Short 347 KB PDF about the MMC memory card standard; the bracketed number in the name suggests a duplicate saved copy, and no maker or version is stated.

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

Manual for PIC Basic Pro, the PBP compiler that lets you write firmware for Microchip PIC microcontrollers in a BASIC dialect, filed as a 383 KB PDF.

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

Datasheet for the KB9022Q, an ENE embedded controller widely used on laptop motherboards to manage power sequencing, the keyboard matrix, battery charging and fan…