C8051F313-GM

Overview

The C8051F313-GM is an 8-bit microcontroller from the Silicon Labs C8051F31x family, featuring a high-speed CIP-51 core with up to 25 MIPS throughput at 25 MHz. It integrates 8 kB of in-system programmable Flash and 1280 bytes of internal data RAM. The device includes a 10-bit ADC operating at up to 200 ksps with multiple external inputs, two comparators, and a built-in temperature sensor. Digital peripherals consist of hardware-enhanced UART, SMBus, SPI, four 16-bit timers, and a PCA with five capture/compare modules. It operates on a 2.7 V to 3.6 V supply within a -40 °C to +85 °C range and is housed in a 28-pin QFN package.

Feature Summary

• High-performance pipelined 8051 core executing most instructions in one or two system clocks
• Integrated analog subsystem with 10-bit ADC, comparators, and temperature sensor
• Comprehensive digital peripheral set including UART, SMBus, SPI, and PCA
• Non-intrusive on-chip debug circuitry supporting full-speed in-system debugging

Applications

• Data acquisition systems requiring analog signal processing
• Industrial control applications utilizing serial communication interfaces
• Portable instruments powered by low-voltage supplies
• Sensor interface circuits with real-time clock capabilities

Procurement Notes

Verify component authenticity through authorized distribution channels. Confirm package integrity and pin alignment against the 28-pin QFN specification. Review the datasheet revision history for any errata affecting specific silicon revisions. Ensure design compliance with absolute maximum ratings for voltage and temperature. Validate that the selected variant matches the required memory configuration and peripheral availability.

Selection Notes

Select this model when 8 kB Flash and 1280 bytes RAM are sufficient for application code and data storage. Choose the C8051F313-GM over other family members if the 28-pin QFN package is preferred for space-constrained designs. Verify that the 10-bit ADC resolution meets signal accuracy requirements. Consider the 2.7 V to 3.6 V operating range for battery-powered or regulated low-voltage systems. Evaluate the available I/O count and peripheral set against interface needs.

Part Context

The C8051F313-GM belongs to the C8051F31x series of mixed-signal microcontrollers produced by Silicon Laboratories. This family is characterized by fully integrated analog and digital peripherals on a single chip. The devices utilize the CIP-51 architecture, which offers enhanced performance compared to standard 8051 cores. The series supports in-system programming via ISP, facilitating flexible firmware updates and manufacturing processes.

Replacement Considerations

Other variants within the C8051F31x family, such as the C8051F310, C8051F311, C8051F312, C8051F314, C8051F315, C8051F316, and C8051F317, share similar architectures but differ in memory size, package type, and peripheral configurations. Substitution requires verification of Flash/RAM capacity, package dimensions, and specific peripheral availability like ADC resolution or I/O count.