HD6412340 HITACHI [Hitachi Semiconductor], HD6412340 Datasheet - Page 179
HD6412340
Manufacturer Part Number
HD6412340
Description
H8S/2345 F-ZTAT Hardware Manual
Manufacturer
HITACHI [Hitachi Semiconductor]
Datasheet
1.HD6412340.pdf
(907 pages)
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Figure 6.14 shows an example of wait state insertion timing.
By WAIT pin
By program wait
T
T
T
T
T
T
1
2
w
w
w
3
ø
WAIT
Address bus
AS
RD
Read
Data bus
Read data
HWR, LWR
Write
Data bus
Write data
indicates the timing of WAIT pin sampling.
Note:
Figure 6.14 Example of Wait State Insertion Timing
The settings after a power-on reset are: 3-state access, 3 program wait state insertion, and WAIT
input disabled. When a manual reset is performed, the contents of bus controller registers are
retained, and the wait control settings remain the same as before the reset.
160
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