STK15C68 Ver la hoja de datos (PDF) - Simtek Corporation
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STK15C68 Datasheet PDF : 10 Pages
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STK15C68
SOFTWARE STORE/RECALL MODE SELECTION
E
W
G
L
H
X
A12 - A0 (hex)
0000
1555
0AAA
1FFF
10F0
0F0F
MODE
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Nonvolatile STORE
I/O with G Low
Output Data
Output Data
Output Data
Output Data
Output Data
Output High Z
I/O with G High
Output High Z
Output High Z
Output High Z
Output High Z
Output High Z
Output High Z
NOTES
l
L
H
X
0000
1555
0AAA
1FFF
10F0
0F0E
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Nonvolatile RECALL
Output Data
Output Data
Output Data
Output Data
Output Data
Output High Z
Output High Z
Output High Z
Output High Z
l
Output High Z
Output High Z
Output High Z
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.
SOFTWARE STORE/RECALL CYCLEm, n
(VCC = 5.0V ± 10%)
NO. SYMBOLS
PARAMETER
STK15C68-25
MIN
MAX
STK15C68-35
MIN
MAX
STK15C68-45
MIN
MAX
UNITS
27
tAVAV
28
tAVELm
29
tELEHm
30
tELAXg, m
STORE/RECALL Initiation Cycle Time
Address Set-Up Time
Clock Pulse Width
Address Hold Time
25
35
45
ns
0
0
0
ns
20
25
30
ns
20
20
20
ns
31
tRECALL
RECALL Cycle Duration
20
20
20
μs
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.
SOFTWARE STORE/RECALL CYCLE: E Controlledn
ADDRESS
27
tAVAV
ADDRESS #1
27
tAVAV
ADDRESS #6
28
tAVEL
29
tELEH
E
DQ (DATA OUT)
30
tELAX
DATA VALID
/ 23
31
tSTORE tRECALL
DATA VALID
HIGH IMPEDANCE
March 2006
6 Document Control # ML0009 rev 0.2
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