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STM8L101F3P6

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STMicroelectronics Microcontrollers (MCU/MPU/SOC), TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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STM8L101F3P6

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

STM8L101F3P6 from STMicroelectronics, in a TSSOP-20. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 PC3/USART_TX bidirectional Port C3 is a high sink/source (20 mA) I/O that serves as the USART transmit output.
2 PC4/USART_CK/CCO bidirectional Port C4 is a high sink/source (20 mA) I/O that serves as the USART synchronous clock or the configurable clock output (CCO).
3 PA0/SWIM/BEEP/IR_TIM bidirectional Port A0 is in input pull-up during reset and after reset release, carries the SWIM input/output, Beep output and infrared timer output, and is the only pin with 20 mA high sink LED driver capability.
4 NRST/PA1 bidirectional At power-up this pin is a reset input with pull-up; as general purpose PA1 it can only be configured as push-pull output, not open-drain or general purpose input, and it is 20 mA high sink/source.
5 PA2 bidirectional Port A2 is a general purpose I/O with 20 mA high sink/source capability.
6 PA3 bidirectional Port A3 is a general purpose I/O with 20 mA high sink/source capability.
7 VSS power_in Ground reference pin for the device.
8 VDD power_in Power supply pin; the operating supply range of the device is 1.65 V to 3.6 V.
9 PD0/TIM3_CH2/COMP1_CH3 bidirectional Port D0 is a high sink/source (20 mA) I/O that serves as Timer 3 channel 2 or comparator 1 channel 3 input.
10 PB0/TIM2_CH1/COMP1_CH1 bidirectional Port B0 is a high sink/source (20 mA) I/O with a pull-up applied during reset, becoming input floating after reset release, and serves as Timer 2 channel 1 or comparator 1 channel 1.
11 PB1/TIM3_CH1/COMP1_CH2 bidirectional Port B1 is a high sink/source (20 mA) I/O that serves as Timer 3 channel 1 or comparator 1 channel 2.
12 PB2/TIM2_CH2/COMP2_CH1 bidirectional Port B2 is a high sink/source (20 mA) I/O that serves as Timer 2 channel 2 or comparator 2 channel 1.
13 PB3/TIM2_ETR/COMP2_CH2 bidirectional Port B3 is a high sink/source (20 mA) I/O that serves as Timer 2 trigger input or comparator 2 channel 2.
14 PB4/SPI_NSS bidirectional Port B4 is a high sink/source (20 mA) I/O with a pull-up applied during reset, becoming input floating after reset release, and serves as the SPI master/slave select.
15 PB5/SPI_SCK bidirectional Port B5 is a high sink/source (20 mA) I/O that serves as the SPI clock.
16 PB6/SPI_MOSI bidirectional Port B6 is a high sink/source (20 mA) I/O that serves as the SPI master out / slave in.
17 PB7/SPI_MISO bidirectional Port B7 is a high sink/source (20 mA) I/O that serves as the SPI master in / slave out.
18 PC0/I2C_SDA bidirectional Port C0 is a true open-drain I/O (no weak pull-up and no protection diode to VDD) that serves as the I2C data line.
19 PC1/I2C_SCL bidirectional Port C1 is a true open-drain I/O (no weak pull-up and no protection diode to VDD) that serves as the I2C clock line.
20 PC2/USART_RX bidirectional Port C2 is a high sink/source (20 mA) I/O that serves as the USART receive input.

Key specifications

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

CAD (KiCad official)

  • Symbol: STM8L101F3P6
  • Footprint: Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm
  • 3D model: TSSOP-20 (KiCad packages3D, STEP)
  • 3D model files: stm8l101f3p6-etched.step / stm8l101f3p6-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); stm8l101f3p6.step / stm8l101f3p6.glb are the bare package body.

Provenance

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

  • Datasheet: STMicroelectronics datasheet (83 pp, sha256 4f4c1c4df5129ba4, retrieved 2026-10-07, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (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