STMicroelectronics STM8S207M8T6B

Overview

STM8S207M8T6B from STMicroelectronics is an 8-bit high-performance microcontroller featuring a Harvard-architecture STM8 core, 24 MHz max CPU frequency (0 wait states ≤16 MHz), 128 KB Flash, 2 KB data EEPROM, 6 KB RAM, integrated CAN 2.0B controller, dual UARTs with LIN support, SPI, I²C, and 10-bit ADC with up to 16 channels - deployed in automotive body control modules and industrial motor drive supervision.

For engineers reviewing the STM8S207M8T6B datasheet, STM8S207M8T6B pinout, STM8S207M8T6B application, or STM8S207M8T6B equivalent, key selection criteria include CAN interface timing compliance, SWIM debug accessibility, low-power active-halt mode current (<1.5 µA at 3.3 V), and LQFP80 package I/O count (68 pins, 18 high-sink) for multi-peripheral system integration.

Technical Context

The STM8S207M8T6B implements a 3-stage pipelined STM8 core with extended instruction set and nested interrupt controller supporting 32 interrupts and up to 37 external IRQs 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 architecture 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 operating at up to 1 Mbit/s - all individually gated via CLK_PCKENR registers to minimize dynamic power.

Key Specifications

Pinout & Package

LQFP80 (14 × 14 mm, 0.5 mm pitch) package with exposed thermal pad; RoHS-compliant, rated for industrial temperature range (–40 °C to +85 °C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM8S207M8T6B, STM8S208MB strengthens data reliability in harsh environments while maintaining pin and code compatibility, whereas STM32F042F6P6 trades CAN integration for USB capability and higher performance - demanding architectural redesign but enabling new connectivity paradigms.

Availability

STM8S207M8T6B is available at Aetrix Electronics and suitable for automotive body electronics, industrial motor control, smart HVAC systems, and energy metering nodes requiring stable component supply across extended product lifecycles.

Supply support for STM8S207M8T6B 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 automotive-grade silicon for industrial and automotive markets.

The STM8S Performance line targets cost-sensitive, high-reliability embedded control applications - emphasizing robust I/O, integrated analog peripherals, and ultra-low-power modes for battery-operated and thermally constrained systems.

FAQ

Does STM8S207M8T6B support in-application programming (IAP) of Flash memory?

Yes. The device supports IAP via its built-in bootloader accessed through UART or SWIM interface. Flash sectors can be erased and rewritten under firmware control using standard ST-provided library functions, enabling field firmware upgrades without external programmers. Write endurance is rated at 10,000 cycles with 20-year data retention at 55 °C.

What is the maximum allowed crystal frequency for the HSE oscillator?

The external high-speed crystal oscillator (HSE) supports frequencies from 1 MHz to 24 MHz, with recommended load capacitance of 12–22 pF depending on crystal specifications. At 24 MHz, the device achieves full 24 MHz CPU operation with zero wait states, provided VDD ≥ 4.5 V per electrical characteristics table 18.

How many CAN message objects does the beCAN peripheral support?

The beCAN controller implements 16 message objects (mailboxes) with individual acceptance filters, transmit/receive FIFOs, and automatic retransmission logic. Each object supports standard (11-bit) or extended (29-bit) identifiers and configurable data length (0–8 bytes), enabling concurrent handling of multiple CAN IDs in automotive network gateways.

Is the 96-bit unique ID accessible via standard debug interfaces?

Yes. The 96-bit unique ID is mapped to memory-mapped registers (UIDR1–UIDR3) and readable via SWIM or standard debug probes during development or production testing. It is factory-programmed, read-only, and unaffected by Flash erase operations - making it suitable for secure device binding and cryptographic key derivation.