An 804 KB full datasheet for the tiny15, consistent with the Atmel AVR ATtiny15 8-bit microcontroller. No revision appears in the name.

Datasheet PDF of 590 KB covering the tiny4, tiny5, tiny9 and tiny10, matching the Atmel AVR ATtiny4/5/9/10 family of very small 6-pin microcontrollers.

Full family datasheet, 1.66 MB PDF, for the tiny25, tiny45 and tiny85, consistent with the Atmel AVR ATtiny25/45/85 8-pin microcontrollers.

Summary datasheet for the tiny13, a 169 KB PDF whose s suffix identifies the abbreviated edition, matching the Atmel AVR ATtiny13 microcontroller.

Summary datasheet for the mega16, 243 KB PDF, matching the Atmel AVR ATmega16 8-bit microcontroller; the s suffix marks the short edition.

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

Summary datasheet, 249 KB PDF, for a group of mega parts listed as 640, 1281, 1280, 2561 and 2562, matching the Atmel AVR ATmega640/1280/1281/2560/2561 family; the final…

Complete 3.65 MB datasheet for the mega640, 1281, 1280, 2561 and 2560, consistent with the Atmel AVR ATmega640/1280/1281/2560/2561 family, the larger AVR parts in 64 and…

Full datasheet, 1.77 MB PDF, for the mega8515, matching the Atmel AVR ATmega8515 microcontroller, which supports an external memory interface.

A 2.83 MB complete datasheet for the mega64, corresponding to the Atmel AVR ATmega64 microcontroller in a 64-pin package. No revision is stated in the name.

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…

Full datasheet for the Atmel ATmega8 8-bit AVR microcontroller, supplied as a 2.17 MB PDF.

Summary datasheet for the ATmega164, ATmega324 and ATmega644 family of AVR microcontrollers, a compact 297 KB PDF.

Complete datasheet for the ATmega162 AVR microcontroller in a 2.62 MB PDF. The document describes pin assignments, the external memory interface, timers, USARTs, the SPI…

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

Short summary edition of the ATmega8 AVR microcontroller datasheet, only 200 KB in PDF form.

Datasheet for the older ATmega161 AVR microcontroller, a 1.65 MB PDF document. It details pin functions, the memory map, peripherals such as timers and UARTs…

Condensed summary datasheet for the ATmega64 AVR microcontroller, a 211 KB PDF. The short version usually contains the feature overview, pinout for the available…

Full datasheet for the ATmega169 AVR microcontroller, distributed as a 2.97 MB PDF. This part includes an integrated LCD controller, and the document covers its segment…

Summary datasheet for the ATmega406 AVR microcontroller, a 179 KB PDF. The ATmega406 is aimed at smart battery management, so this part often turns up inside laptop and…

Summary edition of the ATmega8515 AVR microcontroller datasheet, a 182 KB PDF. It usually lists core features, pin configurations for each package, pin descriptions and…

Complete datasheet for the ATmega16 AVR microcontroller in a 2.73 MB PDF. Chapters cover the pinout, memory, clock options, timers, ADC, USART, SPI, TWI, JTAG, fuse and…

Short summary datasheet for the ATmega162 AVR microcontroller, a 195 KB PDF. Summary editions normally include the feature list, pin diagrams for available packages, pin…

Datasheet for the legacy ATmega163 AVR microcontroller, a 2.15 MB PDF file. It documents the pin layout, memory organisation, timers, ADC, serial interfaces, programming…

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

Complete datasheet for the ATmega164, ATmega324 and ATmega644 AVR microcontrollers, a 2.66 MB PDF.

Datasheet for the ATmega128A AVR microcontroller, a 2.68 MB PDF. The A suffix denotes the revised version of the ATmega128, and the document covers its 64-pin pinout…

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…

Datasheet for the early ATmega103 AVR microcontroller, a 1.99 MB PDF. It documents the 64-pin pinout, memory, peripherals, programming modes and electrical…

Complete datasheet for the ATmega165 AVR microcontroller, a 3.15 MB PDF. The document covers the pinout, memory, clock system, timers, USI, USART, ADC, JTAG, fuse bits…

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

Short summary datasheet for the ATmega128 AVR microcontroller, 235 KB in PDF format. It generally contains the feature overview, 64-pin package pinout, pin descriptions…

Full datasheet for the ATmega406 AVR microcontroller, a 1.68 MB PDF. This chip is designed for smart lithium battery packs, integrating cell balancing, voltage and…

Complete datasheet for the ATmega8535 AVR microcontroller in a 2.44 MB PDF. It covers the 40-pin and surface-mount pinouts, memory, timers, ADC, USART, SPI, TWI, fuse…

Summary edition of the ATmega165 AVR microcontroller datasheet, a 252 KB PDF. Short versions usually present the feature list, pin configuration, pin descriptions…

Summary datasheet for the ATmega8535 AVR microcontroller, 217 KB in PDF format. The short edition generally lists features, pinouts for the DIP and surface-mount…

Full datasheet for the Atmel ATmega169 8-bit AVR microcontroller, with the name indicating coverage of silicon revisions A through E.

Summary edition of the ATmega169 datasheet, as the trailing s in the name suggests, covering revisions A to E of this Atmel AVR microcontroller with built-in LCD driver.

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

Combined datasheet for the Atmel ATmega48, ATmega88 and ATmega168 AVR microcontrollers, which share one pin-compatible family and differ mainly in flash, EEPROM and SRAM…