STK10C48
MODE SELECTION
E
H
L
L
L
L
W
X
H
L
G
X
L
NE
X
MODE
Not Selected
POWER
Standby
Active
H
H
L
Read SRAM
X
L
Write SRAM
Active
k
H
L
Nonvolatile RECALL
Nonvolatile STORE
Active
H
L
I
CC
2
L
L
L
H
L
H
L
X
No Operation
Active
Note k: 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.
l
22
23
24
25
26
27
28
t
t
t
t
t
t
STORE Cycle Time
10
ms
ns
ns
ns
ns
ns
ns
WLQX
ELQX
ELNH
STORE
WC
m
STORE Initiation Cycle Time
Output Disable Set-up to NE Fall
Output Disable Set-up to E Fall
NE Set-up
20
0
WLNH
tGHNL
t
t
0
GHEL
t
t
0
NLWL
NLEL
Chip Enable Set-up
0
ELWL
t
Write Enable Set-up
0
WLEL
Note l: Measured with W and NE both returned high, and G returned low. STORE cycles are inhibited below 4.0V.
Note m: 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 n: 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.
n
STORE CYCLE #1: W Controlled
NE
24
GHNL
26
NLWL
23
WLNH
G
t
t
t
W
27
ELWL
t
E
22
WLQX
t
HIGH IMPEDANCE
DQ (DATA OUT)
n
STORE CYCLE #2: E Controlled
26
t
NLEL
NE
25
GHEL
t
G
28
WLEL
t
W
E
23
ELNH
t
22
ELQX
t
HIGH IMPEDANCE
DQ (DATA OUT)
March 2006
5
Document Control # ML0002 rev 0.2
SIMTEK [ SIMTEK CORPORATION ]
