C8051F022

Overview

The C8051F022 is a fully integrated mixed-signal System-on-a-Chip MCU from Silicon Labs, featuring a high-speed pipelined 8051-compatible core operating at up to 25 MHz with 25 MIPS throughput. It includes 64 kB of in-system programmable Flash memory and 4352 bytes of internal data RAM. The device integrates a 10-bit SAR ADC with up to 100 ksps throughput, two 12-bit DACs, two analog comparators, and a precision voltage reference. Digital peripherals include hardware SMBus, SPI, and dual UART interfaces, alongside five general-purpose 16-bit timers and a Programmable Counter Array.

Feature Summary

• High-performance 8051 core with pipelined architecture for fast instruction execution
• Integrated 10-bit ADC with programmable gain amplifier and multiplexer
• Dual 12-bit DACs capable of timer-synchronized jitter-free waveform generation
• On-chip JTAG debug interface supporting full-speed non-intrusive system debugging

Applications

• Portable medical equipment
• Weigh scales
• Test equipment
• Fiber optic systems

Procurement Notes

Verify the specific revision level against the latest Silicon Laboratories datasheet before finalizing designs. Confirm package availability as the component may be subject to End-of-Life status or Last Time Buy announcements. Ensure development tools such as the C8051F02x Development Kit are compatible with the target firmware environment.

Selection Notes

Select this model when a 10-bit ADC resolution is sufficient compared to the 12-bit variant. It provides 32 digital I/O pins suitable for moderate pin-count applications. Verify that the 64 kB Flash capacity meets program storage requirements. Check if the external memory interface is needed for additional address space expansion.

Part Context

This microcontroller belongs to the C8051F02x family of mixed-signal SoCs. It shares the same core architecture and peripheral set as the C8051F020, F021, and F023 models. The primary distinction lies in the ADC resolution and specific pin configurations. It utilizes standard 64-pin TQFP packaging options.

Replacement Considerations

Silicon Laboratories recommends the EFM8BB31F64G-QFN32 as a replacement for this part due to its End-of-Life status.