Complete datasheet for the ATmega8535 AVR microcontroller in a 2.44 MB PDF. It covers the 40-pin and surface-mount pinouts, memory, timers, ADC, USART, SPI, TWI, fuse and lock bits and electrical characteristics. On the bench it helps locate supply, reset and oscillator pins, verify ADC wiring and check signal levels on a faulty board. When reprogramming via ISP, read and keep the original flash and fuse values first, because incorrect clock fuses can leave the chip unresponsive.
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.
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