Short-form datasheet, 189 KB PDF, for the tiny25, tiny45 and tiny85, matching the Atmel AVR ATtiny25/45/85 family of 8-pin microcontrollers that differ mainly in flash…

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.

Instruction set reference in PDF format, 758 KB; the name alone does not specify the architecture, though it sits alongside AVR documents and most likely is the Atmel…

Datasheet labelled AT89C8252, an Atmel 8051-family microcontroller document of 316 KB; the same size as the AT89S8252 sheet suggests related or identical content, so…

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 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.

Intel 7 Series chipset Platform Controller Hub datasheet in PDF form, 687 KB, apparently one part of a larger document set given the number in the name.

Microchip datasheet for the PIC16F8x devices, the classic 18-pin flash and EEPROM microcontrollers of the PIC16F83 and PIC16F84 type, in a 1.97 MB PDF.

PDF datasheet, 2.54 MB, for the Microchip PIC16F72 flash microcontroller with an 8-bit ADC and capture, compare and PWM module.

A 5.14 MB PDF datasheet covering the Microchip PIC18Cxx2 group of microcontrollers, where xx stands for several family members sharing one document.

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

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

Preliminary datasheet for the Atmel AT91SAM7S series of ARM7TDMI-based flash microcontrollers, a 10.5 MB PDF.

Datasheet for the Atmel AT89S52, one of the most popular 8051-compatible microcontrollers, with 8 KB of ISP flash, 256 bytes of RAM and three 16-bit timers.

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…

Programming specification from Microchip describing how to program the flash and data EEPROM memory of PIC16F87X microcontrollers, supplied as a 201 KB PDF.

Datasheet for the KB9022Q, an ENE Technology keyboard and embedded controller found on many notebook motherboards, in a compact 137 KB PDF.

Datasheet for the ITE IT8512E-F embedded controller, a 1.99 MB PDF. Chips of this family serve as the keyboard and embedded controller on many notebook motherboards…

Full family datasheet, 1.60 MB PDF, covering the tiny24, tiny44 and tiny84, consistent with the Atmel AVR ATtiny24/44/84 microcontrollers.

Datasheet in PDF form (127 KB) for the AT89C52, an Atmel microcontroller from the 8051-compatible family with on-chip flash program memory.

Datasheet in PDF form for the Atmel AT89C2051, a 20-pin 8051-family microcontroller with 2 KB of flash, 128 bytes of RAM and a built-in analog comparator on P1.0 and…

Datasheet for the ENE KB9012QF, a keyboard and embedded controller widely fitted to laptops, as a 3.65 MB PDF.

PDF datasheet, about 253 KB, for the KB9028Q, an ENE keyboard and embedded controller found on many notebook mainboards.

PDF datasheet covering the NXP LPC1768, LPC1766, LPC1765 and LPC1764 ARM Cortex-M3 microcontrollers, about 313 KB in size.