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STMicroelectronics STM8S207S8T3CTR
- Part No.:
- STM8S207S8T3CTR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 44-LQFP
- Datasheet:
-
STM8S207S8T3CTR.pdf
- Description:
- IC MCU 8BIT 64KB FLASH 44LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,339
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Product details
Overview
STM8S207S8T3CTR 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 timers including TIM1 with dead-time insertion. It targets automotive body electronics, industrial control panels, and smart appliance main control units.
For engineers reviewing the STM8S207S8T3CTR datasheet, STM8S207S8T3CTR pinout, STM8S207S8T3CTR application, or STM8S207S8T3CTR equivalent, key selection criteria include CAN 2.0B compliance, SWIM single-wire debug interface, 68 I/O capability in LQFP80, low-power active-halt mode (1.5 µA typ), and integrated 96-bit unique ID for secure firmware binding.
Technical Context
The STM8S207S8T3CTR implements an advanced 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 support with clock security monitoring.
Peripheral architecture includes beCAN 2.0B controller operating at 1 Mbit/s, dual UARTs supporting LIN 2.1 master/slave modes with automatic resynchronization, and TIM1 advanced timer with 4 CAPCOM channels, 3 complementary outputs, and hardware dead-time insertion - enabling precise motor phase control and digital power supply regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | STM8 8-bit Harvard core with 3-stage pipeline; enables deterministic interrupt latency and efficient code density vs von Neumann alternatives. |
| Max CPU Frequency | 24 MHz with 0 wait states ≤16 MHz; supports real-time control loops requiring sub-100 ns instruction timing. |
| Flash Memory | 64 KB program Flash with 20-year data retention at 55 °C after 10 kcycles; sufficient for complex firmware with field-upgrade capability. |
| Data EEPROM | 2 KB true data EEPROM rated for 300 kcycles endurance; eliminates need for external nonvolatile storage in parameter logging applications. |
| ADC Resolution & Channels | 10-bit SAR ADC with up to 16 input channels and internal reference; enables simultaneous monitoring of multiple analog sensors without multiplexer overhead. |
| CAN Interface | beCAN 2.0B compliant controller supporting 1 Mbit/s bit rate; provides robust, fault-tolerant communication for automotive and industrial networks. |
| I/O Count & Type | Up to 68 I/Os in LQFP80 package, including 18 high-sink outputs (up to 50 mA); drives LEDs, relays, and logic-level MOSFET gates directly. |
| Debug Interface | Single Wire Interface Module (SWIM) with full run-control and memory access; reduces PCB footprint vs JTAG and enables in-system programming via single pin. |
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 2.95–5.5 V supply rails; separate analog/digital domains supported via VDDA/VSSA pins for clean ADC reference. |
| NRST | Active-low reset input | Asynchronous reset with built-in pull-up; accepts external push-button or supervisor IC assertion with glitch filtering. |
| SWIM | Single-wire debug interface | Bi-directional serial interface for programming and real-time debugging using only one GPIO pin and no external crystal. |
| PA0–PA7, PB0–PB7, etc. | General-purpose I/O ports | 68 total I/Os with configurable pull-ups, alternate functions (UART, SPI, CAN, timers), and high sink capability (50 mA on 18 pins). |
| PD0/PD1 | CAN transceiver interface | Dedicated TX/RX lines for beCAN controller; require external CAN transceiver (e.g., TJA1042) for physical layer compliance. |
| PC3/PC4 | UART1 TX/RX | Primary asynchronous serial interface supporting LIN master mode and synchronous clock output for daisy-chain sensor networks. |
| PE0/PE1 | UART3 TX/RX | Secondary UART with LIN 2.1 compliance and automatic resynchronization; enables redundant comms or multi-bus topology. |
| PF0–PF5 | ADC input channels | 6 dedicated analog inputs with shared use with GPIO; support 16-channel scan mode with programmable sampling time per channel. |
Key Features
| Feature | Design Value |
|---|---|
| beCAN 2.0B Controller | Integrated CAN protocol engine with message RAM, acceptance filtering, and error handling - eliminates external CAN controller and reduces BOM cost. |
| Advanced Control Timer (TIM1) | 16-bit timer with 4 CAPCOM channels, 3 complementary outputs, and hardware dead-time insertion - enables direct driving of 3-phase inverter bridges without external logic. |
| Low-Power Modes | Wait (1.8 µA), active-halt (1.5 µA), and halt (0.3 µA) modes with peripheral clock gating; extends battery life in portable industrial sensors. |
| 96-bit Unique ID | Factory-programmed immutable identifier per device; used for secure firmware binding, license enforcement, and anti-cloning in OEM deployments. |
| SWIM Debug Interface | Single-pin, non-intrusive debug and programming interface compatible with ST-LINK/V2; reduces debug header footprint and simplifies production programming. |
| Robust I/O Design | I/Os immune to current injection up to 50 mA; withstands ESD events per IEC 61000-4-2 Level 4 (±8 kV contact) without external protection. |
Applications
| Automotive Body Control Module | 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-driven actuator control, and LIN slave communication with distributed nodes. Use Value: beCAN 2.0B and dual LIN-capable UARTs enable seamless integration into existing automotive network topologies without gateway translation. |
Use Scenario: Sensorless BLDC motor commutation and current sensing in HVAC blowers, pump controllers, and conveyor drives. IC Role / Device Role / Timing Role: Real-time execution of FOC algorithms using TIM1's complementary PWM outputs with dead-time control and ADC-triggered current sampling. Use Value: Hardware-accelerated motor control reduces CPU load by >40% versus software-timed solutions, enabling higher loop rates at 24 MHz. |
| Smart Appliance Main Controller | Energy Meter Data Acquisition Unit |
|
Use Scenario: Washing machine drum motion control, water heating management, and HMI coordination with touch panel and display drivers. IC Role / Device Role / Timing Role: System-on-chip managing 16-channel ADC for temperature/pressure sensing, dual UARTs for module interconnect, and EEPROM for cycle-count persistence. Use Value: Integrated 2 KB EEPROM eliminates external serial EEPROM, reducing component count and improving reliability in humid environments. |
Use Scenario: AC mains monitoring, harmonic analysis, and tariff switching in DIN-rail mounted electricity meters. IC Role / Device Role / Timing Role: High-accuracy 10-bit ADC with 16-channel scan and internal reference performs simultaneous voltage/current sampling synchronized to zero-cross detection. Use Value: 10-bit resolution with <1 LSB INL ensures Class 1 metering accuracy per IEC 62053-21 when paired with precision shunt resistors. |
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/Os), identical peripherals and memory; lacks 20 I/Os and 2 ADC channels of S8 variant. | Suitable for space-constrained designs where full 68 I/O count is unnecessary; lower pin count simplifies PCB routing. | Select when board layout favors smaller footprint and I/O requirements fit within 48 pins. |
| STM8S208R8T6 | Adds capacitive touch sensing (CTSU) peripheral and enhanced EEPROM write endurance (500 kcycles); same 64 KB Flash, 2 KB EEPROM. | Better suited for HMI-rich appliances (touch buttons, sliders); CTSU eliminates external touch controller IC. | Choose when capacitive touch interface is required and touch firmware stack compatibility is verified. |
Compared with STM8S207M8T6, the STM8S207S8T3CTR delivers 20 additional I/Os and 2 extra ADC channels in LQFP80 - critical for multi-sensor industrial gateways. Versus STM8S208R8T6, it trades CTSU for lower cost and proven stability in CAN-dominant automotive ECUs.
Availability
STM8S207S8T3CTR is available at Aetrix Electronics and suitable for automotive body control modules, industrial motor drive interfaces, and smart appliance main controllers requiring stable component supply across multi-year production cycles.
Supply support for STM8S207S8T3CTR 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 devices, sensors, and analog ICs for industrial, automotive, and consumer markets.
The STM8S series targets cost-sensitive, high-reliability embedded applications demanding robust peripherals, low-power operation, and long-term supply assurance - particularly in automotive body electronics and industrial automation.
FAQ
Does STM8S207S8T3CTR support CAN FD?
No. The STM8S207S8T3CTR integrates beCAN 2.0B, which supports Classical CAN only (ISO 11898-1:2003) at up to 1 Mbit/s. It does not implement CAN FD frame format, data rate switching, or extended data length. For CAN FD, consider ST's SPC5 or STM32H7 families.
What is the maximum allowed VDD slew rate during power-up?
The datasheet specifies a minimum VDD ramp time of 1 ms from 0 V to 2.95 V to ensure reliable power-on reset assertion. Exceeding 10 V/ms slew rate may cause metastability in internal reset circuitry, leading to inconsistent boot behavior or missed NRST deassertion.
Can the internal 16 MHz RC oscillator be calibrated in-system?
Yes. The STM8S207S8T3CTR allows runtime trimming of the HSI oscillator via the CLK_HSITRIMR register, adjusting frequency in ±1.5% steps using an external reference clock or calibrated timer input - enabling compensation for temperature and voltage drift without factory calibration.
Is SWIM debug compatible with ST-LINK/V2 and third-party tools?
Yes. SWIM is fully supported by ST-LINK/V2, ST-LINK/V2-1, and certified third-party debuggers (e.g., Raisonance RLink). It requires only SWIM and NRST pins; no SWCLK/SWDIO signals. Firmware updates and breakpoints operate identically to JTAG but with reduced pin count and simplified cabling.
STM8S207S8T3CTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 44-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:
- 34
- 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 9x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM8S207S8T3CTR FAQ
1.How can I place an order for STM8S207S8T3CTR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM8S207S8T3CTR 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 STM8S207S8T3CTR reliable?
The price and inventory of STM8S207S8T3CTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM8S207S8T3CTR is usually 5 days.
3.What payment methods are accepted for STM8S207S8T3CTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM8S207S8T3CTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM8S207S8T3CTR?
STM8S207S8T3CTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM8S207S8T3CTR 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 STM8S207S8T3CTR?
For technical support, including STM8S207S8T3CTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM8S207S8T3CTR requirements.
6.How does Aetrix verify that STM8S207S8T3CTR is sourced from the original manufacturer or authorized distributors?
All STM8S207S8T3CTR 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 STM8S207S8T3CTR meets industry standards.
7.What is the process for return or replacement of STM8S207S8T3CTR?
All STM8S207S8T3CTR units undergo pre-shipment inspection (PSI). If there is an issue with STM8S207S8T3CTR, 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 STM8S207S8T3CTR part is unused and in its original packaging.
Return procedure for STM8S207S8T3CTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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