STK10C68
MODE SELECTION
E
H
L
L
L
L
L
L
W
X
H
L
H
L
L
H
G
X
L
X
L
H
L
H
NE
X
H
H
L
L
L
X
MODE
Not Selected
Read SRAM
Write SRAM
Nonvolatile
RECALL
l
Nonvolatile
STORE
No Operation
POWER
Standby
Active
Active
Active
I
CC2
Active
Note l:
An automatic
RECALL
takes place at power up, starting when V
CC
exceeds 4.25V and taking t
RESTORE
.
STORE
CYCLES #1 & #2
SYMBOLS
NO.
#1
26
27
28
29
30
31
32
t
NLWL
t
ELWL
t
WLEL
t
WLQXm
t
WLNHn
#2
t
ELQX
t
ELNH
Alt.
t
STORE
t
WC
STORE
Cycle Time
STORE
Initiation Cycle Time
Output Disable Set-up to NE Fall
t
GHEL
t
NLEL
Output Disable Set-up to E Fall
NE Set-up
Chip Enable Set-up
Write Enable Set-up
PARAMETER
(V
CC
= 5.0V
±
10%)
MIN
MAX
10
20
0
0
0
0
0
UNITS
ms
ns
ns
ns
ns
ns
ns
t
GHNL
Note m: Measured with W and NE both returned high, and G returned low.
STORE
cycles are inhibited below 4.0V.
Note n: Once t
WC
has been satisfied by NE, G, W and E, the
STORE
cycle is completed automatically. Any of NE, G, W or E may be used to terminate
the
STORE
initiation cycle.
Note o: If E is low for any period of time in which W is high while G and NE are low, then a
RECALL
cycle may be initiated.
STORE
CYCLE #1:
W Controlled
o
NE
G
W
28
t
GHNL
30
t
NLWL
27
t
WLNH
E
31
t
ELWL
HIGH IMPEDANCE
26
t
WLQX
DQ (DATA OUT)
STORE
CYCLE #2:
E Controlled
o
NE
30
t
NLEL
29
t
GHEL
G
W
E
32
t
WLEL
27
t
ELNH
HIGH IMPEDANCE
26
t
ELQX
DQ (DATA OUT)
March 2006
6
Document Control # ML0006 rev 0.2
SIMTEK [ SIMTEK CORPORATION ]
