C8051F399-A-GM

Overview

The C8051F399-A-GM is an 8-bit mixed-signal microcontroller from Silicon Labs, part of the C8051F39x family. It features a pipelined 8051 core with up to 50 MIPS throughput at a 50 MHz clock frequency. The device includes 4 kB of in-system programmable Flash memory and 1 kB of internal data RAM. It operates within a supply voltage range of 1.8 V to 3.6 V and supports an extended industrial temperature range of -40 °C to +105 °C. The component is housed in a compact 20-pin QFN package.

Feature Summary

• High-performance 8051 core with pipelined architecture for efficient instruction execution
• Integrated on-chip debug circuitry enabling full-speed, non-intrusive in-system debugging
• Low-power operation capabilities including Stop mode current consumption of 200 nA
• Extended temperature range support suitable for demanding industrial environments

Applications

• Industrial control systems requiring robust environmental tolerance
• Battery-powered devices utilizing low-power stop modes
• Embedded applications needing in-circuit reprogrammable firmware storage
• Mixed-signal monitoring tasks using integrated analog peripherals

Procurement Notes

Verify that the specific ordering suffix matches the required package variant and temperature grade. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure design compatibility with the 20-QFN footprint dimensions. Check for any recent product change notices affecting assembly or sourcing parameters.

Selection Notes

Select this component when a small form factor MCU with extended temperature range is required. Compare against the C8051F37x series if EEPROM functionality is necessary, as the F39x series lacks this feature. Evaluate pin count requirements against the 17 available I/Os in the QFN-20 package. Consider power consumption profiles relative to active and stop mode specifications.

Part Context

This device belongs to the C8051F39x family, which serves as a next-generation upgrade to the C8051F33x series. It maintains hardware and code compatibility with previous generations while offering increased speed and extended temperature ranges. The family provides a footprint-compatible solution for designers migrating existing designs to higher performance levels without altering board layouts.

Replacement Considerations

Public confirmed substitute part numbers: None identified.