m28w640fcb STMicroelectronics, m28w640fcb Datasheet - Page 42

• Manufacturer Part Number: m28w640fcb
• Description: 64 Mbit 4mb X16, Boot Block 3v Supply Flash Memory
• Manufacturer: STMicroelectronics

DC and AC parameters
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Table 18.
1. Sampled only, not 100% tested.
2. Applicable if V
t
VPHEH
Symbol
t
t
t
t
WPHEH
QVWPL
t
t
t
t
t
t
t
t
t
QVVPL
t
EHWH
DVEH
EHAX
EHDX
EHGL
ELQV
(1)(2)
WLEL
AVEH
EHEL
ELEH
AVAV
(1)
t
t
t
t
t
t
t
CPH
t
t
Alt
t
VPS
Write AC characteristics, Chip enable controlled
WC
WH
AS
DS
AH
DH
CP
CS
PP
is seen as a logic input (V
Write Cycle Time
Address Valid to Chip Enable
High
Data Valid to Chip Enable High
Chip Enable High to Address
Transition
Chip Enable High to Data
Transition
Chip Enable High to Chip Enable
Low
Chip Enable High to Output
Enable Low
Chip Enable High to Write Enable
High
Chip Enable Low to Chip Enable
High
Chip Enable Low to Output Valid
Output Valid to V
Data Valid to Write Protect Low
V
Write Enable Low to Chip Enable
Low
Write Protect High to Chip
Enable High
PP
High to Chip Enable High
Parameter
PP
Low
PP
< 3.6V).
Min
Min
Min
Min
Min
Min
Min
Min
Min
Min
Min
Min
Min
Min
Min
M28W640FCT, M28W640FCB
200
70
70
45
45
25
25
45
70
45
0
0
0
0
0
0
M28W640FCT, M28W640FCB
200
85
85
45
45
25
25
45
85
45
0
0
0
0
0
0
200
90
90
50
50
30
30
50
90
50
0
0
0
0
0
0
100
100
200
10
50
50
30
30
50
50
0
0
0
0
0
0
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns