STK15C88
SOFTWARE
STORE/RECALL
MODE SELECTION
E
W
A
13
- A
0
(hex)
0E38
31C7
03E0
3C1F
303F
0FC0
0E38
31C7
03E0
3C1F
303F
0C63
MODE
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Nonvolatile
STORE
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Nonvolatile
RECALL
I/O
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
NOTES
L
H
l, m
L
H
l, m
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.
Note m: While there are 15 addresses on the STK15C88, only the lower 14 are used to control software modes.
SOFTWARE
STORE/RECALL
CYCLE
NO.
26
27
28
29
30
SYMBOLS
t
AVAV
t
AVEL
n
t
ELEH
n
t
ELAX
g, n
t
RECALL
PARAMETER
MIN
STORE/RECALL
Initiation Cycle Time
Address Set-up Time
Clock Pulse Width
Address Hold Time
RECALL
Duration
25
0
20
20
(V
CC
= 5.0V
±
10%)
STK15C88-25
MAX
STK15C88-45
UNITS
MIN
45
0
30
20
20
20
MAX
ns
ns
ns
ns
μs
Note n: The software sequence is clocked with E controlled reads.
Note o: The six consecutive addresses must be in the order listed in the Software
STORE/RECALL
Mode Selection Table: (0E38, 31C7, 03E0, 3C1F,
303F, 0FC0) for a
STORE
cycle or (0E38, 31C7, 03E0, 3C1F, 303F, 0C63) for a
RECALL
cycle. W must be high during all six consecutive
cycles.
SOFTWARE
STORE/RECALL
CYCLE:
E Controlled
t
AVAV
ADDRESS
ADDRESS #1
26
t
AVAV
ADDRESS #6
26
t
AVEL
E
27
t
ELEH
28
t
ELAX
23
30
/
t
RECALL
29
t
STORE
DQ (DATA
DATA VALID
DATA VALID
HIGH IMPEDANCE
Document Control #ML0016 Rev 0.3
February, 2007
7
SIMTEK [ SIMTEK CORPORATION ]
