C8051F315

Overview

The C8051F315-GM is an 8-bit microcontroller from Silicon Labs featuring a high-speed CIP-51 core operating at up to 25 MHz. It integrates 8 kB of in-system programmable Flash memory and 1280 bytes of internal data RAM. The device utilizes a 28-pin QFN package and supports a supply voltage range of 2.7 V to 3.6 V. Digital peripherals include hardware-enhanced UART, SMBus, SPI, four 16-bit timers, and a 16-bit Programmable Counter Array with five capture/compare modules. It provides 25 general-purpose I/O pins, all 5 V tolerant.

Feature Summary

• High-speed pipelined 8051 architecture executing most instructions in one or two system clocks
• On-chip non-intrusive debug circuitry supporting breakpoints and single stepping without external emulators
• Programmable digital crossbar allowing flexible configuration of peripheral pin assignments
• Integrated internal oscillator with ±2% accuracy enabling crystal-less UART operation

Applications

• Embedded systems requiring in-system programming capabilities
• Industrial control applications utilizing serial communication interfaces
• Portable instruments powered by low-voltage supplies
• Sensor processing nodes with mixed-signal requirements

Procurement Notes

Verify the specific suffix against official documentation to confirm package type and temperature rating. Ensure the ordering code matches the required memory size and I/O count for the target application. Confirm RoHS compliance status through manufacturer datasheets before finalizing procurement specifications.

Selection Notes

Select this component when a fully integrated mixed-signal MCU with USB-free connectivity is required. The C8051F315 offers sufficient Flash and RAM for standard 8-bit logic while providing extensive analog and digital peripherals. Consider the 28-pin QFN form factor for space-constrained designs requiring robust thermal performance.

Part Context

This device belongs to the C8051F31x family of 8/16 kB ISP Flash MCUs. It shares architectural similarities with other members like the C8051F310 and C8051F314 but differs in memory capacity and package options. The family emphasizes high integration and ease of development through comprehensive on-chip resources.

Replacement Considerations

Check for direct pin-compatible alternatives within the C8051F31x series that offer different memory configurations. Verify software compatibility if migrating between devices with varying peripheral counts or interrupt vector layouts.