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IDT71V509S50Y Datasheet

  • IDT71V509S50Y

  • 128K x 8 3.3V SYNCHRONOUS SRAM WITH ZBTO AND FLOW-THROUGH OU...

  • 98.72KB

  • 9頁

  • IDT

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128K x 8 3.3V SYNCHRONOUS SRAM
WITH ZBT鈩?AND FLOW-THROUGH
OUTPUT
Integrated Device Technology, Inc.
ADVANCE
INFORMATION
IDT71V509
FEATURES:
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
128K x 8 memory configuration
High speed - 66 MHz (9 ns Clock-to-Data Access)
Flow-Through Output
No dead cycles between Write and Read Cycles
Low power deselect mode
Single 3.3V power supply (鹵5%)
Packaged in 44-lead SOJ
DESCRIPTION:
The IDT71V509 is a 3.3V high-speed 1,024,576-bit syn-
chronous SRAM organized as 128K x 8. It is designed to
eliminate dead cycles when turning the bus around between
reads and writes, or writes and reads. Thus, it has been given
the name ZBT鈩?, or Zero Bus Turnaround鈩?.
Addresses and control signals are applied to the SRAM
during one clock cycle, and one clock cycle later its associated
data cycle occurs, be it read or write.
The IDT71V509 contains data, address, and control signal
registers. Output Enable is the only asynchronous signal, and
can be used to disable the output at any time.
A Clock Enable (
CEN
) pin allows operation of the IDT71V509
to be suspended as long as necessary. All synchronous
inputs are ignored when
CEN
is high. A Chip Select (
CS
) pin
allows the user to deselect the device when desired. If
CS
is
high, no new memory operation is initiated, but any pending
data transfers (reads and writes) will still be completed.
The IDT71V509 utilizes IDT's high-performance 3.3V CMOS
process, and is packaged in a JEDEC Standard 400-mil 44-
lead small outline J-lead plastic package (SOJ) for high board
density.
FUNCTIONAL BLOCK DIAGRAM
Address
D
Q
Address
SRAM
Control
(
WE
,
CS
,
CEN
)
D
Input Register
Q
Control
DI
DO
D
Q
Control Logic
Clk
Mux
Sel
Clock
OE
Gate
Data
3618 drw 01
The IDT logo is a registered trademark and CacheRAM, Zero Bus Turnaround and ZBTare trademarks of Integrated Device Technology, Inc.
Pentium is a trademark of Intel Corp.
PowerPC is a trademark of International Business Machines, Inc.
COMMERCIAL TEMPERATURE RANGE
漏1996
Integrated Device Technology, Inc.
AUGUST 1996
11.3
DSC-3618/1
1

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