HD64F2149 Datasheet, PDF (358/1035 Pages) Renesas Technology Corp – Hitachi 16-Bit Single-Chip Microcomputer

Contention between FRC Write and Increment: If an FRC increment pulse is generated during
the state after an FRC write cycle, the write takes priority and FRC is not incremented.
Figure 11.19 shows this type of contention.
FRC write cycle
T₁
T₂
ø
Address
FRC address
Internal write signal
FRC input clock
FRC
N
M
Write data
Figure 11.19 FRC Write-Increment Contention
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