PSD412A2-C-90UI 查看數據表（PDF） - STMicroelectronics
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PSD412A2-C-90UI Datasheet PDF : 123 Pages
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PSD4XX Family
Microcontroller Interface – AC/DC Parameters (5 V ± 10% Versions)
Write Timing (5 V ± 10%)
Symbol
Parameter
t LVLX
t AVLX
t LXAX
t AVWL
ALE or AS Pulse Width
Address Setup Time
Address Hold Time
Address Valid to
Leading Edge of WR
t SLWL
CS Valid to Leading
Edge of WR
t DVWH
t WHDX
t WLWH
t WHAX
WR Data Setup Time
WR Data Hold Time
WR Pulse Width
Trailing Edge of WR to
Address Invalid
t WHPV
Trailing Edge of WR to
Port Output Valid
t AVPV
Address Input Valid to
Address Output Delay
-70
-90*
-15 EPROM_CMiser
Conditions Min Max Min Max Min Max
ON
Unit
18
20
28
ns
(Note 1)
5
6
10
ns
(Note 1)
7
8
11
ns
(Notes 1 and 3) 18
20
30
ns
(Note 3)
22
25
35
ns
(Note 3)
12
15
22
ns
(Note 3)
5
5
5
ns
(Note 3)
18
20
28
ns
(Note 3)
0
0
0
ns
(Note 3)
25
30
38
ns
In 16-Bit Data Bus
Mode (Note 2)
20
30
38
ns
In 8-Bit Data Bus
Mode (Note 2)
22
32
48
ns
NOTES: 1. Any input used to select an internal PSD4XX function.
2. In multiplexed mode latched address generated from ADIO delay to address output on any Port.
3. WR timing has the same timing as E, DS, LDS, UDS, WRL, WRH signals.
*The -90 speed is available only on Industrial Temperature Range product.
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