C8051F315-GMR

Overview

The C8051F315-GMR is an 8-bit microcontroller from the Silicon Labs C8051F31x family, featuring a high-speed pipelined 8051 core capable of up to 25 MIPS throughput at a 25 MHz clock frequency. It integrates 8 kB of in-system programmable Flash memory and 1280 bytes of internal data RAM. The device operates within a supply voltage range of 2.7 V to 3.6 V and supports a temperature range of –40 °C to +85 °C. It is housed in a 28-pin QFN package.

Feature Summary

• Features a fully 8051 compatible CIP-51 core with improved instruction execution throughput.
• Includes on-chip debug circuitry for full-speed, non-intrusive in-system debugging without external emulators.
• Integrates hardware-enhanced serial ports including UART, SMBus, and SPI.
• Provides a Programmable Counter Array (PCA) with capture/compare modules and PWM capabilities.

Applications

• In-system programming applications requiring ISP Flash capabilities
• Embedded systems utilizing on-chip debug functionality
• Industrial control environments operating within specified temperature ranges

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific GMR suffix indicates tape and reel packaging if required for automated assembly. Check current lifecycle status as this series may be marked Not Recommended for New Designs. Ensure compatibility with existing PCB footprints for the 28-pin QFN package before procurement.

Selection Notes

Select this model when 8 kB Flash and 1280 bytes RAM are sufficient for application logic. Choose over variants with ADCs if analog conversion is not needed, as the F315 lacks the 12-bit ADC found in other family members. Verify that the 28-pin QFN package aligns with board space constraints. Consider power consumption requirements against the typical 5 mA active current specification.

Part Context

This component belongs to the C8051F31x family of mixed-signal microcontrollers. The family shares a common architecture but varies in memory size and peripheral availability. The C8051F315 specifically omits the 12-bit ADC present in models like the F310 or F311, focusing instead on digital I/O and communication interfaces. It utilizes the standard Silicon Labs C2 interface for programming and debugging.

Replacement Considerations

Public confirmed substitute part numbers: None identified in verified documentation.