Figure 9.4 Write Access To Tcr (Cpu → Tcf) - Renesas H8/3847R Series Hardware Manual

Section 9 Timers
1. Write Access
Write access to the upper byte results in transfer of the upper-byte write data to TEMP. Next,
write access to the lower byte results in transfer of the data in TEMP to the upper register byte,
and direct transfer of the lower-byte write data to the lower register byte.
Figure 9.4 shows an example in which H'AA55 is written to TCF.
Write to upper byte
CPU
(H'AA)
Write to lower byte
CPU
(H'55)
Rev. 6.00 Aug 04, 2006 page 286 of 680
REJ09B0145-0600
Bus
interface
Bus
interface
Figure 9.4 Write Access to TCR (CPU → → → → TCF)
Module data bus
TEMP
(H'AA)
TCFH TCFL
( ) (
Module data bus
TEMP
(H'AA)
TCFH TCFL
(H'AA) (H'55)
)