C8051F220

Overview

The C8051F220 is an 8-bit mixed-signal microcontroller from Silicon Labs, part of the C8051F2xx family. It features a CIP-51 core with up to 25 MIPS throughput at a 25 MHz clock speed. The device includes 8 kB of in-system programmable Flash memory and 256 bytes of internal data RAM. Key peripherals include an 8-bit SAR ADC with up to 32 channels and 100 ksps conversion rate, two analog comparators, hardware UART, SPI bus, three 16-bit timers, and a dedicated watchdog timer. It operates on a 2.7 V to 3.6 V supply within a -40°C to +85°C temperature range.

Feature Summary

• Integrated 8-bit SAR ADC with multi-channel input multiplexer and configurable window detector
• Hardware-implemented UART and SPI serial interfaces for reliable communication
• On-chip JTAG debug circuitry enabling full-speed, non-intrusive in-system debugging without external emulators
• In-circuit reprogrammable Flash memory supporting both code execution and non-volatile data storage

Applications

• Data acquisition systems requiring analog signal monitoring
• Industrial control applications utilizing hardware serial communication
• Sensor interface circuits with comparator-based threshold detection
• Embedded systems requiring in-system programming capabilities

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm package integrity and pin alignment against the 48-TQFP specification. Check manufacturing date codes and lot numbers for traceability requirements. Ensure compliance with relevant environmental standards such as RoHS status indicated in official documentation before integration into production.

Selection Notes

Select this model when an 8-bit resolution ADC is sufficient for the application, distinguishing it from the 12-bit 'F206 variant. Consider the 256-byte RAM limitation compared to larger variants like the 'F206 or 'F226 if extensive data buffering is required. Verify that the 48-pin TQFP package fits the board layout constraints. Ensure the 2.7 V to 3.6 V supply voltage aligns with the system power architecture.

Part Context

The C8051F220 belongs to the C8051F2xx series of fully integrated mixed-signal System-on-Chip MCUs by Silicon Labs. This family shares a common 8051-compatible core and 8 kB Flash memory base but varies in ADC resolution, RAM size, and I/O count. The 'F220 specifically offers 8-bit ADC performance and 32 general-purpose I/O pins in a 48-pin TQFP package.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.