STK11C68-M
NONVOLATILE MEMORY OPERATION
MODE SELECTION
E
W
A
- A (hex)
0
MODE
I/O
POWER
NOTES
12
H
L
L
L
X
H
L
X
Not Selected
Read SRAM
Output High Z
Output Data
Input Data
Standby
Active
Active
Active
X
o
X
Write SRAM
H
0000
1555
0AAA
1FFF
10F0
0F0F
0000
1555
0AAA
1FFF
10F0
0F0E
Read SRAM
Output Data
Output Data
Output Data
Output Data
Output Data
Output High Z
Output Data
Output Data
Output Data
Output Data
Output Data
Output High Z
n,o
n,o
n,o
n,o
n,o
n
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Nonvolatile STORE
Read SRAM
I
CC
2
L
H
Active
n,o
n,o
n,o
n,o
n,o
n
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Nonvolatile RECALL
Note n: The six consecutive addresses must be in order listed - (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. See STORE cycle and RECALL cycle tables and diagrams for further details.
Note o: I/O state assumes that G ≤ V . Initiation and operation of nonvolatile cycles does not depend on the state of G.
IL
STORE CYCLE INHIBIT and AUTOMATIC POWER-UP RECALL
V
CC
5.0V
4.0
t
STORE inhibit
Automatic RECALL
4-36
SIMTEK [ SIMTEK CORPORATION ]
