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AS5C4009 Datasheet(PDF) 7 Page - Austin Semiconductor

Part No. AS5C4009
Description  512K x 8 SRAM Ultra Low Power SRAM
Download  12 Pages
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Maker  AUSTIN [Austin Semiconductor]
Homepage  http://www.austinsemiconductor.com
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AS5C4009 Datasheet(HTML) 7 Page - Austin Semiconductor

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SRAM
SRAM
SRAM
SRAM
SRAM
AS5C4009
AS5C4009
Rev. 5.1 6/05
Austin Semiconductor, Inc. reserves the right to change products or specifications without notice.
7
Austin Semiconductor, Inc.
WRITE CYCLE NO. 1
(WE Controlled)
WRITE CYCLE NO. 2
(Write Enabled Controlled)
NOTES:
1. tHZ and tOHZ are defined as the time at which the outputs achieve the open circuit conditions and are not referenced to output voltage levels.
2. At any given temperature adn voltage condition, tHZ (MAX) is less than tLZ (MIN) both for a given device and from device to
device interconnection.
3. A write occurs during the overlap of a low CE\ adn a low WE\. A write begins at the latest transistion among CE\ going Low and
WE\ going Low: A write end at the earliest transistion among CE\ going High and WE\ going High, tWP is measured from the
beginning of write to the end of write.
4. tCW is measured from the CE\ going Low to end of write.
5. tAS is measured from the address valid to the beginning of write.
6. tWR is measure from the end of write to the address change. tWR applied in case a write ends are CE\ or WE\ going High.
ADDRESS
t
WC
t
CW(4)
CE\
123456789
123456789
123456789
123456789
123456789
123456789012345678901
123456789012345678901
123456789012345678901
123456789012345678901
123456789012345678901
1234567890123456789012
1234567890123456789012
1234567890123456789012
1234567890123456789012
123456
123456
123456
123456
123456
1234567890123456
1234567890123456
1234567890123456
1234567890123456
1234567890123456
12345678901234567
12345678901234567
12345678901234567
12345678901234567
t
AW
Data Valid
t
WR(6)
t
AS(5)
DATA OUT
1234567
1234567
1234567
1234567
1234567
Data Undefined
t
WP(3)
t
DW
t
DH
t
WHZ
t
OW
WE\
DATA IN
123456789
123456789
123456789
123456789
1234567890123456789012345
1234567890123456789012345
1234567890123456789012345
1234567890123456789012345
12345678901234567890123456
12345678901234567890123456
12345678901234567890123456
12345678901234567890123456
1234567
1234567
1234567
1234567
123456789012345678
123456789012345678
123456789012345678
123456789012345678
123456789012345678
123456789012345678
123456789012345678
123456789012345678
ADDRESS
t
WC
t
CW(4)
CE\
t
AW
Data Valid
t
WR(6)
t
AS(5)
DATA OUT
t
WP(3)
t
DW
t
DH
WE\
DATA IN
High-Z
High-Z


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