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參數(shù)資料
| 型號： | MC80C52CXXX-20/883D |
| 廠商： | TEMIC SEMICONDUCTORS |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 20 MHz, MICROCONTROLLER, CDIP40 |
| 文件頁數(shù)： | 9/60頁 |
| 文件大?。?/td> | 5137K |
| 代理商： | MC80C52CXXX-20/883D |
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17
8266D-MCU Wireless-06/12
ATmega128RFA1
Assembly Code Example
; note: will enter sleep before any pending
; interrupt(s)
C Code Example
__enable_interrupt(); /* set Global Interrupt Enable */
__sleep(); /* enter sleep, waiting for interrupt */
/* note: will enter sleep before any pending interrupt(s) */
7.8.1 Interrupt Response Time
The interrupt execution response for all the enabled AVR interrupts is five clock cycles
minimum. After five clock cycles the program vector address for the actual interrupt
handling routine is executed. During these five clock cycle period, the Program Counter
is pushed onto the Stack. The vector is normally a jump to the interrupt routine, and this
jump takes three clock cycles. If an 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 execution 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 incremented by three, and the I-bit in SREG is set.
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