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M28W640FCB Datasheet(PDF) 42 Page - STMicroelectronics

Part # M28W640FCB
Description  64 Mbit (4Mbx16, Boot Block) 3V Supply Flash memory
PDF  77 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M28W640FCB Datasheet(HTML) 42 Page - STMicroelectronics

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DC and AC parameters
M28W640FCT, M28W640FCB
42/77
Table 18.
Write AC characteristics, Chip enable controlled
Symbol
Alt
Parameter
M28W640FCT, M28W640FCB
Unit
70
85
90
10
tAVAV
tWC Write Cycle Time
Min
70
85
90
100
ns
tAVEH
tAS
Address Valid to Chip Enable
High
Min
454550
50
ns
tDVEH
tDS Data Valid to Chip Enable High
Min
45
45
50
50
ns
tEHAX
tAH
Chip Enable High to Address
Transition
Min
0000
ns
tEHDX
tDH
Chip Enable High to Data
Transition
Min
0000
ns
tEHEL
tCPH
Chip Enable High to Chip Enable
Low
Min
252530
30
ns
tEHGL
Chip Enable High to Output
Enable Low
Min
252530
30
ns
tEHWH
tWH
Chip Enable High to Write Enable
High
Min
0000
ns
tELEH
tCP
Chip Enable Low to Chip Enable
High
Min
454550
50
ns
tELQV
Chip Enable Low to Output Valid
Min
70
85
90
100
ns
tQVVPL
(1)(2)
1.
Sampled only, not 100% tested.
2.
Applicable if VPP is seen as a logic input (VPP < 3.6V).
Output Valid to VPP Low
Min
0000
ns
tQVWPL
Data Valid to Write Protect Low
Min
0000
ns
tVPHEH
(1)
tVPS VPP High to Chip Enable High
Min
200
200
200
200
ns
tWLEL
tCS
Write Enable Low to Chip Enable
Low
Min
0000
ns
tWPHEH
Write Protect High to Chip
Enable High
Min
454550
50
ns



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