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IDT71V2577S75BQI Datasheet(PDF) 11 Page - Integrated Device Technology

Part # IDT71V2577S75BQI
Description  128K x 36, 256K x 18 3.3V Synchronous SRAMs 2.5V I/O, Flow-Through Outputs Burst Counter, Single Cycle Deselect
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Manufacturer  IDT [Integrated Device Technology]
Direct Link  http://www.idt.com
Logo IDT - Integrated Device Technology

IDT71V2577S75BQI Datasheet(HTML) 11 Page - Integrated Device Technology

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6.42
IDT71V2577, IDT71V2579, 128K x 36, 256K x 18, 3.3V Synchronous SRAMs with
2.5V I/O, Flow-Through Outputs, Burst Counter, Single Cycle Deselect
Commercial and Industrial Temperature Ranges
11
Linear Burst Sequence Table (LBO=VSS)
Synchronous Write Function Truth Table(1, 2)
Asynchronous Truth Table(1)
Interleaved Burst Sequence Table (LBO=VDD)
NOTES:
1. L = VIL, H = VIH, X = Don’t Care.
2.
BW3 and BW4 are not applicable for the IDT71V2579.
3. Multiple bytes may be selected during the same cycle.
NOTES:
1. L = VIL, H = VIH, X = Don’t Care.
2. Synchronous function pins must be biased appropriately to satisfy operation requirements.
NOTE:
1. Upon completion of the Burst sequence the counter wraps around to its initial state.
NOTE:
1. Upon completion of the Burst sequence the counter wraps around to its initial state.
Operation
GW
BWE
BW1
BW2
BW3
BW4
Read
H
H
XXXX
Read
H
L
HHHH
Write all Bytes
L
XXXXX
Write all Bytes
H
LLLLL
Write Byte 1
(3)
H
L
L
HHH
Write Byte 2
(3)
HL
HL
H
H
Write Byte 3(3)
HL
H
H
L
H
Write Byte 4
(3)
H
L
HHH
L
4877 tbl 12
Operation
(2)
OE
ZZ
I/O Status
Power
Read
L
L
Data Out
Active
Read
H
L
High-Z
Active
Write
X
L
High-Z – Data In
Active
Deselected
X
L
High-Z
Standby
Sleep Mode
X
H
High-Z
Sleep
4877 tbl 13
Sequence 1
Sequence 2
Sequence 3
Sequence 4
A1
A0
A1
A0
A1
A0
A1
A0
First Address
0
0
0
1
1
0
1
1
Second Address
0
1
0
0
1
1
1
0
Third Address
1
0
1
1
0
0
0
1
Fourth Address
(1)
11
1
0
0
1
0
0
4877 tbl 14
Sequence 1
Sequence 2
Sequence 3
Sequence 4
A1
A0
A1
A0
A1
A0
A1
A0
First Address
0
0
0
1
1
0
1
1
Second Address
0
1
1
0
1
1
0
0
Third Address
1
0
1
1
0
0
0
1
Fourth Address
(1)
1
1
000
1
1
0
4877 tbl 15


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