Fujitsu MB90480 Series Hardware Manual page 197

■
Non-multiplex mode
Figure 7.5-7 shows a timing chart of the non-multiplex-mode hold function in the external data
bus 16-bit mode.
AD15 to 08
AD07 to 00
■
Multiplex mode
Figure 7.5-8 shows a timing chart of the multiplex-mode hold function in the external data bus
16-bit mode.
AD15 to 08
AD07 to 00
Figure 7.5-7 Timing chart of hold function (non-multiplex mode)
Read cycle
P57/CLK
P54/HRQ
P55/HAK
P53/WRH
P52/WRL
P51/RD
P50/ALE
A23 to 16 (Address)
A15 to 08
(Address)
A07 to 00 (Address)
D15 to 08/
D07 to 00/
Read data
Figure 7.5-8 Timing chart of hold function (multiplex mode)
Read cycle
P57/CLK
P54/HRQ
P55/HAK
P53/WRH
P52/WRL
P51/RD
P50/ALE
(Address)
A23 to 16
(Port data)
A15 to 08
(Port data)
A07 to 00
D15 to 08/
D07 to 00/
Read data
Hold cycle
Hold cycle
CHAPTER 7 MODE SETTING
Write cycle
(Address)
(Address)
(Address)
Write data
Write cycle
(Address)
(Address)
(Address)
Write data
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