C8051F300-GM

The C8051F300-GM is an 8‑bit, 8051‑compatible microcontroller from Silicon Labs (Cygnal lineage). It combines the classic 8051 core with on‑chip flash memory and RAM, and a rich set of peripherals designed for embedded control and data acquisition. Typical features include multiple timers, serial interfaces (UART, SPI, I2C), and analog capabilities such as a high‑resolution ADC and analog comparators, plus PWM outputs. It supports low‑power operation with multiple sleep modes and straightforward in‑circuit programming/debugging via Silicon Labs tools. Code is stored in on‑chip flash and can be updated in the field. The “-GM” suffix denotes a specific package/pinout variant of the device. Applications include industrial control, sensors and instrumentation, data logging, motor control, and other compact, cost‑effective embedded tasks.

Key features of C8051F300-GM (Silicon Labs 8051 MCU):
- 8051-compatible microcontroller core with high-speed operation
- On-chip flash for program memory and RAM (no external memory required)
- 12-bit ADC with multiple input channels for analog sensing
- Analog peripherals: comparators for zero/threshold detection
- Timers: multiple 16-bit timers; watchdog timer
- Serial communications: UARTs, SPI, I2C
- PWM output capability for motor control or dimming
- In-system programming/debug support (on-chip debug/bootstrap)
- General-purpose I/O pins with multiple function options
- Low-power modes (sleep/power-down) for energy efficiency
- Operating voltage range suitable for common supplies (bus I/O tolerant)
- GM variant: lead-free, RoHS-compliant package
Note: exact memory sizes, package pin count, and peripheral counts may vary by specific GM package option.

- Pin count: 20 pins (GM package, 20‑pin SOIC).
- Function: An 8‑bit microcontroller in the 8051 family (C8051F300) with on‑chip flash and RAM and integrated peripherals for embedded control (timers, serial ports, ADC, etc.).

- Manufacturer: Silicon Labs (Silicon Laboratories, Inc.).
- Company type: A fabless semiconductor company that designs and markets mixed-signal integrated circuits and microcontrollers, outsourcing manufacturing to foundries.

Common application areas for the C8051F300-GM include:
- Sensor interfacing and data acquisition (analog inputs, ADC, comparators)
- Industrial automation and process control
- Portable, battery-powered instruments and meters
- Consumer electronics and home-appliance control
- Automotive sensing and body electronics modules
- Instrumentation, test and measurement systems
- Small, space-constrained embedded controllers and prototypes

C8051F300-GM comes in a 28-pin LQFP (QFP) surface-mount package.