PIC16C55

The PIC16C5X Series is a family of single-chip CMOS microcontrollers with on-chip EPROM for program storage.The programming specification also applies to ROM products for verification only.

Due to the special architecture of these microcontrollers (12-bit wide instruction word) and the low pin counts (starting at 18 pins), the EPROM programming methodology is different from that of standard (bytewide) EPROMs (e.g., 27C256).

The PIC16C5X Series can be programmed by applying the 12-bit wide data word to the 12 available I/O pins while the address is generated by the on-chip Program Counter. The MCLR/VPP pin provides the programming supply voltage (VPP). Programming/verify chip enable is controlled by the T0CKI pin while the OSC1 pin controls the Program Counter.

This document describes all the programming details of the PIC16C5X Series and the requirements for programming equipment to be used from programming prototypes in the engineering lab up to high volume programming on the factory floor.