body.

Provenance

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

  • Datasheet: STMicroelectronics datasheet (94 pp, sha256 f37f7fea1aa7e91c, retrieved 2026-09-23, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.2, primary claude-haiku-4-5-20251001 (text), consensus claude-sonnet-5 (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