HD6433935 Hitachi, HD6433935 Datasheet - Page 220
HD6433935
Manufacturer Part Number
HD6433935
Description
8-Bit MICROCONTROLLER
Manufacturer
Hitachi
Datasheet
1.HD6433935.pdf
(521 pages)
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2. Read access
In access to TCF, when the upper byte is read the upper-byte data is transferred directly to the
CPU and the lower-byte data is transferred to TEMP. Next, when the lower byte is read, the
lower-byte data in TEMP is transferred to the CPU.
In access to OCRF, when the upper byte is read the upper-byte data is transferred directly to the
CPU. When the lower byte is read, the lower-byte data is transferred directly to the CPU.
Figure 9-5 shows an example in which TCF is read when it contains H'AAFF.
208
Read upper byte
Read lower byte
Note: * H'AB00 if counter has been updated once.
(H'AA)
(H'FF)
CPU
CPU
Figure 9-5 Read Access to TCF (TCF
Bus
interface
Bus
interface
(H'AA)
TCFH
TCFH
(AB)*
TEMP
(H'FF)
TEMP
(H'FF)
CPU)
Module data bus
Module data bus
(H'FF)
TCFL
TCFL
(00)*
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