C8051F335-GM

Overview

The C8051F335-GM is a mixed-signal ISP Flash microcontroller from Silicon Labs, featuring an 8051 core with up to 25 MIPS throughput at a 25 MHz clock. It includes 2 kB of Flash memory and 768 bytes of internal data RAM. The device integrates a comparator, four 16-bit timers, a programmable counter array, and enhanced serial ports including UART, SMBus, and SPI. Operating within a 2.7 V to 3.6 V supply range, it supports industrial temperatures from -40 °C to +85 °C and utilizes a 20-pin QFN package.

Feature Summary

• High-speed pipelined 8051 core executing most instructions in one or two system clocks
• On-chip debug circuitry enabling full-speed non-intrusive in-system debugging without external emulators
• Programmable digital crossbar allowing flexible assignment of peripherals to I/O pins
• In-system programmable Flash memory supporting sector-based erasure and reprogramming

Applications

• Industrial control systems requiring robust analog integration
• Portable battery-powered instruments utilizing low-power stop modes
• Embedded communication interfaces using hardware-enhanced UART and SMBus
• Sensor signal conditioning circuits leveraging the on-chip comparator

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix matches the required package and temperature grade. Check for current lifecycle status as this series may be designated Not Recommended for New Designs. Ensure development tools are compatible with the C2 interface for programming and debugging.

Selection Notes

Select this model when 2 kB of Flash is sufficient for application firmware requirements. Consider alternative members of the C8051F33x family if larger memory capacities or integrated ADC/DAC peripherals are necessary. Evaluate power consumption profiles against idle and active mode specifications. Verify that the 20-pin QFN footprint aligns with existing PCB layout constraints.

Part Context

This component belongs to the C8051F33x series of mixed-signal microcontrollers designed by Silicon Labs. The series provides a highly integrated system-on-a-chip solution combining a fast 8051 processor with various analog and digital peripherals. These devices are engineered for applications demanding high performance and low cost in a compact form factor.

Replacement Considerations

Consult the official product selection guide for pin-compatible alternatives within the C8051F33x family. Verify code compatibility when migrating between variants with differing memory sizes or peripheral sets.