M28W640 STMicroelectronics, M28W640 Datasheet - Page 28

• Manufacturer Part Number: M28W640
• Description: 64 Mbit 4Mb x16/ Boot Block 3V Supply Flash Memory
• Manufacturer: STMicroelectronics

M28W640CT, M28W640CB
Table 17. Write AC Characteristics, Chip Enable Controlled
Note: 1. Sampled only, not 100% tested.
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t
QVVPL
t
VPHEH
Symbol
t
t
t
WPHEH
QVWPL
t
t
t
t
t
t
t
t
t
t
EHWH
DVEH
EHDX
AVEH
EHAX
EHEL
EHGL
ELEH
ELQV
WLEL
AVAV
2. Applicable if V
(1,2)
(1)
t
t
t
t
t
t
t
CPH
t
t
Alt
t
VPS
WC
WH
DH
AS
DS
AH
CP
CS
PP
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
is seen as a logic input (V
PP
High to Chip Enable High
PP
Parameter
Low
PP
< 3.6V).
Min
Min
Min
Min
Min
Min
Min
Min
Min
Min
Min
Min
Min
Min
Min
200
80
80
45
45
25
25
45
80
45
0
0
0
0
0
0
M28W640C
200
90
90
50
50
30
30
50
90
50
0
0
0
0
0
0
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns