HD6433044 Hitachi Semiconductor, HD6433044 Datasheet - Page 388

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HD6433044

Manufacturer Part Number
HD6433044
Description
(HD64 Series) Hitachi Single-Chip Microcomputer
Manufacturer
Hitachi Semiconductor
Datasheet

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10.5 Interrupts
The ITU has two types of interrupts: input capture/compare match interrupts, and overflow
interrupts.
10.5.1 Setting of Status Flags
Timing of Setting of IMFA and IMFB at Compare Match: IMFA and IMFB are set to 1 by a
compare match signal generated when TCNT matches a general register (GR). The compare
match signal is generated in the last state in which the values match (when TCNT is updated from
the matching count to the next count). Therefore, when TCNT matches a general register, the
compare match signal is not generated until the next timer clock input. Figure 10-57 shows the
timing of the setting of IMFA and IMFB.
ø
TCNT input
clock
TCNT
GR
Compare
match signal
IMF
IMI
Figure 10-57 Timing of Setting of IMFA and IMFB by Compare Match
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