STMicroelectronics STM8S207MBT6BTR

Overview

STM8S207MBT6BTR from STMicroelectronics is an 8-bit high-performance microcontroller featuring a Harvard-architecture STM8 core, 128 KB Flash, 2 KB data EEPROM, 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, industrial motor drives, and smart sensor nodes requiring deterministic real-time response.

For engineers reviewing the STM8S207MBT6BTR datasheet, STM8S207MBT6BTR pinout, STM8S207MBT6BTR application, or STM8S207MBT6BTR equivalent, key selection criteria include CAN bus integration, SWIM single-wire debug support, 24 MHz max CPU frequency with zero wait states ≤16 MHz, and robust 68-pin LQFP I/O capability with 18 high-sink outputs.

Technical Context

The STM8S207MBT6BTR implements a 3-stage pipelined Harvard architecture core delivering up to 20 MIPS at 24 MHz, with nested interrupt controller supporting 32 interrupts and 37 external IRQ lines across 6 vectors. Its clock system integrates user-trimmable 16 MHz RC, low-power 128 kHz RC, and crystal oscillator with clock security monitoring.

Peripheral subsystems include an advanced 16-bit TIM1 timer with dead-time insertion and complementary outputs for motor control, dual 16-bit general-purpose timers (TIM2/TIM3), 8-bit basic timer (TIM4), window/independent watchdogs, and beCAN 2.0B interface operating at up to 1 Mbit/s with full protocol handling.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM8S207M8T6, STM8S207MBT6BTR provides double Flash capacity for secure OTA updates and larger RTOS partitions; versus STM8AF5288, it trades automotive qualification for lower unit cost and broader industrial availability.

Availability

STM8S207MBT6BTR is available at Aetrix Electronics and suitable for automotive body control units, industrial motor drives, smart sensor telemetry nodes, and programmable power supply monitors requiring stable component supply across multi-year production cycles.

Supply support for STM8S207MBT6BTR 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 industrial, automotive, and consumer markets.

The STM8S series targets cost-sensitive, real-time embedded applications demanding high reliability, integrated peripherals, and streamlined development - especially where CAN, LIN, or robust I/O drive capability is essential.

FAQ

Does STM8S207MBT6BTR support in-system programming via SWIM?

Yes. The device features a dedicated SWIM (Single Wire Interface Module) pin enabling full in-circuit programming and debugging using ST-LINK/V2 or compatible tools. No external bootloader is required - firmware can be updated directly through the SWIM interface at any voltage within the 2.95–5.5 V operating range.

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

The beCAN peripheral supports up to 1 Mbit/s bit rate with proper external transceiver and termination. This requires a minimum fCPU of 16 MHz (achievable with internal 16 MHz RC or external crystal), correct prescaler configuration, and bus length ≤40 m with 120 Ω termination at both ends.

How many independent PWM outputs can be generated simultaneously?

Up to 12 independent PWM outputs are possible: TIM1 provides 6 complementary PWM signals (3 high-side + 3 low-side), while TIM2 and TIM3 each deliver 2–3 additional PWM channels depending on configuration. All timers support center-aligned and edge-aligned modes with configurable dead time on TIM1.

Is the internal 16 MHz RC oscillator factory-trimmed and user-adjustable?

Yes. The internal high-speed RC oscillator is factory-trimmed to ±1% accuracy at 25 °C and 3.3 V, and users can further adjust it via the CLK_HSICALR register in steps of ±0.5% across a ±8% total range - enabling precise timing without external crystal in cost-sensitive applications.