Datasheet > AS4C64M4SA-7TCN

AS4C64M4SA-7TCN

更新时间： 2022-02-26 13:09:37

品牌	Logo	应用领域
ALSC		动态存储器
页数	文件大小	规格书
55页	1278K
描述
64M x 4 bit Synchronous DRAM (SDRAM)

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AS4C64M4SA-7TCN 数据手册

AS4C64M4SA-7TCN

AS4C64M4SA-6TIN

64M x 4 bit Synchronous DRAM (SDRAM)

Advance (Rev. 1.0, Jun. /2017)

Overview

Features

The AS4C64M4SA SDRAM is

high-speed

Fast access time from clock: 5/5.4 ns

Fast clock rate: 166/143 MHz

Fully synchronous operation

Internal pipelined architecture

16M word x 4-bit x 4-bank

Programmable Mode registers

- CAS Latency: 2 or 3

- Burst Length: 1, 2, 4, 8, or full page

- Burst Type: Sequential or Interleaved

- Burst stop function



CMOS synchronous DRAM containing 256 Mbits. It

is internally configured as 4 Banks of 16M word x 4

DRAM with a synchronous interface (all signals are

registered on the positive edge of the clock signal,

CLK). Read and write accesses to the SDRAM are

burst oriented; accesses start at a selected location

and continue for a programmed number of locations

in a programmed sequence. Accesses begin with

the registration of a Bank Activate command which is

then followed by a Read or Write command.

Auto Refresh and Self Refresh

8192 refresh cycles/64ms

CKE power down mode

Single +3.3V ±0.3V power supply

Operating Temperature:



The AS4C64M4SA provides for programmable

Read or Write burst lengths of 1, 2, 4, 8, or full page,

with a burst termination option. An auto precharge

function may be enabled to provide a self-timed row

precharge that is initiated at the end of the burst

sequence. The refresh functions, either Auto or Self

Refresh are easy to use. By having a programmable

mode register, the system can choose the most

suitable modes to maximize its performance. These

devices are well suited for applications requiring high

memory bandwidth and particularly well suited to

Commercial: T_A= 0~70°C

Industrial: T_A= -40~85°C

Interface: LVTTL

54-pin 400 mil plastic TSOP II package

- Pb free and Halogen free



high performance PC applications.

Tableꢀ1.ꢀOrderingꢀInformationꢀ

Part Number

Orgꢀ

MaxClock (MHz)

143 MHz

Package

Temperatureꢀ

AS4C64M4SA-7TCN

Commercial 0°C to +70°C

64Mx4

54-pin TSOPII

AS4C64M4SA-6TIN

166 MHz

Industrial -40°C to +85°C

Table 2. Key Specifications

-6

Unit

AS4C64M4SA

-7

tCK3 Clock Cycle time(min.)

tAC3 Access time from CLK (max.)

tRAS Row Active time(min.)

5.4

tRC

Row Cycle time(min.)

Confidential

- 2 of 55 -

Rev.1.0 June 2017

123 4 5 6 7...55

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