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

Datasheet for the Microchip PIC18F452, an enhanced flash 8-bit microcontroller, in a 5.44 MB PDF.

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…

Datasheet for the Microchip PIC16F84A, a classic 18-pin flash microcontroller with data EEPROM, provided as a 1.46 MB PDF.

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…

Microchip datasheet for the PIC16C745 and PIC16C765, PIC16 microcontrollers with an integrated low-speed USB interface, supplied as a 4.83 MB PDF.

PDF datasheet of 2.58 MB for the Microchip PIC16C5x series, the original baseline line of small 8-bit OTP or EPROM controllers found in older appliances, remotes and…

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

Complete datasheet for the Atmel ATmega128, a 64-pin 8-bit AVR microcontroller with 128 KB of flash, EEPROM, SRAM, two USARTs and JTAG.

PDF bearing the Texas Instruments literature number SDLS111, a code from the series TI uses for its legacy TTL logic datasheets.

Renesas datasheet for the ISL6251A, dated 2004-11-03 and supplied as a 1.05 MB PDF. The ISL6251A is a battery charger controller often found in older laptops, regulating…