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CHAPTER 10 EXTERNAL INTERRUPT CIRCUIT 1 (EDGE)
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Block Diagram of Circuitry Terminating at the Pins Associated with External Interrupt
Circuit 1
Figure 10.3-1 Block Diagram of Circuitry Terminating at the Pins Associated with External Interrupt Circuit 1
Note:
When the ON setting of the pull-up resistor is selected by the pull-up setting register, the pin state will
be "H" level (pull-up state) rather than Hi-Z during stop mode (SPL = 1). During a reset, however, the
pull-up is invalid and the pin remains at Hi-Z.
DDR
N-ch
PDR
(SPL=1)
INT10,INT11
INT12
PUL
P34/TO/INT10
P35/INT11
P36/INT12
P-ch
PDR
P34/TO/INT10
P35/INT11
P36/INT12
Internal data bus
PDR read
PDR read
(when read-modify-write is
performed)
Output
latch
PDR write
DDR write
PUL read
PUL write
Stop mode (SPL=1)
Stop mode
Output from
peripheral
Output
from
peripheral
enable
Output occurring
from peripheral
External interrupt
enable
Pull-up
resistor
Pins