C8051F802-GM

Overview

The C8051F802-GM is a mixed-signal ISP Flash microcontroller from the Silicon Labs C8051F80x-83x family. It features a high-speed 8051 core operating at up to 25 MHz with pipelined architecture delivering 25 MIPS throughput. The device integrates 16 kB of in-system programmable Flash memory and 512 bytes of internal data RAM. Key peripherals include a 10-bit ADC supporting up to 500 ksps, a capacitance-to-digital converter for capacitive sensing, two comparators, and multiple digital interfaces including UART, SMBus, and SPI. It operates on a supply voltage of 1.8 V to 3.6 V within a temperature range of –40 °C to +85 °C.

Feature Summary

• Integrates a capacitance-to-digital converter supporting buttons, sliders, wheels, and proximity sensing with fast conversion times and auto-scan capabilities.
• Features a high-speed 8051 core with pipelined instruction architecture that executes most instructions in one or two system clocks.
• Includes on-chip debug circuitry enabling full-speed, non-intrusive in-system debugging without external emulators.
• Provides flexible port I/O configuration via a priority crossbar decoder allowing dynamic assignment of peripheral functions to pins.

Applications

• Capacitive touch sensing applications such as buttons, sliders, and proximity detection
• Mixed-signal data acquisition systems requiring analog-to-digital conversion
• Industrial control devices utilizing serial communication interfaces
• Battery-powered embedded systems benefiting from low-voltage operation

Procurement Notes

Verify component authenticity through authorized Silicon Labs distributors or direct channels. Confirm package type matches design requirements, as the family supports QFN-20, QSOP-24, and SOIC-16 variants. Check current status as this specific series may be marked Not Recommended for New Designs; validate long-term availability if continuing production. Ensure ESD handling protocols are followed during assembly due to sensitive CMOS technology.

Selection Notes

Select this MCU when a highly integrated solution combining analog peripherals with capacitive sensing is required. The CIP-51 core offers enhanced performance over standard 8051 architectures while maintaining compatibility. Consider the available I/O count and peripheral set against application needs. Evaluate power consumption profiles across different clock speeds and sleep modes. Verify that the 1.8 V to 3.6 V supply range aligns with the system power architecture.

Part Context

The C8051F802-GM belongs to the C8051F80x-83x mixed-signal ISP Flash MCU family. This family is characterized by full system integration on a single chip, reducing board space and component count. The devices are designed for cost-sensitive applications requiring robust analog performance alongside digital processing capabilities. The family shares common architectural features but varies in memory size and peripheral configurations.

Replacement Considerations

Consult the official product selection guide for pin-compatible or functionally equivalent alternatives within the C8051F8xx series. Verify memory capacity and peripheral availability in potential substitutes. Note that newer generations may offer improved performance or additional features. Review datasheets for any changes in electrical characteristics or package dimensions before implementation.