IDT70V5388S166BGI datasheet(2/29 Pages) IDT

Part #	IDT70V5388S166BGI

Description	3.3V 64/32K X 18 SYNCHRONOUS FOURPORT STATIC RAM

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Manufacturer	IDT [Integrated Device Technology]

Direct Link	http://www.idt.com

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IDT70V5388/78

3.3V 64/32K x 18 Synchronous FourPort™ Static RAM

Industrial and Commercial Temperature Ranges

Description

TheIDT70V5388/78isahigh-speed64/32Kx18bit

synchronous FourPort RAM. The memory array utilizes

FourPort memory cells to allow simultaneous access of

any address from all four ports. Registers on control, data,

and address inputs provide minimal setup and hold times.

The timing latitude provided by this approach allows sys-

tems to be designed with very short cycle times.

With an input data register and integrated burst

counters, the 70V5388/78 has been optimized for applica-

tions having unidirectional or bi-directional data flow in

bursts. An automatic power down feature, controlled byCE0

and CE1, permits the on-chip circuitry of each port to enter

a very low standby power mode.

TheIDT70V5388/78providesawiderangeoffunc-

tions specially designed to facilitate system operations.

These include full-boundary, maskable address counters

with associated interrupts for each port, mailbox interrupt

flags on each port to facilitate inter-port communications,

Memory Built-In Self-Test (MBIST), JTAG support and an

asynchronous Master Reset to simplify device initializa-

tion. In addition, the address lines have been set up as I/O

pins, to permit the support of CNTRD (the ability to output the

current value of the internal address counter on the address

lines) and MKRD (the ability to output the current value of the

counter mask register). For specific details on the device

operation, please refer to the Functional Description and

subsequent explanatory sections, beginning on page 21.

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