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HM63921: 产品描述2048-word x 9-bit CMOS Parallel In-Out FIFO Memory; 文件大小96KB，共2页; 制造商ETC

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HM63921概述

2048-word x 9-bit CMOS Parallel In-Out FIFO Memory

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HM63921 Series

2048-word

9-bit CMOS Parallel In-Out FIFO Memory

The HM63921 is a first-in, first-out memory that

utilizes a high performance static RAM array with

internal algorithm that controls, monitors and

declares status of the memory by empty flag, full

flag and half-full flag, to prevent data overflow or

underflow.

Expansion logic warrants unlimited expansion

capability in width and depth. Both read and write

are independent from each other and their

corresponding pointers are designed to select the

proper locations out of the entire array serially

without address information to load or unload data.

Data is toggled in and out of the device through the

use of the write enable (

) and read enable (

)

pins. The device has a read/write cycle time of

30/35/45 ns. Organization of HM63921 provides a

9-bit data bus. The ninth bit could be used for

control or parity for error checking at the option of

the user. The HM63921 is fabricated using the

Hitachi CMOS 1.3 micron technology. The device

is available in DIP and SOJ.

Pin Arrangement

FL/RT

XO/HF

(Top view)

Features

•

First-in, first-out dual port memory

2 k

9 organization

Low-power CMOS 1.3 micron technology

Asynchronous and simultaneous read and write

Fully expandable in depth and/or width

Single 5 V power supply

Empty and full warning flags

Half-full flag

Access time: 22/25/35 ns

Package: 300-mil 28-pin plastic DIP package

300-mil 28-pin plastic SOJ package

Ordering Information

Type name

HM63921P-20R

Access time

22 ns

Package

–––––––––––––––––––––––––––––––––––––––––

300-mil 28-pin

––––––––––––––––––––––––––––

plastic DIP

HM63921P-25

25 ns

(DP-28NA)

––––––––––––––––––––––––––––

HM63921P-35

35 ns

–––––––––––––––––––––––––––––––––––––––––

300-mil 28-pin

––––––––––––––––––––––––––––

plastic SOJ

HM63921JP-25

25 ns

(CP-28DN)

HM63921JP-20R 22 ns

––––––––––––––––––––––––––––

HM63921JP-35

35 ns

–––––––––––––––––––––––––––––––––––––––––

HM63921相似产品对比

	HM63921	HM63921JP-20R	HM63921JP-25	HM63921JP-35	HM63921P-20R	HM63921P-25	HM63921P-35
描述	2048-word x 9-bit CMOS Parallel In-Out FIFO Memory	2048-word x 9-bit CMOS Parallel In-Out FIFO Memory	2048-word x 9-bit CMOS Parallel In-Out FIFO Memory	2048-word x 9-bit CMOS Parallel In-Out FIFO Memory	2048-word x 9-bit CMOS Parallel In-Out FIFO Memory	2048-word x 9-bit CMOS Parallel In-Out FIFO Memory	2048-word x 9-bit CMOS Parallel In-Out FIFO Memory

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