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STMicroelectronics STM8S207R8T3TR
- Part No.:
- STM8S207R8T3TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
STM8S207R8T3TR.pdf
- Description:
- IC MCU 8BIT 64KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,499
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Product details
Overview
STM8S207R8T3TR 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, 10-bit ADC with 16 channels, two UARTs (one CAN-capable), SPI, I²C, and advanced control timer with dead-time insertion - deployed in automotive body control modules and industrial motor drives.
For engineers reviewing the STM8S207R8T3TR datasheet, STM8S207R8T3TR pinout, STM8S207R8T3TR application, or STM8S207R8T3TR equivalent, key selection criteria include CAN 2.0B compliance, SWIM single-wire debug interface, 68 I/O count in LQFP80, 2.95–5.5 V supply range, and integrated 128 kHz/16 MHz RC oscillators enabling rapid boot and low-power operation.
Technical Context
The STM8S207R8T3TR implements a 3-stage pipelined Harvard-architecture core delivering up to 20 MIPS at 24 MHz with zero wait states ≤16 MHz. Its clock system integrates user-trimmable 16 MHz RC, low-power 128 kHz RC, and external crystal support with clock security monitoring.
Interrupt handling uses a nested controller supporting 32 vectors and up to 37 external interrupts across 6 priority levels. Peripheral integration includes beCAN 2.0B (1 Mbit/s), dual UARTs with LIN 2.1 support, and TIM1 with 3 complementary outputs + dead-time insertion for three-phase motor control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | STM8 8-bit Harvard core with 3-stage pipeline and extended instruction set |
| Max CPU Frequency | 24 MHz with 0 wait states up to 16 MHz - enables deterministic real-time execution |
| Memory | 64 KB Flash (20-year retention @ 55 °C), 2 KB true data EEPROM (300 kcycle endurance), 6 KB RAM |
| Analog Peripherals | 10-bit ADC with 16 input channels, ±1 LSB INL/DNL, programmable sampling time |
| Communication Interfaces | beCAN 2.0B (1 Mbit/s), 2x UART (LIN 2.1 compliant), SPI (10 Mbit/s), I²C (400 Kbit/s) |
| Timers | TIM1 (16-bit advanced, 4 CAPCOM, 3 complementary outputs, dead-time), TIM2/TIM3 (16-bit GP), TIM4 (8-bit basic), AWU, WWDG/IWDG |
| Supply & Power Modes | 2.95–5.5 V operation; Wait, Active-Halt, Halt modes; individual peripheral clock gating |
Pinout & Package
LQFP80 (14 × 14 mm, 0.5 mm pitch) package with 68 I/O pins including 18 high-sink outputs, SWIM debug interface on pin 12, NRST on pin 1, VCAP on pin 7, and dedicated CAN TX/RX on pins 35/36.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NRST) | Active-low reset input | Asynchronous reset with internal pull-up; accepts 10 µs min pulse width |
| 7 (VCAP) | Voltage regulator capacitor connection | Requires 1 µF ceramic capacitor to stabilize internal 1.8 V regulator |
| 12 (SWIM) | Single Wire Interface Module | Bi-directional debug port for programming and real-time debugging using one pin |
| 35 (CAN_TX) | CAN transceiver output | Drives external CAN transceiver; logic-high = recessive, logic-low = dominant |
| 36 (CAN_RX) | CAN transceiver input | Receives differential CAN bus signal via external transceiver; Schmitt-trigger input |
| 41–48 (PA0–PA7) | Port A general-purpose I/O | 8-bit bidirectional port with configurable pull-ups, alternate functions including UART1, SPI, TIM1 |
Key Features
| Feature | Design Value |
|---|---|
| beCAN 2.0B interface | Full CAN protocol stack support at 1 Mbit/s with message filtering, FIFO, and automatic retransmission |
| SWIM single-wire debug | On-chip debug access via one pin without halting CPU - enables live register inspection and flash programming |
| Advanced control timer (TIM1) | 16-bit timer with 3 complementary PWM outputs, programmable dead-time (1–1023 ns), and synchronization inputs for motor phase control |
| Robust I/O design | Immunity to current injection up to 100 mA; 18 pins support 20 mA sink capability for direct LED/relay drive |
| Integrated clock sources | User-trimmable 16 MHz RC (±1% after trim), 128 kHz low-power RC, and external crystal oscillator with fail-safe clock monitor |
Applications
| Automotive Body Control Unit (BCU) | Industrial BLDC Motor Drive |
|---|---|
Use Scenario: Centralized control of door locks, window lifts, mirrors, and lighting in 12 V vehicle systems. IC Role / Device Role / Timing Role: Main MCU executing CAN-based command arbitration, PWM-driven actuator control, and LIN-slave communication with sensors. Use Value: Integrated beCAN and LIN support eliminates external protocol translators; high-sink I/O directly drives solenoids and lamps without buffer stages. |
Use Scenario: Sensorless commutation and torque regulation for 3-phase brushless DC motors in HVAC blowers and pumps. IC Role / Device Role / Timing Role: Real-time PWM generation with synchronized ADC sampling and dead-time protection for gate drivers. Use Value: TIM1's complementary outputs + dead-time insertion prevent shoot-through in inverter bridges; 10-bit ADC samples back-EMF with <1 µs conversion latency. |
| Smart Energy Metering Interface | Factory Automation I/O Controller |
Use Scenario: Data aggregation and secure local communication between metrology ICs and PLCs in DIN-rail mounted meters. IC Role / Device Role / Timing Role: Isolated UART-to-I²C bridge with firmware-based CRC validation and EEPROM-stored calibration coefficients. Use Value: 2 KB data EEPROM retains meter-specific calibration data across 300k write cycles; I²C interface supports multi-drop sensor networks. |
Use Scenario: Modular digital I/O expansion node in PLC backplanes, accepting discrete inputs and driving relay outputs. IC Role / Device Role / Timing Role: Deterministic scan engine polling 64 inputs via GPIO ports and updating 64 outputs with configurable debounce and edge detection. Use Value: 68 robust I/O pins tolerate 100 mA current injection per pin; independent peripheral clock gating reduces idle power to 1.2 µA in halt mode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM8S207M8T6 | LQFP64 package (48 I/O), identical peripherals and memory but reduced pin count and no CAN_RX/TX on dedicated pins | Suitable for space-constrained designs where CAN routing is handled externally or not required | Select when board layout requires smaller footprint and CAN signals can be remapped or omitted |
| STM8S208R8T3TR | Same LQFP80 package but adds 2x additional UARTs and enhanced ADC trigger flexibility; no functional change to CAN or TIM1 | Better suited for multi-protocol gateway applications requiring concurrent UART+CAN+I²C traffic | Choose when simultaneous serial protocol concurrency exceeds STM8S207R8T3TR's dual-UART limit |
Compared with STM8S207M8T6, the STM8S207R8T3TR provides full CAN physical layer routing in LQFP80; versus STM8S208R8T3TR, it trades two UARTs for cost-sensitive CAN-centric designs without sacrificing motor control or debug capabilities.
Availability
STM8S207R8T3TR is available at Aetrix Electronics and suitable for automotive body electronics, industrial motor drives, smart metering interfaces, and factory automation I/O controllers requiring stable component supply over extended production lifecycles.
Supply support for STM8S207R8T3TR 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 devices for industrial, automotive, and consumer markets.
The STM8S series targets cost-sensitive, high-reliability 8-bit embedded applications demanding CAN/LIN connectivity, robust I/O, and ultra-low-power operation - optimized for automotive body electronics and industrial control.
FAQ
Does STM8S207R8T3TR support CAN FD?
No. The STM8S207R8T3TR implements only classic CAN 2.0B (ISO 11898-1) at up to 1 Mbit/s. It lacks CAN FD features such as flexible data-rate, extended data length (up to 64 bytes), and CRC enhancements. For CAN FD, consider ST's SPC5 or STM32H7 families.
What is the maximum allowed VCAP capacitor value?
The datasheet specifies a 1 µF ±20% ceramic capacitor on VCAP (pin 7). Exceeding 2.2 µF risks instability in the internal voltage regulator, potentially causing erratic reset behavior or failed SWIM communication. X7R dielectric is recommended for temperature stability.
Can the 16 MHz internal RC oscillator be calibrated in-system?
Yes. The 16 MHz RC oscillator includes a 7-bit trimming register (CLK_ICKCR) accessible via SWIM or firmware. Calibration against an external reference (e.g., crystal or precision timer) achieves ±1% accuracy across voltage and temperature - critical for UART baud rate stability.
Is the 96-bit unique ID accessible via standard debug interfaces?
Yes. The 96-bit unique ID (stored in option byte area) is readable via SWIM during debug sessions and through firmware using the FLASH_OBR register. It remains unalterable and immune to mass erase, enabling secure device authentication and license binding in production firmware.
STM8S207R8T3TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 64-LQFP
- Series:
- STM8S
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- STM8
- Core Size:
- 8-Bit
- Speed:
- 24MHz
- Connectivity:
- I2C, IrDA, LINbus, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 52
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 1.5K x 8
- RAM Size:
- 6K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.95V ~ 5.5V
- Data Converters:
- A/D 16x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM8S207R8T3TR FAQ
1.How can I place an order for STM8S207R8T3TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM8S207R8T3TR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for STM8S207R8T3TR reliable?
The price and inventory of STM8S207R8T3TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM8S207R8T3TR is usually 5 days.
3.What payment methods are accepted for STM8S207R8T3TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM8S207R8T3TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM8S207R8T3TR?
STM8S207R8T3TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM8S207R8T3TR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for STM8S207R8T3TR?
For technical support, including STM8S207R8T3TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM8S207R8T3TR requirements.
6.How does Aetrix verify that STM8S207R8T3TR is sourced from the original manufacturer or authorized distributors?
All STM8S207R8T3TR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STM8S207R8T3TR meets industry standards.
7.What is the process for return or replacement of STM8S207R8T3TR?
All STM8S207R8T3TR units undergo pre-shipment inspection (PSI). If there is an issue with STM8S207R8T3TR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The STM8S207R8T3TR part is unused and in its original packaging.
Return procedure for STM8S207R8T3TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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