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Product attributes Property Value
Manufacturer STMicroelectronics
Product Series STM8S
Packaging Tube | NULL
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 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 ~ 125°C (TA)
Grade -
Qualification AEC -
Mounting Type Surface Mount
Supplier Device Package 64-LQFP (10x10)
Package / Case 64-LQFP
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The STM8S207RBT3 from STMicroelectronics is an 8-bit MCU based on the STM8 core. It operates at 24MHz with 128KB flash and 6KB RAM. Features include brown-out reset, POR, PWM, and WDT. With a 2.95V-5.5V supply and -40°C to 125°C range, it is built for automotive and industrial use.

  • High temperature (125°C): Reliable in engine bays and industrial ovens.
  • Large flash (128KB): Supports complex firmware without external memory.
  • 5V tolerant I/O: Direct interface with legacy sensors and relays.
  • 24MHz performance: Handles real-time control loops efficiently.

Automotive ECUs

125°C rating and 24MHz CPU handle engine control for aftermarket ECUs.

Industrial Drives

PWM and WDT support VFD control in harsh factory floors.

Power Conversion

5V operation simplifies gate driver interfaces for SMPS.

Home Automation

128KB flash stores complex Zigbee/ZWave protocol stacks.

Medical Devices

BOR ensures safe operation in infusion pumps; 6KB RAM for buffers.

Smart Grid

Robust I/O and wide temp range suit outdoor metering units.

Q: What is the max clock speed?
A: 24MHz.
Q: What is the flash size?
A: 128KB.
Q: What is the temperature range?
A: -40°C to 125°C.
Q: Does it have a brown-out reset?
A: Yes, includes BOR and POR.
Base Product Number : STM8S207RB
128KB flash 24MHz 64-LQFP 8-bit MCU automotive STM8 STMicroelectronics
Q: What is the max clock speed?
A: 24MHz.
Q: What is the flash size?
A: 128KB.
Q: What is the temperature range?
A: -40°C to 125°C.
Q: Does it have a brown-out reset?
A: Yes, includes BOR and POR.