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IS61C512-25JI Datasheet(PDF) 6 Page - Integrated Circuit Solution Inc

Part # IS61C512-25JI
Description  64K x 8 HIGH-SPEED CMOS STATIC RAM
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Manufacturer  ICSI [Integrated Circuit Solution Inc]
Direct Link  http://www.icsi.com.tw
Logo ICSI - Integrated Circuit Solution Inc

IS61C512-25JI Datasheet(HTML) 6 Page - Integrated Circuit Solution Inc

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IS61C512
6
Integrated Circuit Solution Inc.
SR011-0B
WRITE CYCLE SWITCHING CHARACTERISTICS(1,3)
(Over Operating Range)
-15 ns
-20 ns
-25 ns
-35 ns
Symbol Parameter
Min.
Max.
Min.
Max.
Min.
Max.
Min.
Max.
Unit
tWC
Write Cycle Time
15
20
25
35
ns
tSCE1
CE1 to Write End
12
15
20
30
ns
tSCE2
CE2 to Write End
12
15
20
30
ns
tAW
Address Setup Time to Write End
12
15
20
30
ns
tHA
Address Hold from Write End
0
0
0
0
ns
tSA
Address Setup Time
0
0
0
0
ns
tPWE
(4)
WE Pulse Width
10
12
15
20
ns
tSD
Data Setup to Write End
8
10
12
15
ns
tHD
Data Hold from Write End
0
0
0
0
ns
tHZWE
(2)
WE LOW to High-Z Output
7
10
12
8
ns
tLZWE
(2)
WE HIGH to Low-Z Output
2
2
2
2
ns
Notes:
1.
Test conditions assume signal transition times of 5 ns or less, timing reference levels of 1.5V, input pulse levels of 0 to 3.0V
and output loading specified in Figure 1a.
2.
Tested with the load in Figure 1b.
Transition is measured ±500 mV from steady-state voltage. Not 100% tested.
3.
The internal write time is defined by the overlap of
CE1 LOW, CE2 HIGH and WE LOW. All signals must be in valid states to
initiate a Write, but any one can go inactive to terminate the Write.
The Data Input Setup and Hold timing are referenced to the
rising or falling edge of the signal that terminates the write.
4.
Tested with
OE HIGH.
AC WAVEFORMS
WRITE CYCLE NO. 1 (WE
WE
WE
WE
WE Controlled)(1,2)
DATA-IN VALID
DATA UNDEFINED
tWC
tSCE1
tSCE2
tAW
tHA
tPWE
tHZWE
HIGH-Z
tLZWE
tSA
tSD
tHD
ADDRESS
CE1
CE2
WE
DOUT
DIN


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