C8051F220R

Overview

The C8051F220R is a mixed-signal System on a Chip microcontroller from Silicon Labs, featuring an 8-bit CIP-51 core with up to 25 MIPS throughput at a 25 MHz clock. It integrates 8 kB of in-system programmable Flash memory and 256 bytes of internal data RAM. The device includes an 8-bit SAR ADC with up to 32 input channels and two comparators. Digital peripherals consist of hardware UART and SPI interfaces, three general-purpose 16-bit timers, and a dedicated watchdog timer. It operates within a supply voltage range of 2.7 V to 3.6 V and supports temperatures from -40 °C to +85 °C.

Feature Summary

• Fully integrated mixed-signal SoC with a high-speed pipelined 8051-compatible core
• On-chip JTAG debug circuitry for full-speed non-intrusive in-system debugging without external emulators
• Hardware-implemented UART and SPI serial interfaces for reliable communication
• In-circuit reprogrammable Flash memory suitable for field updates and non-volatile data storage

Applications

• Data acquisition systems requiring analog signal processing
• Industrial control applications utilizing hardware serial communication
• Portable instruments operating within specified voltage and temperature ranges
• Embedded sensor interface nodes

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and temperature grade. Confirm RoHS compliance status as indicated in official datasheets. Ensure the component matches the exact part number designation before procurement to avoid functional discrepancies related to peripheral availability or packaging variations.

Selection Notes

Select this model when an 8-bit resolution ADC is sufficient for the application requirements. Verify that the 256-byte RAM capacity meets the system's stack and variable storage needs. Confirm compatibility with the required I/O pin count and peripheral configuration. Evaluate power consumption specifications against the target application's battery or supply constraints.

Part Context

The C8051F220R belongs to the C8051F2xx family of fully integrated mixed-signal microcontrollers. This series combines a standard 8051 instruction set architecture with modern silicon capabilities, including high-speed operation and extensive on-chip peripherals. The family provides various memory and peripheral configurations to suit different embedded system design requirements.

Replacement Considerations

Consult the manufacturer's product selection guide for alternative models within the C8051F2xx family. Verify pinout compatibility and peripheral overlap before substituting. Check for updated revisions or newer generations that may offer enhanced features or improved availability.