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ATmega644PA データシート(PDF) 18 Page - ATMEL Corporation

部品番号 ATmega644PA
部品情報  8-bit Microcontroller with 16/32/64/128K Bytes In-Sytem Programmable Flash
PDF  468 Pages
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メーカー  ATMEL [ATMEL Corporation]
ホームページ  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATmega644PA データシート(HTML) 18 Page - ATMEL Corporation

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18
8152G–AVR–11/09
ATmega164PA/324PA/644PA/1284P
interrupt occurs during execution of a multi-cycle instruction, this instruction is completed before
the interrupt is served. If an interrupt occurs when the MCU is in sleep mode, the interrupt exe-
cution response time is increased by five clock cycles. This increase comes in addition to the
start-up time from the selected sleep mode.
A return from an interrupt handling routine takes five clock cycles. During these five clock cycles,
the Program Counter (three bytes) is popped back from the Stack, the Stack Pointer is incre-
mented by three, and the I-bit in SREG is set.



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