Datasheet > HY57V28420ALT-6

HY57V28420ALT-6

更新时间： 2022-01-18 16:36:00

品牌	Logo	应用领域
其他 - ETC		动态存储器
页数	文件大小	规格书
13页	77K
描述
x4 SDRAM

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HY57V28420ALT-6 数据手册

HY57V28420A

4Banks x 8M x 4bits Synchronous DRAM

DESCRIPTION

The Hynix HY57V28420A is a 134,217,728bit CMOS Synchronous DRAM, ideally suited for the main memory applica-

tions which require large memory density and high bandwidth. HY57V28420A is organized as 4banks of 8,388,608x4.

HY57V28420A is offering fully synchronous operation referenced to a positive edge of the clock. All inputs and outputs

are synchronized with the rising edge of the clock input. The data paths are internally pipelined to achieve very high

bandwidth. All input and output voltage levels are compatible with LVTTL.

Programmable options include the length of pipeline (Read latency of 2 or 3), the number of consecutive read or write

cycles initiated by a single control command (Burst length of 1,2,4,8 or full page), and the burst count

sequence(sequential or interleave). A burst of read or write cycles in progress can be terminated by a burst terminate

command or can be interrupted and replaced by a new burst read or write command on any cycle. (This pipelined

design is not restricted by a `2N` rule.)

FEATURES

•

Single 3.3±0.3V power supply

•

Auto refresh and self refresh

All device pins are compatible with LVTTL interface

4096 refresh cycles / 64ms

JEDEC standard 400mil 54pin TSOP-II with 0.8mm

of pin pitch

Programmable Burst Length and Burst Type

- 1, 2, 4, 8 or Full Page for Sequential Burst

- 1, 2, 4 or 8 for Interleave Burst

•

All inputs and outputs referenced to positive edge of

system clock

•

Data mask function by DQM

Internal four banks operation

•

Programmable CAS Latency ; 2, 3 Clocks

ORDERING INFORMATION

Part No.

Clock Frequency

Power

Organization

Interface

Package

HY57V28420AT-6

HY57V28420AT-K

HY57V28420AT-H

HY57V28420AT-8

HY57V28420AT-P

HY57V28420AT-S

HY57V28420ALT-6

HY57V28420ALT-K

HY57V28420ALT-H

HY57V28420ALT-8

HY57V28420ALT-P

HY57V28420ALT-S

166MHz

133MHz

125MHz

100MHz

166MHz

133MHz

125MHz

100MHz

Normal

4Banks x 8Mbits

x 4

LVTTL

400mil 54pin TSOP II

Low power

This document is a general product description and is subject to change without notice. Hynix does not assume any responsibility for

use of circuits described. No patent licenses are implied.

Rev. 1.3/Aug. 01

12 3 4 5 6 7...13

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