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CHAPTER 5 INTERRUPT/EXCEPTION PROCESSING FUNCTION
(3) Edge detection of INTP30 pin
To set the valid edge of INTP30 pin, write values to INTM7 register. The valid edge can be selected from
the followings.
• Rising edge
• Falling edge
• Both rising and falling edges
The edge detected INTP30 signal becomes the capture trigger of CC3 register and CP3 register of timer
function. The triggers of CC3 register and CP3 register have reverse edges. However, when both edges are
specified, either one trigger is valid.
The block diagram of the edge detection of INTP30 pin is shown below.
INTP30
Noise elimination
φ
φ
/64
φ
/128
φ
/256
SCS1
SCS0
122
Rising edge
detection
Falling edge
f
SMP
detection
User's Manual U11969EJ3V0UM00
CC3 capture trigger
CP3 capture trigger
ES301
ES300
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