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SRAM
AS5SS128K36
Austin Semiconductor, Inc.
AS5SS128K36
Rev. 2.0 12/00
Austin Semiconductor, Inc. reserves the right to change products or specifications without notice.
14
NOP, STALL AND DESELECT CYCLES
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A1
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12345678901234567890123
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1234567890123456
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1234567890123456789012
1234567890123456789012
1234567890123456789012
A2
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A3
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A4
112345678901234
112345678901234
112345678901234
A5
112345678901234
112345678901234
112345678901234
t
KHQZ
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D(A1)
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Q(A2)
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Q(A3)
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Q(A5)
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WRITE
D(A1)
READ
Q(A2)
STALL
READ
Q(A3)
WRITE
D(A4)
STALL
NOP
READ
Q(A5)
DESELECT CONTINUE
DESELECT
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Don’t Care
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Undefined
CLK
CE\
ADV/LD\
R/W\
BWx\
ADDRESS
DQ
COMMAND
1
2 3 4 5 6 7 8 9 10
t
KHQX
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CKE\
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12345678
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12345678
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12345678
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1234567890
1234567890
1234567890
123456789
123456789
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123456789
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D(A4)
NOP, STALL AND DESELECT TIMING PARAMETERS
-11
MIN
3.0
MAX
MIN
3.0
MAX
t
KHQX
t
KHQZ
5.0
5.0
SYMBOL
-12
NOTE:
1.
The IGNORE CLOCK EDGE or STALL cycle (clock 3) illustrates CKE\ being used to create a “pause”. A WRITE is not performed
during this cycle.
For this waveform, ZZ and OE\ are tied LOW.
CE\ represents three signals. When CE\ = 0, it represents CE\ = 0, CE2\ = 0, CE2 = 1.
Data coherency is provided for all possible operations. If a READ is initiated, the most current data is used. The most recent data
may be from the input data register.
2.
3.
4.