HD6475348R Datasheet, PDF (225/487 Pages) Hitachi Semiconductor – Single-Chip Microcomputer

Figure 10-13 shows this type of contention.
Write cycle: CPU writes to lower byte of FRC
T1
T2
T3
ø
Internal address bus
Internal write signal
FRC address
FRC clock pulse
FRC
N
M
Write data
Figure 10-13 FRC Write-Increment Contention
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