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Datasheet

ManualsBrandsMICROCHIP TECHNOLOGY ManualsMicrocontrollers, Microprocessors & QuartzesEmbedded microcontroller TQFP 64 (14x14) 8-Bit 16 MHz I/O number 48
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28
7593LS–AVR–09/12
AT90USB64/128
1. Asynchronous timer interrupt wake up from sleep generates multiple interrupts
If the CPU core is in sleep and wakes-up from an asynchronous timer interrupt and then go
back in sleep again it may wake up multiple times.
Problem fix/workaround
A softw are w orkaround is to w ait w ith performing the sleep instruction until
TCNT2>OCR2+1.