STK10C68
MODE SELECTION
E
H
L
L
L
L
W
X
H
L
G
X
L
NE
X
MODE
POWER
Standby
Active
Not Selected
H
H
L
Read SRAM
X
L
Write SRAM
Active
l
H
L
Nonvolatile RECALL
Nonvolatile STORE
Active
H
L
I
CC
2
L
L
L
H
L
H
L
X
No Operation
Active
Note l: An automatic RECALL takes place at power up, starting when VCC exceeds 4.25V and taking tRESTORE
.
STORE CYCLES #1 & #2
(V = 5.0V 10%)
CC
SYMBOLS
NO.
PARAMETER
MIN
MAX
UNITS
#1
#2
Alt.
m
n
26
27
28
29
30
31
32
t
t
t
t
t
t
STORE Cycle Time
10
ms
ns
ns
ns
ns
ns
ns
WLQX
WLNH
ELQX
ELNH
STORE
WC
STORE Initiation Cycle Time
Output Disable Set-up to NE Fall
Output Disable Set-up to E Fall
NE Set-up
20
0
tGHNL
t
t
0
GHEL
t
t
0
NLWL
NLEL
Chip Enable Set-up
0
ELWL
t
Write Enable Set-up
0
WLEL
Note m: Measured with W and NE both returned high, and G returned low. STORE cycles are inhibited below 4.0V.
Note n: Once tWC 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.
o
STORE CYCLE #1: W Controlled
NE
28
GHNL
30
NLWL
27
WLNH
G
t
t
t
W
31
ELWL
t
E
26
WLQX
t
HIGH IMPEDANCE
DQ (DATA OUT)
o
STORE CYCLE #2: E Controlled
30
t
NLEL
NE
29
GHEL
t
G
32
WLEL
t
W
E
27
ELNH
t
26
ELQX
t
HIGH IMPEDANCE
DQ (DATA OUT)
March 2006
6
Document Control # ML0006 rev 0.2
SIMTEK [ SIMTEK CORPORATION ]
