STMicroelectronics STM8S207RBT3

Overview

STM8S207RBT3 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 (one CAN-capable), SPI, I²C, and advanced timer peripherals including TIM1 with dead-time insertion. It targets automotive body control modules requiring CAN 2.0B communication, robust I/O, and low-power operation.

For engineers reviewing the STM8S207RBT3 datasheet, STM8S207RBT3 pinout, STM8S207RBT3 application, or STM8S207RBT3 equivalent, key selection considerations include its LQFP64 package with 54 general-purpose I/Os (18 high-sink), integrated beCAN 2.0B controller, SWIM single-wire debug interface, and support for LIN 2.1 master/slave modes in UART3.

Technical Context

The STM8S207RBT3 implements an enhanced STM8 core with 3-stage pipeline and extended instruction set, delivering up to 20 MIPS at 24 MHz with zero wait states below 16 MHz. Its clock system integrates user-trimmable 16 MHz RC, low-power 128 kHz RC, and external crystal/resonator support with clock security monitoring.

Interrupt handling uses a nested controller supporting 32 vectors and up to 37 external interrupts across six priority levels. Peripheral clock gating enables fine-grained power control, while the advanced TIM1 timer provides complementary PWM outputs with programmable dead-time for motor control and power conversion applications.

Key Specifications

Pinout & Package

LQFP64 (10 × 10 mm, 0.5 mm pitch) package with exposed thermal pad; 64-pin quad flat lead frame optimized for industrial and automotive PCB layouts with controlled impedance routing support.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM8S208RBT3, STM8S207RBT3 trades USB for lower cost and identical CAN/LIN feature depth; versus STM32F042K6T6, it delivers superior out-of-box CAN 2.0B compliance and smaller memory footprint for resource-constrained embedded control.

Availability

STM8S207RBT3 is available at Aetrix Electronics and suitable for automotive body electronics, industrial motor interfaces, smart energy meters, and medical infusion pump controllers requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-aligned reliability.

Supply support for STM8S207RBT3 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 ICs, sensors, and analog components for industrial, automotive, and consumer markets.

The STM8S series targets cost-sensitive, high-reliability 8-bit applications demanding CAN/LIN connectivity, robust I/O, and ultra-low-power operation - particularly in automotive body electronics and industrial control subsystems.

FAQ

Does STM8S207RBT3 support CAN FD?

No. The STM8S207RBT3 integrates only classic beCAN 2.0B (ISO 11898-1), supporting up to 1 Mbit/s with standard 11-bit or extended 29-bit identifiers. It lacks CAN FD features such as flexible data-rate switching, larger payload (up to 64 bytes), or CRC enhancements. For CAN FD, consider ST's STM32G4 or SPC5 families.

What is the maximum operating temperature range for STM8S207RBT3?

The STM8S207RBT3 is specified for industrial temperature range: –40 °C to +85 °C ambient. Electrical characteristics including Flash endurance, ADC accuracy, and I/O drive strength are guaranteed across this full range. It is not qualified to AEC-Q100 automotive grade but widely deployed in automotive body applications with derating.

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

Yes. The internal 16 MHz RC oscillator is user-trimmable via the CLK_HSICALR register (address 0x50C0), allowing ±2% calibration across VDD and temperature. Calibration is performed during production test and stored in option bytes; users may adjust it in-system using SWIM or bootloader for applications requiring tighter timing tolerance than default ±5%.

Is there hardware support for cryptographic operations?

No. The STM8S207RBT3 does not include dedicated cryptographic accelerators (AES, SHA, RNG) or secure boot hardware. Security relies on software-implemented algorithms, Flash option byte protection, and the 96-bit unique ID for device binding. For hardware crypto, ST's STM32L4 or STM32H7 series provide TRNG, AES-128/256, and PKA engines.