Sti:OKDatasheet > Semiconductor blad > Microchip Datasheet > PIC16C55A/JW
PIC16C55A/JW spec: "Bits number of 8 Memory configuration 512x12 Memory type EPROM Frequency clock 10 MHz Memory size 512 bit 8-bit CMOS MCU, 512b EPROM, 25b RAM, 20 I/O lines"