HD6475328-CP10 HITACHI [Hitachi Semiconductor], HD6475328-CP10 Datasheet - Page 150

• Manufacturer Part Number: HD6475328-CP10
• Description: original Hitachi CMOS microcomputer unit (MCU)
• Manufacturer: HITACHI [Hitachi Semiconductor]

Figure 7-3 shows the timing of the operation in this mode when the wait count is 1 (WC1 = “0,”
WC0 = “1”) and the WAIT pin is held Low to insert one additional wait state.
ø
WAIT pin
A
RD, AS,
DS (Read)
D –D
WR, DS
(Write)
D –D
19
7
7
* The arrowheads indicate the times at which the WAIT pin is sampled.
–A
0
0
0
T
1
Figure 7-3 Pin Wait Mode
T
2
Off-chip address
132
Write data
Wait
count
T
W
*
WAIT
pin
T
W
*
Read data
T
3