C8051F313-GMR

Overview

The C8051F313-GMR 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 a 25 MHz clock. It integrates 16 kB of in-system programmable Flash and 1280 bytes of internal data RAM. The device includes a 12-bit ADC supporting up to 200 ksps conversion rates and up to 21 external inputs. It operates within a supply voltage range of 2.7 V to 3.6 V and supports temperatures from –40 °C to +85 °C. The component is housed in a 28-pin QFN package.

Feature Summary

• Features a pipelined CIP-51 architecture that executes most instructions in one or two system clocks for high processing efficiency.
• Includes on-chip debug circuitry enabling full-speed, non-intrusive in-system debugging without requiring external emulators.
• Integrates hardware-enhanced serial communication interfaces including UART, SMBus, and SPI for versatile connectivity.
• Provides a programmable digital I/O crossbar allowing flexible pin configuration with 5 V tolerant ports.

Applications

• Industrial control systems requiring robust analog signal processing
• Embedded sensor interface applications utilizing integrated temperature sensors
• Battery-powered devices benefiting from low-power stop mode operation
• General-purpose embedded controllers needing in-system programmability

Procurement Notes

Verify component authenticity through authorized distributors as this part is marked Not Recommended for New Designs. Confirm package integrity upon receipt, specifically checking for damage to the QFN-28 leads. Ensure design compatibility with the specified 2.7 V to 3.6 V operating voltage range. Review the latest datasheet revision for any errata or specific handling instructions related to moisture sensitivity levels before assembly.

Selection Notes

Select this component when a fully static 8051 architecture with high integration is required. It is suitable for designs needing onboard analog peripherals like a 12-bit ADC and comparators. Consider this MCU for cost-sensitive applications where in-system programming reduces tooling costs. Evaluate power consumption requirements against the typical 5 mA active current at maximum speed.

Part Context

This microcontroller belongs to the C8051F31x series, which offers varying memory sizes and peripheral configurations across different suffixes. The C8051F313 variant specifically provides 16 kB Flash and 1280 bytes RAM. It shares the same core architecture and analog features with siblings like the C8051F310 and C8051F311, differing primarily in memory capacity and available I/O pins.

Replacement Considerations

Silicon Labs recommends transitioning to newer families such as the EFM8BB5 series for new designs due to the end-of-life status of the C8051F31x line. Verify pinout compatibility and peripheral mapping when migrating to alternative MCUs to ensure minimal software refactoring is required.

FAQ

Does the C8051F313-GMR include an internal voltage reference?

No, the C8051F313 does not include an internal voltage reference generator; this feature is only available on C8051F310/1/2/6 variants.

What is the maximum sampling rate of the ADC on this device?

The integrated 12-bit ADC supports a maximum sampling rate of up to 200 ksps.

Can the C8051F313 operate without an external crystal?

Yes, it utilizes a programmable internal oscillator with ±2% accuracy that supports crystal-less UART operation.