Family manual for the Atmel AVR XMEGA D series, a 5.25 MB PDF describing the core, memories, clock system, power management, ports, timers, communication peripherals…

Datasheet for the MAX233, a Maxim RS-232 line driver and receiver that needs no external charge-pump capacitors, running from a single 5 V supply.

A general PIC reference document in PDF form, 869 KB in size. The name gives only a generic book title and no specific device, author or edition, so its exact contents…