M28W320 データシートの表示（PDF） - STMicroelectronics
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M28W320 Datasheet PDF : 69 Pages
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M28W320FCT, M28W320FCB
DC and AC parameters
Table 18.
Symbol
Write AC Characteristics, Chip Enable Controlled
Alt
Parameter
M28W320FCT, M28W320FCB
70
85
90
10
tAVAV
tWC Write Cycle Time
Min 70
85
90
100
tAVEH
tAS Address Valid to Chip Enable High
Min 45
45
50
50
tDVEH
tDS Data Valid to Chip Enable High
Min 45
45
50
50
tEHAX
tAH
Chip Enable High to Address
Transition
Min
0
0
0
0
tEHDX
tDH Chip Enable High to Data Transition Min
0
0
0
0
tEHEL
tCPH Chip Enable High to Chip Enable Low Min
25
25
30
30
tEHGL
Chip Enable High to Output Enable
Low
Min 25
25
30
30
tEHWH
tWH
Chip Enable High to Write Enable
High
Min
0
0
0
0
tELEH
tCP Chip Enable Low to Chip Enable High Min 45
45
50
50
tELQV
tQVVPL(1)
(2)
Chip Enable Low to Output Valid
Output Valid to VPP Low
Min 70
85
90
100
Min
0
0
0
0
tQVWPL
tVPHEH(1)
Data Valid to Write Protect Low
tVPS VPP High to Chip Enable High
Min
0
0
0
0
Min 200
200
200
200
tWLEL
tCS Write Enable Low to Chip Enable Low Min
0
0
0
0
tWPHEH
Write Protect High to Chip Enable
High
Min 45
45
50
50
1. Sampled only, not 100% tested.
2. Applicable if VPP is seen as a logic input (VPP < 3.6V).
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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