This document is the user guide for the MPLAB C30 C compiler by Microchip Technology Inc. It provides information on Microchip's quality system processes in the areas of PICmicro 8-bit microcontrollers, KEELOQ hopping code devices, serial EEPROM, microcontroller peripherals, non-volatile memory, and analog products. It also mentions the company's quality system certification for design and production of development systems.