I just started using XMEGA32A4. Used to use other AVRs. Anyway, after tested it with simple I/O on/off code, found that I/O pin's rise and fall are very slow, compared to other AVRs. Is it normal? For example, Mega2560 can drive I/O pin at 1MHz with minimal rise and fall time while XMega's I/O pin shows almost saw-teeth waveform at 30KHz. The output's interal drive circuit is configured as totempole and no srew rate limit.
Joined: Sun. Apr 17, 2011
Posts: 30 View posts