IDT7134 データシートの表示（PDF） - Integrated Device Technology
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IDT7134 Datasheet PDF : 9 Pages
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IDT7134SA/LA
HIGH-SPEED 4K x 8 DUAL-PORT STATIC RAM
MILITARY AND COMMERCIAL TEMPERATURE RANGES
FUNCTIONAL DESCRIPTION
The IDT7134 provides two ports with separate control,
address, and I/O pins that permit independent access for
reads or writes to any location in memory. These devices have
an automatic power down feature controlled by CE. The CE
controls on-chip power down circuitry that permits the
respective port to go into standby mode when not selected
(CE high). When a port is enabled, access to the entire
memory array is permitted. Each port has its own Output
Enable control (OE). In the read mode, the port’s OE turns on
the output drivers when set LOW. Non-contention READ/
WRITE conditions are illustrated in the table below.
TRUTH TABLE I – READ/WRITE CONTROL(2)
Left or Right Port(1)
R/W CE OE D0-7
Function
X
HX
X
HX
Z
Port Disabled and in Power
Down Mode, ISB2 or ISB4
Z
CER = CEL = H, Power Down
Mode, ISB1 or ISB3
L
L X DATAIN Data on port written into
memory
H
L L DATAOUT Data in memory output on port
X
XH
Z
High impedance outputs
2720 tbl 11
NOTES:
1. AOL - A11L ≠ AOR - A11R
2. "H" = HIGH, "L" = LOW, "X" = Don’t Care, and "Z" = High-impedance
ORDERING INFORMATION
IDT
XXXX
A
Device Type Power
999
Speed
A
Package
A
Process/
Temperature
Range
Blank
B
P
C
J
L48
F
Commercial (0°C to +70°C)
Military (–55°C to +125°C)
Compliant to MIL-STD-883, Class B
48-pin Plastic DIP (P48-1)
48-pin Ceramic DIP (C48-2)
52-pin PLCC (J52-1)
48-pin LCC (L48-1)
48-pin Ceramic Flatpack (F48-1)
20
25
35
45
55
70
LA
SA
7134
Commercial Only
Speed in nanoseconds
Low Power
Standard Power
32K (4K x 8-Bit) Dual-Port RAM
2720 drw 13
6.04
9
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