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STMicroelectronics STM8S208RBT6
- Part No.:
- STM8S208RBT6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
STM8S208RBT6.pdf
- Description:
- IC MCU 8BIT 128KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,795
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Product details
Overview
STM8S208RBT6 from STMicroelectronics is an 8-bit high-performance microcontroller featuring a Harvard-architecture STM8 core, 24 MHz max CPU frequency, 128 KB Flash with 20-year data retention, 2 KB true EEPROM (300 kcycles), and integrated CAN 2.0B interface. It targets automotive body electronics, industrial control panels, and smart sensor nodes requiring robust real-time communication and low-power operation.
For engineers reviewing the STM8S208RBT6 datasheet, STM8S208RBT6 pinout, STM8S208RBT6 application, or STM8S208RBT6 equivalent, key selection criteria include its dual UARTs with LIN support, 10-bit ADC with up to 16 channels, advanced TIM1 timer with dead-time insertion, SWIM single-wire debug interface, and LQFP80 package with 68 I/Os including 18 high-sink outputs.
Technical Context
The STM8S208RBT6 implements a 3-stage pipelined Harvard architecture core 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/oscillator inputs, all monitored by a clock security system.
Interrupt handling uses a nested controller supporting 32 vectors and up to 37 external interrupts across 6 priority levels. Peripheral subsystems include beCAN 2.0B operating at 1 Mbit/s, two UARTs (one with LIN 2.1 master/slave and automatic resynchronization), SPI up to 10 Mbit/s, and I²C up to 400 kbit/s - all independently clock-gatable for power optimization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | Harvard, 3-stage pipeline STM8 core; enables deterministic instruction fetch/execute timing critical for real-time control loops. |
| Max CPU Frequency | 24 MHz with 0 wait states ≤16 MHz; supports high-speed motor control and protocol processing without performance throttling. |
| Flash Memory | 128 KB with 20-year data retention at 55 °C after 10 kcycles; suitable for field-upgradable firmware in long-lifecycle industrial deployments. |
| Data EEPROM | 2 KB true EEPROM, 300 kcycle endurance; eliminates need for external nonvolatile storage in parameter logging or calibration storage. |
| CAN Interface | beCAN 2.0B compliant, 1 Mbit/s; enables direct integration into automotive body networks and industrial CANopen systems. |
| ADC Resolution & Channels | 10-bit SAR ADC with up to 16 input channels; provides sufficient precision for analog sensor interfacing (e.g., temperature, pressure, current sensing). |
| I/O Count & Type | 68 I/Os in LQFP80 package, including 18 high-sink outputs (20 mA); drives LEDs, relays, and logic-level MOSFETs directly without buffer stages. |
Pinout & Package
LQFP80 (14 × 14 mm, 0.5 mm pitch) package with exposed thermal pad; RoHS-compliant, industrial temperature range (–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; supports noise-immune operation in electrically harsh environments. |
| NRST | Active-low reset input | Internally pulled up; accepts external reset sources or watchdog timeout signals; includes Schmitt-trigger input for noise immunity. |
| SWIM | Single-wire interface module | Enables full debug, programming, and memory access via one pin - reduces PCB routing complexity and cost vs JTAG. |
| PA0–PA7, PB0–PB7, etc. | General-purpose I/O ports | Configurable as push-pull, open-drain, or input with pull-up/pull-down; 18 pins support 20 mA sink for direct LED/relay drive. |
| PD0/PD1 | CAN transceiver interface | Dedicated TX/RX lines for beCAN peripheral; require external transceiver (e.g., TJA1042) for physical layer compliance. |
| PC3/PC4 | UART1 TX/RX | Asynchronous serial interface supporting LIN 2.1 master/slave modes with automatic resynchronization for automotive diagnostics. |
Key Features
| Feature | Design Value |
|---|---|
| Advanced Control Timer (TIM1) | 16-bit with 4 CAPCOM channels, 3 complementary outputs, and programmable dead-time insertion - essential for 3-phase motor gate driving. |
| Low-Power Modes | Wait, active-halt, and halt modes with individual peripheral clock gating; achieves sub-μA standby current while retaining RAM and register state. |
| Integrated Clock Sources | Trimmed 16 MHz RC (±1% over VDD/temp), 128 kHz low-power RC, and HSE oscillator input - eliminates external crystals in cost-sensitive designs. |
| Robust I/O Design | Immunity to current injection per IEC 61000-4-2; withstands ±4 kV contact ESD without latch-up - critical for industrial HMI and automotive modules. |
| 96-bit Unique ID | Factory-programmed read-only identifier per device; enables secure firmware binding, device authentication, and anti-cloning in OEM applications. |
Applications
| Automotive Body Control Module | Industrial PLC I/O Expansion |
|---|---|
Use Scenario: Centralized control of door locks, window lifts, lighting, and mirror adjustment in 12 V vehicle architectures. IC Role / Device Role / Timing Role: Main MCU executing CAN message filtering, PWM dimming control, and LIN slave communication with sensors/actuators. Use Value: Integrated beCAN and LIN reduce BOM count; high-sink I/Os drive solenoids and lamps directly; EEPROM stores seat/mirror position presets. |
Use Scenario: Modular digital input/output extension for DIN-rail mounted programmable logic controllers in factory automation. IC Role / Device Role / Timing Role: Local intelligence node managing opto-isolated inputs, relay outputs, and RS-485 Modbus RTU communication. Use Value: Dual UARTs enable simultaneous Modbus master/slave operation; 10-bit ADC monitors supply voltage and temperature; SWIM simplifies field firmware updates. |
| Smart HVAC Sensor Node | Medical Infusion Pump Controller |
Use Scenario: Battery-powered wireless sensor unit measuring ambient temperature, humidity, CO₂, and airflow in commercial buildings. IC Role / Device Role / Timing Role: Low-power data acquisition engine with periodic wake-up, sensor reading, and BLE/Wi-Fi gateway handoff. Use Value: Active-halt mode draws <1.5 μA; 16-channel ADC interfaces multiple analog sensors; internal RC oscillators eliminate timing crystal BOM cost. |
Use Scenario: Safety-critical infusion pump with motor control, flow sensing, alarm generation, and USB/HID host interface. IC Role / Device Role / Timing Role: Real-time safety monitor coordinating stepper motor sequencing, pressure monitoring, and audible/visual alerts. Use Value: Window watchdog prevents runaway code; TIM1 dead-time protection avoids shoot-through in H-bridge drivers; unique ID enables traceability per unit. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM8S207R8T6 | Same LQFP80 package but 64 KB Flash, no CAN interface, 1 KB EEPROM | Lacks beCAN; suitable only for UART/SPI/I²C-based control where CAN bus is not required | Select when CAN is unnecessary and lower Flash/E2PROM capacity meets firmware size requirements. |
| STM32F042F6P6 | 32-bit ARM Cortex-M0, 48 MHz, 32 KB Flash, no integrated EEPROM, USB 2.0 FS | Higher performance and USB connectivity, but requires external EEPROM for nonvolatile storage and lacks native CAN | Choose for USB HID/DFU applications or when migrating to 32-bit toolchain; verify CAN replacement via external transceiver + software stack. |
Compared with STM8S207R8T6, the STM8S208RBT6 adds CAN and doubles Flash/E2PROM; versus STM32F042F6P6, it trades 32-bit compute for integrated CAN, EEPROM, and lower power in simple deterministic tasks.
Availability
STM8S208RBT6 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O expansion, and smart HVAC sensor nodes requiring stable component supply across multi-year production cycles.
Supply support for STM8S208RBT6 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 applications demanding robust peripherals, low-power operation, and long-term supply stability - especially in automotive body electronics and industrial control.
FAQ
Does STM8S208RBT6 support in-system programming via SWIM?
Yes. The Single Wire Interface Module (SWIM) enables full in-system programming and debugging using only one dedicated pin (SWIM), with no need for additional hardware debug probes. It supports Flash and EEPROM erase/write, register inspection, and breakpoint execution - verified in ST's AN2631 and UM0470 documentation.
What is the maximum allowed VDD voltage and operating temperature range?
The absolute maximum VDD is 6.0 V, but the specified operating range is 2.95 V to 5.5 V. The industrial-grade STM8S208RBT6 is qualified for –40 °C to +85 °C ambient temperature, with validated electrical performance and reliability across this range per ST's DocID14733 Rev 13.
Can the internal 16 MHz RC oscillator be calibrated for improved accuracy?
Yes. The internal high-speed RC oscillator (HSI) is user-trimmable in steps of ±0.5% via the CLK_HSITRIMR register, allowing calibration against an external reference clock. Typical accuracy after trimming is ±1% over full VDD and temperature range, as confirmed in Section 10.3.4 of the datasheet.
Is the 2 KB data EEPROM truly independent of Flash memory?
Yes. The 2 KB data EEPROM is physically separate from the 128 KB program Flash, with independent write/erase cycles (300 kcycles endurance vs 10 kcycles for Flash). It supports byte-wise erase and write operations without affecting Flash contents, enabling reliable parameter storage during firmware updates.
STM8S208RBT6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 64-LQFP
- Series:
- STM8S
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- STM8
- Core Size:
- 8-Bit
- Speed:
- 24MHz
- Connectivity:
- CANbus, I2C, IrDA, LINbus, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 52
- Program Memory Size:
- 128KB (128K 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM8S208RBT6 FAQ
1.How can I place an order for STM8S208RBT6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM8S208RBT6 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 STM8S208RBT6 reliable?
The price and inventory of STM8S208RBT6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM8S208RBT6 is usually 5 days.
3.What payment methods are accepted for STM8S208RBT6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM8S208RBT6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM8S208RBT6?
STM8S208RBT6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM8S208RBT6 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 STM8S208RBT6?
For technical support, including STM8S208RBT6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM8S208RBT6 requirements.
6.How does Aetrix verify that STM8S208RBT6 is sourced from the original manufacturer or authorized distributors?
All STM8S208RBT6 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 STM8S208RBT6 meets industry standards.
7.What is the process for return or replacement of STM8S208RBT6?
All STM8S208RBT6 units undergo pre-shipment inspection (PSI). If there is an issue with STM8S208RBT6, 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 STM8S208RBT6 part is unused and in its original packaging.
Return procedure for STM8S208RBT6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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