HD6432345 Datasheet, PDF (381/907 Pages) Hitachi Semiconductor – H8S/2345 F-ZTAT Hardware Manual

Contention between Buffer Register Write and Compare Match: If a compare match occurs in
the T2 state of a TGR write cycle, the data transferred to TGR by the buffer operation will be the
data prior to the write.
Figure 9.52 shows the timing in this case.
ø
Address
Write signal
Compare
match signal
Buffer
register
TGR
TGR write cycle
T1
T2
Buffer register
address
Buffer register write data
N
M
N
Figure 9.52 Contention between Buffer Register Write and Compare Match
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