What this part is and where it fits
The STM32F100CBT7BTR: 32-bit ARM Cortex-M3 MCU, clocked at 24 MHz, with 128 KB Flash and 8 KB RAM. Operating temperature range -40°C to 105°C.
24 MHz — what it means for your control loop
Runs at 24 MHz with a 2V to 3.6V supply range. Suitable for PID loops at a few kilohertz or Modbus RTU polling.
Industrial temperature range — the deployment context
Rated -40°C to 105°C. 48-LQFP package (7x7 mm).
Lifecycle reality — end-of-life planning needed
End-of-life status. Last-time-buy notice issued. For legacy support, we source through independent distribution.
Peripherals and I/O — what's on the package
37 GPIOs, I²C, SPI, USART, IrDA, and LIN interfaces cover the typical sensor-and-communication mix for a small controller. The internal oscillator eliminates the external crystal for basic timing, though a crystal can still be attached for tighter accuracy. The 10-channel 12-bit ADC and dual 12-bit DAC handle analog I/O without an external converter IC.