C8051F339-GMR

Overview

The C8051F339-GMR is a mixed-signal microcontroller from Silicon Labs, part of the C8051F33x family. It features an 8051 core operating at up to 25 MHz with 16 kB Flash and 768 bytes RAM. The device includes a 10-bit ADC (on F336/8 only), comparator, four 16-bit timers, PCA, SMBus, SPI, and UART. It operates on 2.7V to 3.6V supply voltage within a -40°C to +85°C temperature range. The component is housed in a 24-pin QFN package measuring 4 x 4 mm.

Feature Summary

• High-speed 8051 core with pipelined architecture executing most instructions in one or two system clocks
• On-chip debug circuitry enabling full-speed, non-intrusive in-system debugging without external emulators
• Flexible interrupt handling and pin assignment via programmable digital crossbar
• Integrated power management features including VDD monitor, watchdog timer, and multiple low-power modes

Applications

• Battery chargers
• Electronic toys and games
• Motor control systems
• Optical communication interfaces

Procurement Notes

Verify that the ordering suffix GMR corresponds to the tape and reel packaging variant as specified in the official datasheet. Confirm the specific revision level required for your design, noting that this component family is marked as not recommended for new designs. Ensure compatibility with existing PCB footprints and firmware libraries before finalizing procurement.

Selection Notes

Select this model when a compact 4x4 mm footprint is required alongside standard 8051 compatibility. It is suitable for applications needing moderate Flash memory and basic analog peripherals like comparators. Note that the integrated ADC and DAC are absent in the F339 variant compared to the F336/F338 models; verify peripheral requirements against the specific silicon capabilities.

Part Context

This component belongs to the C8051F33x series of highly integrated mixed-signal system-on-chip solutions. It shares pinout and code compatibility with the earlier C8051F330 family while offering enhanced performance and additional features. The series represents a mature generation of Silicon Labs 8-bit MCUs designed for cost-sensitive and space-constrained embedded applications.

Replacement Considerations

The C8051F339-GM is the lead-free equivalent without the reel suffix. Other members of the C8051F33x family, such as the C8051F336, C8051F337, and C8051F338, are pin-compatible but differ in analog peripheral availability.