CXD1803AQ/AR
AC Characteristics (VDD = 5 V±10%, VSS = 0 V, Topr = –20 to 75°C, output load = 50 pF)
The values in parentheses on the tables for VDD = 3.5 V, VSS = 0 V, Topr = –20 to 75°C, output load = 50 pF.
Those without parentheses for VDD = 5 V±10% and 3.5 V.
1. Sub CPU Interface
(1) Read
A0
XCS
XRD
D7-0
Trrl
Tsar
Tdrd
Thar
Tfrd
Item
Address setup time (for XCS & XRD ↓)
Address hold time (for XCS & XRD ↑)
Data delay time (for XCS & XRD↓)
Data float time (for XCS & XRD ↑)
Low level XRD pulse width
Note) "&" indicates "AND".
(2) Write
A0
XCS
XWR
D7-0
Tsaw
Symbol
Min.
Typ.
Max.
Unit
Tsar
30 (70)
ns
Thar
20 (50)
ns
Tdrd
60 (100)
ns
Tfrd
0
15 (25)
ns
Trrl
100 (150)
ns
Twwl
Thaw
Tsdw
Thdw
Item
Symbol
Min.
Typ.
Max.
Unit
Address setup time (for XCS & XWR ↓)
Tsaw
30 (70)
ns
Address hold time (for XCS & XWR ↑)
Thaw
20 (50)
ns
Data setup time (for XCS & XWR ↓)
Tsdw
40 (70)
ns
Data hold time (for XCS & XWR ↑)
Thdw
10 (30)
ns
Low level XWR pulse width
Twwl
50 (80)
ns
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