9. Timers
Rev.3.00 Jul. 19, 2007 page 237 of 532
REJ09B0397-0300
When the upper byte of OCRF is read, the upper-byte data is sent directly to the CPU. Next when
the lower byte is read, the lower-byte data is sent directly to the CPU.
Figure 9.6 shows a TCF read operation when H'AAFF is read from TCF.
CPU
(H'AA)
TEMP
(H'FF)
TCFH
(H'AA)
TCFL
(H'FF)
Internal data bus
Upper byte read
Bus interf
ace
Bus interf
ace
CPU
(H'FF)
TEMP
(H'FF)
TCFH
(AB)
*
TCFL
(00)
*
Internal data bus
Lower byte read
Note:
*
Becomes H'AB00 if counter is incremented once.
Figure 9.6 TCF Read Operation (TCF
→
CPU)
Summary of Contents for F-ZTAT H8 Series
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