Family manual for the Atmel AVR XMEGA A series, a 4.96 MB PDF that explains the CPU, DMA, event system, clocks, power management, timers, USART, SPI, TWI, ADC, DAC, external bus interface and PDI/JTAG programming at register level. It is the companion to the A1, A3 and A4 device datasheets, which hold pinouts and electrical figures. Useful for decoding fuse and clock settings, understanding firmware behaviour and preparing a programmer. Always cross-check pin data in the specific device datasheet.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @datasheet. Enginerys does not host this file.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.