X20C05
Software Command Timing Limits
X20C05-35
X20C05-45
X20C05-55
Symbol
Parameter
Store Cycle Time
Min.
Max.
Min.
Max.
Min.
Max. Units
t
t
t
t
t
t
t
t
t
t
t
5
5
5
ms
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
STO
(6)
Store Pulse Width
30
35
35
0
40
45
45
0
50
55
55
0
SP
Store Pulse Hold Time
Write Cycle Time
SPH
WC
AS
Address Setup Time
Address Hold time
0
0
0
AH
Data Setup Time
15
0
20
3
25
3
DS
Data Hold Time
DH
(7)
OE Disable to Store Function
Output Enable from End of Store
20
10
20
10
20
10
SOE
(7)
OEST
(7)
Nonvolatile Enable to Output in
High Z
15
20
25
NHZ
t
t
NE Setup Time
NE Hold Time
5
5
5
5
5
5
ns
NES
ns
NEH
3827 PGM T12.1
CE Controlled Software Command Sequence
t
t
WC
STO
ADDRESS
OE
155
155
0AA
t
t
t
t
OEST
AS
SP
SPH
CE
t
AH
WE
t
t
NEH
NES
NE
t
t
SOE
NHZ
DATA OUT
DATA IN
t
t
DH
DS
AA
55
CMD
3827 FHD F08.2
Notes: (6) The Store Pulse Width (t ) is a minimum time that NE, WE and CE must be LOW simultaneously.
SP
(7) t
, t
and t
are periodically sampled and not 100% tested.
SOE OEST
NHZ
10
XICOR [ XICOR INC. ]
