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Contents

README

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STM8S208C6T6

STMicroelectronics · Microcontrollers (MCU/MPU/SOC) · LQFP-48(7x7)

STM8S208C6T6 from STMicroelectronics, in a LQFP-48(7x7). 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 NRST bidirectional Reset pin (I/O); its reset-pin electrical characteristics are specified in Section 10.3.7 of the datasheet.
2 PA1/OSCIN bidirectional Port A1 I/O that doubles as the resonator/crystal oscillator input (OSCIN), with slow output speed O1 (up to 2 MHz).
3 PA2/OSCOUT bidirectional Port A2 I/O that doubles as the resonator/crystal oscillator output (OSCOUT), with slow output speed O1 (up to 2 MHz).
4 VSSIO_1 power_in I/O ground.
5 VSS power_in Digital ground.
6 VCAP power_out 1.8 V regulator capacitor connection; the external VCAP capacitor requirements are given in Section 10.3.1.
7 VDD power_in Digital power supply, 2.95 V to 5.5 V operating voltage.
8 VDDIO_1 power_in I/O power supply.
9 PA3/TIM2_CH3 bidirectional Port A3 I/O; default alternate function is Timer 2 channel 3, remappable to TIM3_CH1 via option bits AFR1.
10 PA4/UART1_RX bidirectional Port A4 I/O with high sink capability, used as UART1 receive; its default state is controlled by the ROM bootloader.
11 PA5/UART1_TX bidirectional Port A5 I/O with high sink capability, used as UART1 transmit.
12 PA6/UART1_CK bidirectional Port A6 I/O with high sink capability, used as UART1 synchronous clock.
13 VDDA power_in Analog power supply.
14 VSSA power_in Analog ground.
15 PB7/AIN7 bidirectional Port B7 I/O, ADC analog input 7.
16 PB6/AIN6 bidirectional Port B6 I/O, ADC analog input 6.
17 PB5/AIN5 bidirectional Port B5 I/O, ADC analog input 5; I2C_SDA is available as remapped alternate function (AFR6).
18 PB4/AIN4 bidirectional Port B4 I/O, ADC analog input 4; I2C_SCL is available as remapped alternate function (AFR6).
19 PB3/AIN3 bidirectional Port B3 I/O, ADC analog input 3; TIM1_ETR is available as remapped alternate function (AFR5).
20 PB2/AIN2 bidirectional Port B2 I/O, ADC analog input 2; TIM1_CH3N is available as remapped alternate function (AFR5).
21 PB1/AIN1 bidirectional Port B1 I/O, ADC analog input 1; TIM1_CH2N is available as remapped alternate function (AFR5).
22 PB0/AIN0 bidirectional Port B0 I/O, ADC analog input 0; TIM1_CH1N is available as remapped alternate function (AFR5).
23 PE7/AIN8 bidirectional Port E7 I/O, ADC analog input 8.
24 PE6/AIN9 bidirectional Port E6 I/O, ADC analog input 9.
25 PE5/SPI_NSS bidirectional Port E5 I/O, SPI master/slave select.
26 PC1/TIM1_CH1 bidirectional Port C1 I/O with high sink capability, Timer 1 channel 1.
27 PC2/TIM1_CH2 bidirectional Port C2 I/O with high sink capability, Timer 1 channel 2.
28 PC3/TIM1_CH3 bidirectional Port C3 I/O with high sink capability, Timer 1 channel 3.
29 PC4/TIM1_CH4 bidirectional Port C4 I/O with high sink capability, Timer 1 channel 4.
30 PC5/SPI_SCK bidirectional Port C5 I/O with high sink capability, SPI clock.
31 VSSIO_2 power_in I/O ground.
32 VDDIO_2 power_in I/O power supply.
33 PC6/SPI_MOSI bidirectional Port C6 I/O with high sink capability, SPI master out / slave in.
34 PC7/SPI_MISO bidirectional Port C7 I/O with high sink capability, SPI master in / slave out.
35 PG0/CAN_TX bidirectional Port G0 I/O, beCAN transmit (available on STM8S208xx devices only).
36 PG1/CAN_RX bidirectional Port G1 I/O, beCAN receive (available on STM8S208xx devices only).
37 PE3/TIM1_BKIN bidirectional Port E3 I/O, Timer 1 break input.
38 PE2/I2C_SDA bidirectional Port E2 true open-drain I/O (P-buffer and protection diode to VDD not implemented) used as I2C data.
39 PE1/I2C_SCL bidirectional Port E1 true open-drain I/O (P-buffer and protection diode to VDD not implemented) used as I2C clock.
40 PE0/CLK_CCO bidirectional Port E0 I/O with high sink capability, configurable clock output.
41 PD0/TIM3_CH2 bidirectional Port D0 I/O with high sink capability, Timer 3 channel 2; TIM1_BKIN (AFR3) and CLK_CCO (AFR2) are remappable alternate functions.
42 PD1/SWIM bidirectional Port D1 I/O with high sink capability, SWIM data interface; it is in input pull-up during the reset phase and after internal reset release.
43 PD2/TIM3_CH1 bidirectional Port D2 I/O with high sink capability, Timer 3 channel 1; TIM2_CH3 is a remappable alternate function (AFR1).
44 PD3/TIM2_CH2 bidirectional Port D3 I/O with high sink capability, Timer 2 channel 2; ADC_ETR is a remappable alternate function (AFR0).
45 PD4/TIM2_CH1/BEEP bidirectional Port D4 I/O with high sink capability, Timer 2 channel 1; BEEP output is a remappable alternate function (AFR7).
46 PD5/UART3_TX bidirectional Port D5 I/O, UART3 data transmit.
47 PD6/UART3_RX bidirectional Port D6 I/O, UART3 data receive; its default state is controlled by the ROM bootloader and it returns to floating before a return from the bootloader.
48 PD7/TLI bidirectional Port D7 I/O, top level interrupt (TLI).

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package LQFP-48(7x7)
Category Embedded Processors & Controllers
Pins 48

CAD (KiCad official)

  • Symbol: STM8S208C6T6
  • Footprint: Package_QFP:LQFP-48_7x7mm_P0.5mm
  • 3D model: LQFP-48(7x7) (KiCad packages3D, STEP)
  • 3D model files: stm8s208c6t6-etched.step / stm8s208c6t6-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); stm8s208c6t6.step / stm8s208c6t6.glb are the bare package body.

Provenance

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

  • Datasheet: STMicroelectronics datasheet (117 pp, sha256 7adeaa849cf9e22f, 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