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TM497BBK32-60 PDF预览

TM497BBK32-60

更新时间： 2024-01-14 17:24:58
品牌 Logo 应用领域
德州仪器 - TI 内存集成电路动态存储器
页数 文件大小 规格书
9页 121K
描述
4194304 BY 32-BIT DYNAMIC RAM MODULE

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TM497BBK32-60 技术参数

是否无铅： 含铅生命周期：Obsolete
零件包装代码：SIMM包装说明：SIMM-72
针数：72Reach Compliance Code：unknown
ECCN代码：EAR99HTS代码：8542.32.00.02
风险等级：5.84Is Samacsys：N
访问模式：FAST PAGE最长访问时间：60 ns
其他特性：RAS ONLY/CAS BEFORE RAS/HIDDEN REFRESHI/O 类型：COMMON
JESD-30 代码：R-XSMA-N72内存密度：134217728 bit
内存集成电路类型：FAST PAGE DRAM MODULE内存宽度：32
功能数量：1端口数量：1
端子数量：72字数：4194304 words
字数代码：4000000工作模式：ASYNCHRONOUS
最高工作温度：70 °C最低工作温度：
组织：4MX32输出特性：3-STATE
封装主体材料：UNSPECIFIED封装代码：SIMM
封装等效代码：SSIM72封装形状：RECTANGULAR
封装形式：MICROELECTRONIC ASSEMBLY电源：5 V
认证状态：Not Qualified刷新周期：2048
座面最大高度：25.527 mm自我刷新：NO
最大待机电流：0.008 A子类别：DRAMs
最大压摆率：0.88 mA最大供电电压 (Vsup)：5.5 V
最小供电电压 (Vsup)：4.5 V标称供电电压 (Vsup)：5 V
表面贴装：NO技术：CMOS
温度等级：COMMERCIAL端子形式：NO LEAD
端子节距：1.27 mm端子位置：SINGLE
Base Number Matches：1

TM497BBK32-60 数据手册

 浏览型号TM497BBK32-60的Datasheet PDF文件第2页浏览型号TM497BBK32-60的Datasheet PDF文件第3页浏览型号TM497BBK32-60的Datasheet PDF文件第4页浏览型号TM497BBK32-60的Datasheet PDF文件第5页浏览型号TM497BBK32-60的Datasheet PDF文件第6页浏览型号TM497BBK32-60的Datasheet PDF文件第7页 
TM497BBK32, TM497BBK32S  
4194304 BY 32-BIT  
DYNAMIC RAM MODULE  
SMMS433B – JANUARY 1993 – REVISED JUNE 1995  
Organization . . . 4194304 × 32  
Presence Detect  
Performance Ranges:  
Single 5-V Power Supply (±10% Tolerance)  
ACCESS ACCESS ACCESS READ OR  
72-Pin Single-In-Line Memory Module  
(SIMM) for Use With Sockets  
TIME  
TIME  
TIME  
WRITE  
CYCLE  
(MIN)  
t
t
t
RAC  
AA  
CAC  
(MAX)  
60 ns  
70 ns  
80 ns  
(MAX)  
30 ns  
35 ns  
40 ns  
(MAX)  
15 ns  
18 ns  
20 ns  
Utilizes Eight 16-Megabit DRAMs in Plastic  
Small-Outline J-Lead (SOJ) Packages  
’497BBK32-60  
’497BBK32-70  
’497BBK32-80  
110 ns  
130 ns  
150 ns  
Long Refresh Period  
32 ms (2048 Cycles)  
Low Power Dissipation  
All Inputs, Outputs, Clocks Fully TTL  
Compatible  
Operating Free-Air-Temperature Range  
0°C to 70°C  
3-State Output  
†
Gold-Tabbed Version Available:  
Common CAS Control for Eight Common  
Data-In and Data-Out Lines in Four Blocks  
TM497BBK32  
Tin-Lead (Solder) Tabbed Version  
Available: TM497BBK32S  
Enhanced Page Mode Operation With  
CAS-Before-RAS (CBR), RAS-Only, and  
Hidden Refresh  
description  
The TM497BBK32 is a 16M-byte dynamic random-access memory (DRAM) organized as four times 4194304  
× 8 in a 72-pin leadless single-in-line memory module (SIMM). The SIMM is composed of eight TMS417400DJ,  
4194304 × 4-bit DRAMs, each in 24/26-lead plastic small-outline J-lead (SOJ) packages mounted on a  
substrate with decoupling capacitors. The TMS417400DJ is described in the TMS417400 data sheet.  
The TM497BBK32 SIMM is available in the single-sided BK leadless module for use with sockets. The  
TM497BBK32 SIMM features RAS access times of 60 ns, 70 ns, and 80 ns. This device is characterized for  
operation from 0°C to 70°C.  
operation  
The TM497BBK32 operates as eight TMS417400DJs connected as shown in the functional block diagram and  
Table 1. The common I/O feature dictates the use of early write cycles to prevent contention on D and Q.  
refresh  
The refresh period is extended to 32 ms and, during this period, each of the 2048 rows must be strobed with  
RAS in order to retain data. CAS can remain high during the refresh sequence to conserve power.  
power up  
To achieve proper operation, an initial pause of 200 µs followed by a minimum of eight initialization cycles is  
required after full V level is achieved. These eight initialization cycles need to include at least one refresh  
CC  
(RAS-only or CBR) cycle.  
†
Part numbers in this data sheet are for the gold-tabbed version; the information applies to both gold-tabbed and solder-tabbed versions.  
Copyright 1995, Texas Instruments Incorporated  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of Texas Instruments  
standard warranty. Production processing does not necessarily include  
testing of all parameters.  
1
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443  
1234567...9

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