C8051F220-GQR
Silicon Labs
The C8051F220-GQR is an 8-bit microcontroller based on the 8051 core, featuring 8KB of Flash memory, 256 bytes of RAM, and operating at 25MHz. It comes in a 48-TQFP surface mount package with 32 I/O pins and integrated peripherals including SPI and UART/USART.