Condensed 235 KB datasheet for the mega32, corresponding to the Atmel AVR ATmega32 microcontroller, with the s suffix indicating the summary version.

Summary datasheet for the ATmega325, ATmega3250, ATmega645 and ATmega6450 AVR microcontrollers, a 231 KB PDF.

Full datasheet for the ATmega32 AVR microcontroller in PDF form, 2.70 MB. It describes the pinout, memory, clock options, timers, ADC, USART, SPI, TWI, JTAG interface…

Full datasheet for the ATmega329, ATmega3290, ATmega649 and ATmega6490 AVR microcontrollers, a 3.27 MB PDF.

Short-form summary datasheet covering the Atmel ATmega329, ATmega3290, ATmega649 and ATmega6490 microcontrollers, AVR parts with integrated LCD controllers.

Full datasheet covering the ATmega325, ATmega3250, ATmega645 and ATmega6450 AVR microcontrollers, a 2.69 MB PDF.

Datasheet in PDF form for the Atmel ATmega323, an older 8-bit AVR microcontroller with in-system programmable flash, EEPROM, SRAM and JTAG interface.

Datasheet PDF of 3.36 MB covering the mega16, mega32 and mega64 M1 variants, matching the Atmel AVR ATmega16M1/32M1/64M1 family aimed at automotive and motor control use…