HD6433045 HITACHI [Hitachi Semiconductor], HD6433045 Datasheet - Page 394

• Manufacturer Part Number: HD6433045
• Description: Hitachi Single-Chip Microcomputer
• Manufacturer: HITACHI [Hitachi Semiconductor]

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Address bus
Internal write signal
TCNT input clock
TCNTH
TCNTL
Contention between TCNT Byte Write and Increment: If an increment pulse occurs in the T
or T
TCNT byte that was not written retains its previous value. See figure 10-63, which shows an
increment pulse occurring in the T
3
state of a TCNT byte write cycle, writing takes priority and TCNT is not incremented. The
Figure 10-63 Contention between TCNT Byte Write and Increment
T
TCNTH byte write cycle
1
N
X
2
state of a byte write to TCNTH.
TCNTH address
TCNT write data
T
2
X + 1
382
T
3
M
X
2