Hitachi H8/3048 Hardware Manual page 393

Single-chip microcomputer
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Contention between TCNT Word Write and Increment: If an increment pulse occurs in the T
state of a TCNT word write cycle, writing takes priority and TCNT is not incremented. See
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figure 10-62.
ø
Address bus
Internal write signal
TCNT input clock
TCNT
Figure 10-62 Contention between TCNT Word Write and Increment
TCNT word write cycle
T
T
T
1
2
3
TCNT address
N
TCNT write data
381
M
3

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