Microchip Technology is a US maker of microcontrollers, analog, memory and connectivity ICs, headquartered in Chandler, Arizona. It produces the PIC and AVR microcontroller families and serial EEPROMs, and has acquired Atmel, Microsemi, Micrel, SST and TelCom, so many legacy part numbers now sit under Microchip.
ATmega32A 8-Bit AVR Microcontroller by Microchip Technology (44-lead TQFP, 40pin DIP, 44-pad QFN Type): datasheet PDF, pinout and specifications.
PIC16F877 28/40-pin 8-Bit CMOS FLASH Microcontrollers by Microchip Technology (PLCC-3, QFP, DIP): datasheet PDF, pinout and specifications.
18F452 Enhanced Flash Microcontroller with 10-Bit A/D by Microchip Technology (PLCC, TQFP 44 Pin Type): datasheet PDF, pinout and specifications.
PIC16F886 ISO SOIC28 Legs maybe bend a little bit Microcontroller by Microchip Technology (PDIP, QFN, SOIC): datasheet PDF, pinout and specifications.