C8051F311-GM

C8051F311-GM is an 8‑bit microcontroller from Silicon Labs (C8051F3xx family) built around a classic 8051 core with on‑chip flash and RAM. It integrates a rich set of peripherals, including a multi‑channel ADC, analog comparators, timers, PWM outputs, and serial interfaces (UART, SPI, I2C). It supports multiple power modes and flexible clocking (internal/external clock sources), making it suitable for data acquisition, sensor interfacing, and compact control tasks. The “GM” suffix denotes a specific package option and lead‑free variant; exact memory size, I/O count, and package should be verified in the datasheet. Development is supported with Silicon Labs tools (IDE) and third‑party compilers such as Keil or SDCC.

Closest equivalents are other members of Silicon Labs’ C8051F3xx family with similar resources, for example: C8051F310-GM, C8051F312-GM, C8051F313-GM, C8051F320-GM, C8051F322-GM. Exact cross-reference depends on flash/RAM and peripherals—check Silicon Labs’ cross-reference tool or datasheets for precise matches.

C8051F311-GM features (concise):
- 8-bit 8051-compatible core with max clock up to 25 MHz
- On-chip non-volatile flash and RAM (sizes vary by package)
- 12-bit ADC with multiple input channels
- Peripherals: 2 UARTs, SPI, I2C (SMBus)
- Timers: three 16-bit timers plus an 8-bit timer; PWM-capable outputs
- Analog: two analog comparators
- Power and sleep: brown-out detector, watchdog timer, multiple low-power modes
- Debug/Programming: in-system programming/debug interface
- Package: GM (RoHS-compliant) options in common 28-pin packages
- Development support: Silicon Labs tools plus Keil/SDCC support
Note: exact memory sizes and I/O counts depend on specific package variant. Refer to the datasheet for the precise configuration of your F311-GM device.

Pin count: 20 pins.
Function: A small 8‑bit microcontroller (8051 core) with on‑chip flash/RAM and peripherals (ADC, timers, UART, SPI/I2C, etc.). The -GM suffix indicates the specific 20‑pin package variant.

Manufacturer: Silicon Labs (Silicon Laboratories, Inc.). It is a semiconductor company that designs and sells mixed-signal ICs, microcontrollers, sensors, and wireless products; Silicon Labs operates as a fabless semiconductor company (no internal wafer fab).

Applications for the C8051F311-GM include:
- Embedded control and data acquisition in cost-sensitive products
- Motor control and drive electronics (PWM, timers, ADC)
- Power-supply/inverter monitoring
- Sensor interfacing and data logging (temperature, current, voltage)
- Industrial automation and process control
- Consumer electronics and portable devices
- Automotive sensing and instrumentation
- IoT/edge devices and energy monitoring (UART/SPI/I2C)
Its mix of analog peripherals, ADCs, timers, PWM, and serial interfaces supports low-power, multi-peripheral control tasks.

C8051F311-GM is in a 32-pin lead-free QFN package (5x5 mm).