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Part Name
Description
XM28C040-20 View Datasheet(PDF) - Xicor -> Intersil
Part Name
Description
Manufacturer
XM28C040-20
5 Volt, Byte Alterable E2PROM
Xicor -> Intersil
XM28C040-20 Datasheet PDF : 17 Pages
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XM28C040
Write Cycle Limits
Symbol
t
WC
t
AS
t
AH
t
CS
t
CH
t
CW
t
OES
t
OEH
t
WP
t
WPH
t
DV
t
DS
t
DH
t
DW
t
BLC
Parameter
Write Cycle Time
Address Setup Time
Address Hold Time
Write Setup Time
Write Hold Time
CE
Pulse Width
OE
High Setup Time
OE
High Hold Time
WE
Pulse Width
WE
High Recovery
Data Valid
Data Setup
Data Hold
Delay to Next Write
Byte Load Cycle
WE
Controlled Write Cycle
ADDRESS
CE
tAS
tCS
WE
Controlled Write
Min.
Max.
10
0
125
25
0
125
10
10
100
100
1
50
10
10
0.3
100
CE
Controlled Write
(4)
Min.
Max.
10
0
125
0
25
100
10
35
125
100
1
50
35
10
0.3
100
tWC
tAH
tCH
Units
ms
ns
ns
ns
ns
ns
ns
ns
ns
ns
µ
s
ns
ns
µ
s
µ
s
3873 PGM T08.1
OE
WE
DATA IN
DATA OUT
tOES
tDV
tOEH
tWP
tWPH
DATA VALID
tDS
tDH
HIGH Z
3873 FHD F04
Note:
(4) Due to the inclusion of the decoder IC on board the module the
WE
and
CE
write controlled timings will vary. When utilizing the
CE
controlled write operation all the hold timings must be extended by the worst case propagation delay of the decoder. For a
WE
controlled write operation
CE
must be a minimum 125ns to accommodate the additional setup time required.
12
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