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…

Atmel datasheet for the AT89C4051, a compact 20-pin 8051-compatible microcontroller with 4 KB of flash and an onboard analog comparator.

PDF datasheet for the PH320240T-001-I33Q LCD module, 336 KB. The 320240 group indicates a 320 x 240 dot graphic display, and the trailing code identifies a particular…

Datasheet for the AM2301 digital temperature and humidity sensor, a 577 KB PDF. The AM2301, also sold as DHT21, uses a single-wire bus with a proprietary timing…

Microchip datasheet for the PIC18Fxx8 family, the largest file in this set at 7.43 MB, where xx marks the different memory and pin-count variants.

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…

Microchip datasheet for the PIC12F629 and PIC12F675, 8-pin flash microcontrollers, in a 4.81 MB PDF.

PDF datasheet for the Atmel AT89C1051, the smallest member of the 20-pin 8051-compatible family, offering 1 KB of flash, 64 bytes of RAM and an analog comparator.