Microchip datasheet for the dsPIC30F4013 digital signal controller, a 16-bit device combining a microcontroller with DSP capabilities, in a 5.22 MB PDF.

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

Datasheet for the classic Microchip PIC16C84, an early 18-pin microcontroller with electrically erasable program memory, delivered as a 961 KB PDF.

Full datasheet for the Atmel ATmega8 8-bit AVR microcontroller, supplied as a 2.17 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 PIC16C433, provided as a 2.43 MB PDF file. The document contains the device pinout, memory organisation, peripheral descriptions, instruction…

A 91 KB PDF datasheet covering the AT89C51, the Atmel 8051-compatible microcontroller with flash program memory that turns up in many older industrial and consumer…

Datasheet for the tiny22, a name pointing to the Atmel AVR ATtiny22 microcontroller, provided as a 933-935 KB class PDF of 935 KB.

Datasheet for the Atmel AT89S8252, an 8051-family microcontroller with 8 KB of downloadable flash, 2 KB of EEPROM and an SPI interface used for in-system programming.

Datasheet for the Microchip PIC16C72, an 8-bit OTP or EPROM microcontroller with an analog-to-digital converter, supplied as a 1.13 MB PDF.

Combined PDF datasheet covering the SED1530, SED1531 and SED1532, small at about 67 KB.

Microchip PIC18F4550 datasheet in PDF form, about 6.74 MB. This 8-bit microcontroller is known for its built-in full-speed USB interface, so the document is useful when…

Microchip datasheet for the PIC16F87xA family of 8-bit flash microcontrollers, supplied as a 3.92 MB PDF.

PDF datasheet for the Atmel AT89S51, an 8051-compatible microcontroller with 4 KB of in-system programmable flash and 128 bytes of RAM.

Datasheet for the Atmel AT89C1051U, a 20-pin 8051-compatible microcontroller with 1 KB of flash; the U version adds a UART and second timer compared with the basic…

PDF titled as a midrange reference, filed as a datasheet at 3.31 MB. The name gives no manufacturer or part number, though such titles are often used for reference…

Datasheet stored as a 1.05 MB PDF and named only doc6327, a document number with no component name in it.