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| HD404449 Datasheet, PDF (38/123 Pages) Hitachi Semiconductor – HD404449 SERIES | |||
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HD404449 Series
When the MCU is in watch mode or subactive mode, keep the high level and low level period of
INT0 longer than interrupt frame.
INT0
Sampling
High
Low
Low
Figure 23 Edge Detection
INT0
INT0
Interrupt
frame
A: Low
B: Low
Interrupt
frame
A: High
B: High
(a) High level period
(b) Low level period
Figure 24 Sampling Example
38
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