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 17. Write AC Characteristics, Write Enable Controlled
Symbol Alt
Parameter
M28W320FCT, M28W320FCB
70
85
90
10
tAVAV
tWC Write Cycle Time
Min 70
85
90
100
tAVWH
tAS Address Valid to Write Enable High
Min 45
45
50
50
tDVWH
tDS Data Valid to Write Enable High
Min 45
45
50
50
tELWL
tCS Chip Enable Low to Write Enable Low
Min
0
0
0
0
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
tVPHWH(1)
Output Valid to Write Protect Low
tVPS VPP High to Write Enable High
Min
0
0
0
0
Min 200 200 200 200
tWHAX
tAH Write Enable High to Address Transition Min
0
0
0
0
tWHDX
tDH Write Enable High to Data Transition
Min
0
0
0
0
tWHEH
tCH Write Enable High to Chip Enable High Min
0
0
0
0
tWHEL
Write Enable High to Chip Enable Low Min 25
25
30
30
tWHGL
Write Enable High to Output Enable Low Min 20
20
30
30
tWHWL tWPH Write Enable High to Write Enable Low Min
25
25
30
30
tWLWH
tWP Write Enable Low to Write Enable High Min
45
45
50
50
tWPHWH
Write Protect High to Write 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
ns
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