STK15C68 Просмотр технического описания (PDF) - Unspecified
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STK15C68 Datasheet PDF : 9 Pages
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STK15C68
SOFTWARE 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
NonvolatileRECALL
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
l
Output High Z
Output High Z
Note l: The six consecutive addresses must be in order listed. W must be high during all six consecutive cycles to enable a nonvolatile cycle.
SOFTWARE CYCLES #1 & #2m,n
(VCC = 5.0V ± 10%)
SYMBOLS
NO.
#1
PARAMETER
STK15C68-25
MIN
MAX
STK15C68-35
MIN
MAX
STK15C68-45
MIN
MAX
UNITS
27
tAVAV
28
tELQZg,m
29
tAVELm
30
tELEHm
31
tELAXg,m
32
tRECALL
STORE/RECALL Initiation Cycle Time
End of Sequence to Outputs Inactive
Address Set-up Time
Clock Pulse Width
Address Hold Time
Recall Cycle Duration
25
35
45
ns
650
650
650
ns
0
0
0
ns
20
25
30
ns
20
20
20
ns
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 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 CYCLE: E CONTROLLED
ADDRESS
t
29
AVEL
t
27
AVAV
ADDRESS #1
t
30
ELEH
E
31
t ELAX
DQ(Data Out)
DATA VALID
t
27
AVAV
ADDRESS #6
t
23
STORE
t
32
RECALL
t
28
ELQZ
DATA VALID
HIGH IMPEDANCE
4-66
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