C8051F814-GMR

Overview

The C8051F814-GMR is an 8-bit microcontroller from the Silicon Labs C8051F80x-83x family, featuring a high-speed pipelined 8051 core operating at up to 25 MHz. It integrates 8 kB of in-system programmable Flash memory and 512 bytes of internal data RAM. The device includes a capacitance-to-digital converter supporting up to 16 channels with 16-bit resolution, a 10-bit ADC with up to 500 ksps throughput, and a programmable comparator. Digital peripherals consist of hardware-enhanced UART, SMBus, SPI, three 16-bit timers, and a Programmable Counter Array. It operates on a supply voltage range of 1.8 V to 3.6 V and supports multiple package options including QSOP-24.

Feature Summary

• Integrated capacitance-to-digital converter for capacitive touch sensing applications
• High-speed 8051 core with pipelined architecture for efficient instruction execution
• On-chip debug circuitry enabling non-intrusive in-system debugging without external emulators
• Comprehensive analog peripherals including a 10-bit ADC and programmable comparator

Applications

• Capacitive touch sensing interfaces such as buttons, sliders, and wheels
• Portable devices requiring low-voltage operation and integrated power management
• Industrial control systems utilizing serial communication protocols
• Battery-powered embedded applications needing efficient power modes

Procurement Notes

Verify component authenticity through authorized distribution channels. Confirm that the specific ordering suffix matches the required package type and temperature rating. Check current lifecycle status as this family may be designated Not Recommended for New Designs. Ensure compatibility with existing design tools and development kits before procurement.

Selection Notes

Select this model when capacitive sensing capabilities are required alongside standard 8-bit MCU functions. Consider the available package options such as QSOP-24 or QFN-20 based on board space constraints. Evaluate the 1.8 V to 3.6 V supply range against system power requirements. Review the pinout assignments for I/O and analog functions to ensure proper interface mapping.

Part Context

This component belongs to the C8051F80x-83x mixed-signal ISP Flash MCU family from Silicon Labs. The family shares a common architectural foundation with variations in memory size and peripheral configurations. The C8051F814 variant specifically provides 8 kB of Flash and integrates the capacitance sense module. It is part of a broader ecosystem supported by 8-bit Microcontroller Studio tools.

Replacement Considerations

Consult the product selection guide within the datasheet for alternative part numbers within the C8051F80x-83x family. Verify pin compatibility and memory specifications when considering cross-model replacements. Note that the family is marked Not Recommended for New Designs; evaluate long-term availability for existing projects.