M28W640 데이터 시트보기 (PDF) - STMicroelectronics
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M28W640 Datasheet PDF : 54 Pages
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M28W640CT, M28W640CB
Table 17. Write AC Characteristics, Chip Enable Controlled
Symbol Alt
Parameter
tAVAV
tWC Write Cycle Time
Min
tAVEH
tAS Address Valid to Chip Enable High
Min
tDVEH
tDS Data Valid to Chip Enable High
Min
tEHAX
tAH
Chip Enable High to Address
Transition
Min
tEHDX
tDH Chip Enable High to Data Transition
Min
tEHEL
tCPH Chip Enable High to Chip Enable Low Min
tEHGL
Chip Enable High to Output Enable
Low
Min
tEHWH
tWH Chip Enable High to Write Enable High Min
tELEH
tCP Chip Enable Low to Chip Enable High Min
tELQV
Chip Enable Low to Output Valid
Min
tQVVPL (1,2)
Output Valid to VPP Low
Min
tQVWPL
Data Valid to Write Protect Low
Min
tVPHEH (1) tVPS VPP High to Chip Enable High
Min
tWLEL
tCS Write Enable Low to Chip Enable Low Min
tWPHEH
Write Protect High to Chip Enable High Min
Note: 1. Sampled only, not 100% tested.
2. Applicable if VPP is seen as a logic input (VPP < 3.6V).
M28W640C
80
90
80
90
45
50
45
50
0
0
0
0
25
30
25
30
0
0
45
50
80
90
0
0
0
0
200
200
0
0
45
50
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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