STMicroelectronics STM8S207R8T6TR

Overview

STM8S207R8T6TR from STMicroelectronics is an 8-bit high-performance microcontroller featuring a Harvard-architecture STM8 core, 24 MHz max CPU frequency, 64 KB Flash, 2 KB data EEPROM, 6 KB RAM, 10-bit ADC (16 channels), two UARTs (one with LIN 2.1 support), SPI, I²C, and a CAN 2.0B interface - deployed in industrial motor control and automotive body electronics.

For engineers reviewing the STM8S207R8T6TR datasheet, STM8S207R8T6TR pinout, STM8S207R8T6TR application, or STM8S207R8T6TR equivalent, key selection criteria include CAN bus integration, SWIM single-wire debug capability, 24 MHz timing headroom for real-time control loops, and LQFP64 package compatibility with legacy STM8S footprint designs.

Technical Context

The STM8S207R8T6TR implements a 3-stage pipelined Harvard architecture core with extended instruction set and nested interrupt controller supporting 32 interrupts and up to 37 external IRQs on six 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 gate driving, dual 16-bit general-purpose timers (TIM2/TIM3), 8-bit basic timer (TIM4), and beCAN 2.0B controller operating at up to 1 Mbit/s - all independently clock-gatable via CLK_PCKENR registers.

Key Specifications

Pinout & Package

LQFP64 package (10 × 10 mm, 0.5 mm pitch), 64-pin quad flat lead frame with exposed thermal pad - compatible with standard reflow profiles and automated optical inspection.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM8S207C8T6, the STM8S207R8T6TR adds CAN and 14 extra I/Os in LQFP64; versus STM8S208R8T6, it trades 64 KB Flash and EEPROM endurance for cost-sensitive volume production without requiring extended code space.

Availability

STM8S207R8T6TR is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, smart energy metering, and PLC I/O modules requiring stable component supply across extended product lifecycles.

Supply support for STM8S207R8T6TR 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 devices for industrial, automotive, and consumer markets.

The STM8S Performance line targets cost-sensitive, high-reliability embedded applications demanding CAN/LIN connectivity, robust I/O, and long-term supply assurance - optimized for industrial automation and automotive body control units.

FAQ

What is the maximum operating frequency and associated voltage requirement for the STM8S207R8T6TR?

The STM8S207R8T6TR achieves a maximum CPU frequency of 24 MHz at VDD ≥ 4.5 V; operation at 16 MHz is guaranteed down to 2.95 V with zero wait states. This voltage-frequency scaling allows flexible power/performance trade-offs in battery-powered or wide-input industrial systems without compromising real-time response.

Does the STM8S207R8T6TR support in-system programming via SWIM, and what hardware is required?

Yes, the STM8S207R8T6TR supports full in-system programming and debugging via its Single Wire Interface Module (SWIM) using only the SWIM pin and GND. A ST-LINK/V2 or compatible debugger is required; no external bootloader or UART-based ISP is needed, enabling field firmware updates without exposing additional debug headers.

How does the integrated beCAN controller differ from basic UART-based CAN implementations?

The beCAN module is a fully autonomous CAN 2.0B controller with message filtering, transmit/receive FIFOs, automatic retransmission, and bus-off recovery - requiring no CPU intervention for frame arbitration or error handling. Unlike UART-based bit-banging, it guarantees strict ISO 11898-1 timing compliance and handles up to 1 Mbit/s with hardware CRC and ACK generation.

What are the key thermal and packaging specifications for the LQFP64 variant?

The STM8S207R8T6TR in LQFP64 (10 × 10 mm, 0.5 mm pitch) has a junction-to-ambient thermal resistance (R_θJA) of 40 °C/W under standard JEDEC 2-layer board conditions. It operates across –40 °C to +85 °C ambient, with maximum junction temperature limited to +125 °C - validated for continuous operation in enclosed industrial enclosures without forced airflow.