W79E825A Datasheet, PDF (69/127 Pages) Winbond – 8-BIT MICROCONTROLLER

W79E825A/824A/823B/822B Data Sheet
12.4 Interrupt Inputs
The W79E825 series have 13 interrupts source, and two individual interrupt inputs sources, one is for
IE0, IE1, BOF, KBF, WDT, ADC, CMF1 and CMF2, and other is IF0, IF1, RI+TI ,SI and BKF. Two
interrupt inputs are identical to those present on the standard 80C51 microcontroller as show in below
figures.
If an external interrupt is enabled when the W79E825 series are put into Power Down or Idle mode,
the interrupt will cause the processor to wake up and resume operation.
IE0
EX0
IE1
EX1
BOF
EBO
KBF
EKB
ADCI
EADC
WDT
EWDI
CM1
EC1
CM2
EC2
Wakeup
(If in Power Down)
EA
Interrupt
To CPU
Figure 12-1: Interrupt Sources that can wake up from Power Down Mode
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Publication Release Date: February 21, 2008
Revision A9