STM8S208CBT6

ST
STM8S208CBT6
LQFP-48
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FAQ

Q: STM8S208CBT6 vs. STM8S207CBT6 — what are the real differences?
A: The three hardware differences are: 1) DAC — the S208 has a 10-bit DAC output, the S207 does not. 2) ADC INL — the S208 specifies 1 LSB max INL, the S207 specifies 2 LSB. 3) Unique ID — the S208 has a 96-bit factory ID, the S207 does not. All other specifications (core, Flash, SRAM, timers, CAN, pin

Q: Is the S208 a drop-in replacement for the S207?
A: Yes, fully pin-compatible. The S208 uses the identical LQFP-48 pinout as the S207. The DAC output pin is an additional function on a GPIO pin that was previously digital-only on the S207. Existing S207 firmware compiles and runs on the S208 without modification (though it won't use the new DAC/ID fe

1. Product Overview

The STM8S208CBT6 is the refined iteration of the Performance Line, enhancing the proven S207 platform with precision analog features. The 10-bit DAC is the headline addition — enabling the MCU to generate analog reference voltages for op-amp current-limit comparators in ESC designs, trim BMS charge-voltage setpoints without external DAC ICs, or produce analog control signals for legacy drone peripherals. The improved ADC (1 LSB INL vs. ~2 LSB on S207) provides more accurate battery voltage and current measurements without software calibration. The 96-bit unique ID (factory-programmed, unchangeable) enables ESC/BMS serialization, cryptographic authentication, and supply-chain traceability — features increasingly required in professional drone manufacturing for anti-counterfeiting, warranty

2. Key Features

  • 10-Bit DAC Output — Eliminates External Trim DACs
  • Improved ADC (1 LSB INL) — ±1 LSB Accuracy Without Calibration
  • 96-Bit Unique ID — Device Serialization and Authentication

3. Technical Specifications

ParameterValue
ManufacturerSTMicroelectronics
Part NumberSTM8S208CBT6
CoreSTM8 (8-bit, 24 MHz)
Flash / SRAM / EEPROM128 KB / 6 KB / 2 KB
PackageLQFP-48 (7×7 mm, 0.5 mm pitch)
Supply Voltage2.95V – 5.5V
Temperature−40°C to +85°C
GPIO38 (5V-tolerant)
ADC1× 10-bit, 10 channels (1 LSB INL — improved over S207)
DAC1× 10-bit output — not available on S207
Timers5× 16-bit (2× advanced PWM, 2× GP, 1× basic)
Communication2× UART, 1× SPI, 1× I²C, 1× CAN 2.0B
Unique ID96-bit factory-programmed unique device identifier
DebugSWIM

4. Applications

  • Precision DroneCAN ESC with Hardware Current Limiting
  • Secure Drone BMS with Authentication
  • Next-Generation CAN-Connected Drone Peripherals

5. Supply Solutions

Aurora supports customers with STM8S208CBT6 sourcing through verified global supply channels. We help OEMs and manufacturers manage availability challenges, production requirements, and lifecycle risks with flexible procurement solutions.

6. Quality Assurance

All components supplied by Aurora follow strict quality control procedures, including supplier verification, documentation review, inspection, and traceability management to ensure product authenticity and reliability.

7. Alternative & Replacement Solutions

When original STM8S208CBT6 components face shortages, lifecycle changes, or long lead times, Aurora helps customers identify suitable alternative components based on technical requirements, application needs, and supply conditions.

8. Request Quote / Contact

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Contact Aurora for component verification, quotation, and reliable supply solutions.

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