STK15C68
SOFTWARE STORE/RECALL MODE SELECTION
E
W
G
A
- A (hex)
MODE
I/O with G Low
I/O with G High
NOTES
12
0
0000
1555
0AAA
1FFF
10F0
0F0F
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Output Data
Output Data
Output Data
Output Data
Output Data
Output High Z
Output High Z
Output High Z
Output High Z
Output High Z
Output High Z
Output High Z
L
H
X
l
Nonvolatile STORE
0000
1555
0AAA
1FFF
10F0
0F0E
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Output Data
Output Data
Output Data
Output Data
Output Data
Output High Z
Output High Z
Output High Z
Output High Z
Output High Z
Output High Z
Output High Z
L
H
X
l
Nonvolatile RECALL
Note l: The six consecutive addresses must be in the order listed. W must be high during all six consecutive cycles to enable a nonvolatile cycle.
m, n
SOFTWARE STORE/RECALL CYCLE
(V = 5.0V 10%)
CC
STK15C68-25
STK15C68-35
STK15C68-45
UNITS
NO.
SYMBOLS
PARAMETER
MIN
25
0
MAX
MIN
35
0
MAX
MIN
45
0
MAX
27
28
29
30
31
t
t
t
t
t
STORE/RECALL Initiation Cycle Time
Address Set-Up Time
ns
ns
ns
ns
μs
AVAV
m
m
AVEL
Clock Pulse Width
20
20
25
20
30
20
ELEH
g, m
Address Hold Time
ELAX
RECALL Cycle Duration
20
20
20
RECALL
Note m: The software sequence is clocked with E controlled READs.
Note n: The six consecutive addresses must be in the order listed in the Software STORE/RECALL Mode Selection Table: (0000, 1555, 0AAA, 1FFF,
10F0, 0F0F) for a STORE cycle or (0000, 1555, 0AAA, 1FFF, 10F0, 0F0E) for a RECALL cycle. W must be high during all six consecutive
cycles.
n
SOFTWARE STORE/RECALL CYCLE: E Controlled
27
AVAV
27
t
AVAV
t
ADDRESS #1
ADDRESS #6
ADDRESS
28
AVEL
29
t
ELEH
t
E
30
ELAX
t
23
31
RECALL
t
STORE / t
HIGH IMPEDANCE
DATA VALID
DATA VALID
DQ (DATA OUT)
March 2006
6
Document Control # ML0009 rev 0.2
SIMTEK [ SIMTEK CORPORATION ]
