HD6433640 HITACHI [Hitachi Semiconductor], HD6433640 Datasheet - Page 277

• Manufacturer Part Number: HD6433640
• Description: H8/3644 Series Hardware Manual
• Manufacturer: HITACHI [Hitachi Semiconductor]

2. Contention between FRC write and increment
If an FRC increment clock signal is generated in the T
of FRC, the write takes precedence and the counter is not incremented. Figure 9.33 shows the
timing.
ø
Address
Internal write
signal
FRC input clock
FRC
Figure 9.33 Contention between FRC Write and Increment
FRC lower byte write cycle
T
1
N
FRC address
T
2
3
state of a write cycle to the lower byte
T
3
FRC write data
M
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