HD6433832S Datasheet, PDF (220/560 Pages) Renesas Technology Corp – single-chip microcomputers

Figure 9.6 shows a TCF read operation when H'AAFF is read from TCF.
Upper byte read
CPU
(H'AA)
Internal data bus
TEMP
(H'FF)
Lower byte read
CPU
(H'FF)
TCFH
(H'AA)
TCFL
(H'FF)
Internal data bus
TEMP
(H'FF)
TCFH
(AB)*
TCFL
(00)*
Note: * Becomes H'AB00 if counter is incremented once.
Figure 9.6 TCF Read Operation (TCF → CPU)
205