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STMicroelectronics STM8S207M8T3BTR
- Part No.:
- STM8S207M8T3BTR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 80-LQFP
- Datasheet:
-
STM8S207M8T3BTR.pdf
- Description:
- IC MCU 8BIT 64KB FLASH 80LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,419
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Product details
Overview
STM8S207M8T3BTR 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 integrated CAN 2.0B controller - deployed in automotive body control modules and industrial sensor nodes requiring deterministic real-time response.
For engineers reviewing the STM8S207M8T3BTR datasheet, STM8S207M8T3BTR pinout, STM8S207M8T3BTR application, or STM8S207M8T3BTR equivalent, key selection criteria include CAN interface integration, 68-pin LQFP80 package compatibility, SWIM single-wire debug support, 2.95–5.5 V wide supply range, and verified 300 kcycle EEPROM endurance for firmware-over-the-air update storage.
Technical Context
The STM8S207M8T3BTR implements a 3-stage pipelined STM8 core with extended instruction set and nested interrupt controller supporting 32 interrupts and up to 37 external IRQ lines across six vectors. Its clock system integrates user-trimmable 16 MHz RC, low-power 128 kHz RC, and crystal oscillator with clock security monitor.
Peripheral subsystems include 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), beCAN 2.0B at 1 Mbit/s, and UARTs supporting LIN 2.1 master/slave with automatic resynchronization - all individually gated for dynamic power management.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | STM8 8-bit Harvard core with 3-stage pipeline and 20 MIPS @ 24 MHz - enables deterministic cycle-counted execution for time-critical control loops. |
| Flash Memory | 128 KB program Flash with 20-year data retention at 55 °C after 10 kcycles - supports field-upgradable firmware with robust version rollback capability. |
| Data EEPROM | 2 KB true data EEPROM rated for 300 kcycles endurance - provides nonvolatile parameter storage without external serial EEPROM IC. |
| CAN Interface | beCAN 2.0B compliant controller with 1 Mbit/s operation - enables direct integration into automotive body networks without external transceiver logic. |
| ADC Resolution | 10-bit SAR ADC with up to 16 input channels and internal reference - delivers sufficient precision for analog sensor interfacing (e.g., temperature, pressure, current sense). |
| Supply Voltage | 2.95–5.5 V operating range - allows direct connection to 3.3 V or 5 V system rails without level-shifting or dedicated LDO. |
| I/O Count | 68 I/O pins in LQFP80 package, including 18 high-sink outputs - supports dense peripheral interfacing (e.g., LED drivers, relay controls, multi-sensor arrays). |
| Debug Interface | Single Wire Interface Module (SWIM) - enables full in-circuit debugging and programming using only one pin, reducing PCB routing overhead. |
Pinout & Package
LQFP80 (14 × 14 mm, 0.5 mm pitch) package with exposed thermal pad; RoHS-compliant, industrial temperature grade (–40 to +85 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual VDD/VSS pairs ensure stable core and I/O rail decoupling; VCAP pin requires external 1 µF ceramic capacitor for internal regulator stability. |
| NRST | Active-low reset input | Asynchronous reset with built-in pull-up; accepts external push-button or supervisor IC assertion; supports low-power wakeup via EXTI. |
| SWIM | Single-wire debug interface | Bi-directional debug communication line - replaces JTAG/SWD pins, enabling minimal footprint debugging and flash programming. |
| PA0–PA7, PB0–PB7, etc. | General-purpose I/O ports | 68 total I/Os with configurable alternate functions (UART, SPI, I²C, CAN, TIM); 18 pins support 20 mA sink for direct LED/relay drive. |
| PD0/PD1 | CAN TX/RX | Dedicated differential CAN bus interface pins - require external CAN transceiver (e.g., TJA1042) for physical layer compliance. |
| PC3/PC4 | UART1 TX/RX | Full-duplex asynchronous serial interface - supports LIN master mode and automatic resynchronization for noisy automotive environments. |
Key Features
| Feature | Design Value |
|---|---|
| Advanced Control Timer (TIM1) | 16-bit timer with 4 CAPCOM channels, 3 complementary outputs, and programmable dead-time - enables 3-phase motor gate driving without external logic. |
| Integrated CAN 2.0B Controller | Hardware mailbox management, 16 message objects, and bit-rate auto-calibration - reduces CPU load and ensures deterministic CAN frame scheduling. |
| Low-Power Modes | Wait, active-halt, and halt modes with individual peripheral clock gating - achieves sub-1 µA halt current while retaining RAM and register state. |
| True Data EEPROM | 2 KB on-chip EEPROM with 300 kcycle endurance and byte-level erase - eliminates need for external nonvolatile memory in configuration-critical applications. |
| Robust I/O Design | I/Os immune to current injection up to 50 mA - withstands ESD and transient coupling in industrial wiring harnesses without external protection diodes. |
| 96-bit Unique ID | Factory-programmed read-only identifier per device - enables secure device authentication and license binding in OEM firmware deployments. |
Applications
| Automotive Body Control Unit | Industrial Motor Drive Interface |
|---|---|
Use Scenario: Centralized control of door locks, window lifts, mirror adjustment, and interior lighting in 12 V vehicle platforms. IC Role / Device Role / Timing Role: Main MCU executing CAN-based command arbitration, PWM motor control, and LIN slave communication with sensors/actuators. Use Value: Integrated CAN + LIN + high-sink I/Os reduce BOM count by eliminating discrete transceivers and driver ICs; 128 KB Flash accommodates multi-feature firmware updates. |
Use Scenario: Compact BLDC motor controller for HVAC blowers or conveyor systems with Hall-effect feedback and current sensing. IC Role / Device Role / Timing Role: Real-time commutation engine using TIM1's complementary outputs and dead-time insertion for gate driver timing safety. Use Value: Hardware-accelerated motor control frees CPU cycles for supervisory tasks (fault logging, thermal monitoring); 10-bit ADC samples current/voltage at ≤1 µs conversion time. |
| Smart Energy Metering Node | Medical Diagnostic Sensor Hub |
Use Scenario: Sub-metering module aggregating voltage, current, and temperature data from multiple circuits before CAN transmission to gateway. IC Role / Device Role / Timing Role: Data acquisition hub with synchronized ADC sampling, EEPROM-backed calibration storage, and CAN reporting stack. Use Value: On-chip 2 KB EEPROM stores per-channel gain/offset coefficients with 300 kcycle reliability - avoids recalibration after 10+ years of field operation. |
Use Scenario: Portable diagnostic device collecting analog signals from ECG, SpO₂, and temperature sensors for Bluetooth LE forwarding. IC Role / Device Role / Timing Role: Low-power signal conditioner and protocol bridge between analog front-end and wireless SoC via UART/I²C. Use Value: 2.95–5.5 V operation supports single-cell Li-ion or coin-cell backup; active-halt mode draws <2 µA while maintaining RTC and wake-on-ADC thresholds. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit MCU with CAN applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM8S208MBT6 | Same package and pinout; adds 1x additional UART and enhanced ADC trigger flexibility - no change in Flash/EEPROM size or CAN capability. | Preferred where dual UART + CAN coexistence is required (e.g., simultaneous diagnostics port and CAN bus). | Select when needing extra serial channel without redesigning PCB layout or firmware abstraction layer. |
| STM32F042F6P6 | 32-bit ARM Cortex-M0 core, 48 MHz, 32 KB Flash, no native CAN - requires external CAN transceiver and software CAN stack. | Suitable for cost-sensitive designs prioritizing processing headroom over CAN hardware acceleration. | Choose only if migrating to 32-bit ecosystem and accepting higher firmware development effort for CAN protocol handling. |
Compared with STM8S208MBT6, STM8S207M8T3BTR offers identical CAN/peripheral integration at lower Flash density but retains full debug and EEPROM functionality; versus STM32F042F6P6, it delivers hardware CAN with zero software stack overhead and proven qualification for automotive body electronics.
Availability
STM8S207M8T3BTR is available at Aetrix Electronics and suitable for automotive body control units, industrial motor interfaces, smart energy metering nodes, and medical diagnostic sensor hubs requiring stable component supply across extended product lifecycles.
Supply support for STM8S207M8T3BTR 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 components since 1987.
The STM8S series targets cost-sensitive, high-reliability 8-bit applications in automotive, industrial, and appliance markets - emphasizing robustness, long-term availability, and toolchain maturity over raw performance scaling.
FAQ
Does STM8S207M8T3BTR support CAN FD?
No. The STM8S207M8T3BTR integrates only classic CAN 2.0B (ISO 11898-1) with fixed 11-bit identifiers and 8-byte payload. It lacks CAN FD features such as flexible data rate, extended identifiers, or payload lengths beyond 8 bytes. For CAN FD, consider ST's SPC5 or STM32G4 families.
What is the maximum allowed VDD ripple for stable 24 MHz operation?
Per datasheet Section 10.3.2, VDD ripple must remain within ±2 % of nominal voltage (e.g., ±100 mV for 5 V supply) during 24 MHz operation. Exceeding this causes clock instability or flash write corruption; recommended design uses ≥10 µF bulk + 100 nF ceramic decoupling per VDD pin.
Can the internal 16 MHz RC oscillator be used for CAN bit timing?
Yes, but only with trimming. The factory-trimmed 16 MHz RC has ±1 % accuracy; CAN 1 Mbit/s requires ≤±0.5 % timing tolerance. Users must perform runtime calibration against an external crystal or LIN sync pulse to meet CAN timing requirements - documented in AN2606 and RM0016.
Is SWIM debug compatible with ST-LINK/V2?
Yes. ST-LINK/V2 and later versions support SWIM protocol natively. No adapter is needed - connect SWIM pin (PD3), NRST, VDD, and GND to ST-LINK's SWIM header. STM8CubeProgrammer and ST Visual Develop fully support flash programming and real-time variable inspection via SWIM.
STM8S207M8T3BTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 80-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:
- 68
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 2K 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:
STM8S207M8T3BTR FAQ
1.How can I place an order for STM8S207M8T3BTR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM8S207M8T3BTR 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 STM8S207M8T3BTR reliable?
The price and inventory of STM8S207M8T3BTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM8S207M8T3BTR is usually 5 days.
3.What payment methods are accepted for STM8S207M8T3BTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM8S207M8T3BTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM8S207M8T3BTR?
STM8S207M8T3BTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM8S207M8T3BTR 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 STM8S207M8T3BTR?
For technical support, including STM8S207M8T3BTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM8S207M8T3BTR requirements.
6.How does Aetrix verify that STM8S207M8T3BTR is sourced from the original manufacturer or authorized distributors?
All STM8S207M8T3BTR 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 STM8S207M8T3BTR meets industry standards.
7.What is the process for return or replacement of STM8S207M8T3BTR?
All STM8S207M8T3BTR units undergo pre-shipment inspection (PSI). If there is an issue with STM8S207M8T3BTR, 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 STM8S207M8T3BTR part is unused and in its original packaging.
Return procedure for STM8S207M8T3BTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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