M28W640EC-ZB 데이터 시트보기 (PDF) - STMicroelectronics
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M28W640EC-ZB Datasheet PDF : 55 Pages
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M28W640ECT, M28W640ECB
Table 17. Write AC Characteristics, Write Enable Controlled
Symbol Alt
Parameter
70
tAVAV
tWC Write Cycle Time
Min 70(3)
tAVWH
tAS Address Valid to Write Enable High
Min 45
tDVWH
tDS Data Valid to Write Enable High
Min 45
tELWL
tCS Chip Enable Low to Write Enable Low
Min
0
tELQV
Chip Enable Low to Output Valid
Min 70(3)
tQVVPL (1,2)
Output Valid to VPP Low
Min
0
tQVWPL
Output Valid to Write Protect Low
Min
0
tVPHWH (1) tVPS VPP High to Write Enable High
Min 200
tWHAX
tAH Write Enable High to Address Transition Min
0
tWHDX
tDH Write Enable High to Data Transition
Min
0
tWHEH
tCH Write Enable High to Chip Enable High
Min
0
tWHEL
Write Enable High to Chip Enable Low
Min 25
tWHGL
Write Enable High to Output Enable Low Min 20
tWHWL tWPH Write Enable High to Write Enable Low
Min 25
tWLWH
tWP Write Enable Low to Write Enable High
Min 45
tWPHWH
Write Protect High to Write Enable High Min 45
Note: 1. Sampled only, not 100% tested.
2. Applicable if VPP is seen as a logic input (VPP < 3.6V).
3. To be characterized.
M28W640EC
85
90
85
90
45
50
45
50
0
0
85
90
0
0
0
0
200
200
0
0
0
0
0
0
25
30
20
30
25
30
45
50
45
50
Unit
10
100 ns
50
ns
50
ns
0
ns
100 ns
0
ns
0
ns
200 ns
0
ns
0
ns
0
ns
30
ns
30
ns
30
ns
50
ns
50
ns
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