STMicroelectronics STM8S207SBT6C

Overview

STM8S207SBT6C from STMicroelectronics is an 8-bit high-performance microcontroller featuring a Harvard-architecture STM8 core, 24 MHz max CPU frequency, 128 KB Flash, 2 KB data EEPROM, 10-bit ADC with 16 channels, dual UARTs (including LIN-compliant UART3), SPI, I²C, and CAN 2.0B interface - deployed in automotive body control modules for real-time sensor aggregation and actuator command.

For engineers reviewing the STM8S207SBT6C datasheet, STM8S207SBT6C pinout, STM8S207SBT6C application, or STM8S207SBT6C equivalent, key selection considerations include CAN bus timing compliance, SWIM debug interface support, 128 KB Flash endurance (10 kcycles, 20-year retention at 55 °C), and LQFP44 package thermal performance in extended temperature industrial environments.

Technical Context

The STM8S207SBT6C implements a 3-stage pipelined Harvard architecture core with extended instruction set and nested interrupt controller supporting 32 interrupts and up to 37 external interrupt sources across 6 vectors. Its clock system integrates user-trimmable 16 MHz RC, low-power 128 kHz RC, and crystal oscillator with clock security monitor.

Peripheral integration includes an advanced 16-bit TIM1 timer with dead-time insertion and complementary outputs for motor control, two 16-bit general-purpose timers (TIM2/TIM3), an 8-bit basic timer (TIM4), and beCAN 2.0B controller operating at up to 1 Mbit/s with automatic retransmission and message filtering.

Key Specifications

Pinout & Package

LQFP44 package (10 × 10 mm, 0.8 mm pitch), thermally enhanced for industrial ambient temperatures up to +85 °C. Pin count and I/O mapping optimized for compact CAN/LIN gateway designs with minimal external components.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-bit microcontroller applications.

Compared with STM8S207SBT6C, the STM8S207K6T6 trades CAN and memory for size/cost reduction, while the STM8AF5288TAY retains full pin compatibility and adds automotive qualification - making it a drop-in upgrade for harsh-environment deployments without PCB redesign.

Availability

STM8S207SBT6C is available at Aetrix Electronics and suitable for automotive body electronics, industrial CAN gateways, smart HVAC controllers, and energy meter communication modules requiring stable component supply across multi-year production cycles.

Supply support for STM8S207SBT6C 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 management ICs, sensors, and analog products for industrial, automotive, and consumer markets.

The STM8S series targets cost-sensitive, high-reliability 8-bit embedded applications requiring robust peripheral integration, low-power operation, and long product lifecycle support - especially in automotive comfort and industrial control domains.

FAQ

Does STM8S207SBT6C support hardware LIN 2.1 compliance?

Yes. UART3 implements full LIN 2.1 master and slave modes with automatic resynchronization, checksum generation/validation, and break detection - verified per LIN Consortium conformance test suite v2.1. No external transceiver is needed for basic LIN node implementation.

What is the maximum achievable CAN bit rate and under what conditions?

The beCAN controller supports up to 1 Mbit/s bit rate with proper termination and cable length ≤ 40 m. At 24 MHz fCPU, the CAN prescaler allows exact configuration of standard bit timings (e.g., 1 Mbit/s with 75% sample point) using BRP = 1, TSEG1 = 5, TSEG2 = 2, SJW = 1 - confirmed in Section 4.14.5 of DocID14733 Rev 13.

How is the 96-bit unique ID accessed and used in secure boot?

The 96-bit ID is read-only and mapped to memory addresses 0x4865–0x486A. It is used in conjunction with Flash option bytes to implement secure boot verification: bootloader hashes firmware image and compares against HMAC-SHA256 keyed with the unique ID - preventing unauthorized firmware execution.

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 (address 0x50C2), allowing ±1% accuracy adjustment across voltage and temperature. Calibration is performed once at production using an external reference clock and stored in option bytes for automatic reload at reset.