C8051F300-GM

The C8051F300-GM is a mixed-signal 8-bit microcontroller from Silicon Labs built around a high-speed 8051 core. It operates at up to 25 MHz and provides 8KB of in-system programmable Flash memory and 256 bytes of internal RAM. The MCU also includes an internal 24.5 MHz oscillator with ±2% accuracy and an on-chip debug interface for non-intrusive in-system programming and debugging.

For analog signal processing, the device integrates an 8-bit successive-approximation ADC capable of up to 500 ksps with eight external inputs and programmable gain settings of 0.5, 1, 2, and 4. A built-in temperature sensor, voltage reference options, and a comparator with programmable hysteresis extend its measurement capabilities. Digital peripherals include an enhanced UART, SMBus/I2C serial interface, three 16-bit timers, a programmable counter array (PCA), and eight port I/O pins that are 5V tolerant.

The microcontroller operates from a 2.7V to 3.6V supply, with typical current consumption of 6.6 mA at 25 MHz, 14 µA at 32 kHz, and only 0.1 µA in stop mode. It is specified over a -40°C to +85°C temperature range and is available in a compact 11-pin QFN package measuring 3x3 mm, suitable for space-constrained designs. Peripherals include power-on reset, voltage-supply monitor, watchdog timer, PWM, and temperature sensor, making it a standalone system-on-chip solution for applications such as battery chargers, motor control, and optical communications.