Path: OKDatasheet > Semiconductor Datasheet > Microchip Datasheet > PIC16C54A-20I/P
PIC16C54A-20I/P manual: "Bits number of 8 Memory configuration 512x12 Memory type OTP Frequency clock 20 MHz Memory size 512 bit 8-bit CMOS MCU, 512b OTP PROM, 25b RAM, 12 I/O lines - 20MHz"