STMicroelectronics STM8S208S6T3C

Overview

STM8S208S6T3C from STMicroelectronics is an 8-bit high-performance microcontroller featuring a Harvard-architecture STM8 core, 24 MHz max CPU frequency, 32 KB Flash, 2 KB data EEPROM, 2 KB RAM, 10-bit ADC with 16 channels, two UARTs (one CAN-capable), SPI, I²C, and integrated CAN 2.0B controller - deployed in automotive body control modules for LIN/CAN gateway functions.

For engineers reviewing the STM8S208S6T3C datasheet, STM8S208S6T3C pinout, STM8S208S6T3C application, or STM8S208S6T3C equivalent, key selection criteria include CAN/LIN coexistence, SWIM single-wire debug support, 2.95–5.5 V wide supply range, 128 kHz/16 MHz internal RC oscillators, and LQFP44 package compatibility with industrial temperature-grade operation (−40 to +85 °C).

Technical Context

The STM8S208S6T3C implements a 3-stage pipelined Harvard-architecture core delivering up to 20 MIPS at 24 MHz, with nested interrupt controller supporting 32 interrupts and up to 37 external IRQs across 6 vectors. Its clock system integrates dual internal RC oscillators (128 kHz low-power and user-trimmable 16 MHz), crystal oscillator support, and clock security monitoring.

Peripheral integration includes beCAN 2.0B operating at 1 Mbit/s, UART3 with LIN 2.1 master/slave auto-resynchronization, 16-bit advanced control timer (TIM1) with dead-time insertion and complementary outputs, and 10-bit ADC with hardware-accelerated scan mode across 16 input channels - all accessible via configurable alternate function remapping on GPIO pins.

Key Specifications

Pinout & Package

LQFP44 (10 × 10 mm, 0.8 mm pitch) package with exposed thermal pad; 44-pin quad flat lead frame optimized for compact automotive and industrial PCB layouts requiring mixed-signal integration and EMI resilience.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-bit MCU with CAN/LIN applications.

Compared with STM8S208S6T3C, STM8S207R8T3 offers more memory and I/O but demands board redesign, while XC886CLM-8FF trades LIN hardware acceleration for raw speed - making STM8S208S6T3C optimal for cost-sensitive, space-constrained CAN+LIN edge nodes.

Availability

STM8S208S6T3C is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor hubs, smart power distribution, and home appliance motor control requiring stable component supply across extended lifecycle programs.

Supply support for STM8S208S6T3C includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power devices, sensors, and analog ICs for automotive, industrial, and consumer markets.

The STM8S series targets cost-sensitive, high-reliability embedded applications demanding CAN/LIN connectivity, robust flash/eeprom, and low-power operation - with STM8S208xx specifically engineered for automotive body electronics and industrial control nodes.

FAQ

Does STM8S208S6T3C support CAN FD?

No. The STM8S208S6T3C integrates only classical CAN 2.0B (ISO 11898-1), supporting up to 1 Mbit/s with 11-bit identifiers and standard data frames. It lacks CAN FD features such as flexible data-rate switching, extended identifiers (29-bit), or payload lengths beyond 8 bytes. For CAN FD, consider ST's SPC5 or STM32H7 families.

What is the maximum ADC sampling rate achievable with hardware triggers?

The 10-bit ADC achieves up to 1.1 MSPS maximum conversion rate when triggered by TIM4 update events in continuous scan mode, with acquisition time configured to minimum 1.5 ADCCLK cycles. At 24 MHz CPU clock and 16 MHz ADC clock (divided from HSI), this yields ≤0.91 µs per sample with 16-channel sequencing.

Can the internal 16 MHz RC oscillator be calibrated for improved accuracy?

Yes. The internal 16 MHz RC oscillator supports user trimming via the CLK_HSICALR register, allowing adjustment in ±1.5% steps across a ±8% total range. Calibration is typically performed once at production using an external reference clock, achieving ±1% accuracy over −40 to +85 °C after trimming.

Is SWIM debug compatible with third-party tools like ST-LINK/V2?

Yes. ST-LINK/V2 and compatible debug probes fully support SWIM protocol for STM8S208S6T3C, enabling programming, breakpoint debugging, and memory inspection. No additional adapter is required - the SWIM pin connects directly to ST-LINK's SWIM line (pin 7 on standard 4-pin connector).