m28256 STMicroelectronics, m28256 Datasheet - Page 10

• Manufacturer Part Number: m28256
• Description: 256 Kbit 32kb X8 Parallel Eeprom With Software Data Protection
• Manufacturer: STMicroelectronics

M28256
Table 12. Write Mode AC Characteristics
(T
Note: 1. Characterized only but not tested in production.
10/21
A
Symbol
t
t
t
t
t
EL
= 0 to 70 C or –40 to 85 C; V
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
WHWH
WHEH
EHWH
WHDX
WHWL
WLWH
WHRH
DVWH
GHWL
WLAX
WLDV
WHGL
EHDX
DVEH
AVWL
ELWL
GHEL
WLEL
ELAX
ELDV
ELEH
EHGL
AVEL
, t
WL
t
t
t
t
t
t
t
t
t
t
t
Alt
WES
t
WEH
t
t
WPH
t
t
t
CES
OES
OES
t
t
t
t
CEH
OEH
OEH
BLC
t
t
WP
WP
WC
AS
AS
AH
AH
DV
DV
DH
DH
DS
DS
Address Valid to Write Enable Low
Address Valid to Chip Enable Low
Chip Enable Low to Write Enable Low
Output Enable High to Write Enable
Low
Output Enable High to Chip Enable Low
Write Enable Low to Chip Enable Low
Write Enable Low to Address Transition
Chip Enable Low to Address Transition
Write Enable Low to Input Valid
Chip Enable Low to Input Valid
Chip Enable Low to Chip Enable High
Write Enable High to Chip Enable High
Write Enable High to Output Enable
Low
Chip Enable High to Output Enable Low
Chip Enable High to Write Enable High
Write Enable High to Input Transition
Chip Enable High to Input Transition
Write Enable High to Write Enable Low
Write Enable Low to Write Enable High
Byte Load Repeat Cycle Time
Write Cycle Time
E or W Input Filter Pulse Width
Data Valid before Write Enable High
Data Valid before Chip Enable High
CC
= 4.5V to 5.5V)
Parameter
G = V
G = V
Test Condition
E = V
E = V
G = V
W = V
G = V
E = V
Note 1
IL
IH
IL
IH
, G = V
, G = V
, W = V
, W = V
IH
IL
IH
IL
IH
IH
IL
IL
0.15
Min
100
50
50
50
50
10
50
50
0
0
0
0
0
0
0
0
0
0
0
0
M28256
Max
150
1
1
5
Unit
ms
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
s
s
s