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HM538253BJ-8 PDF预览

HM538253BJ-8

更新时间: 2024-11-05 05:36:11
品牌 Logo 应用领域
尔必达 - ELPIDA 存储内存集成电路光电二极管动态存储器
页数 文件大小 规格书
56页 533K
描述
2 M VRAM (256-kword x 8-bit) Hyper Page Mode (HM538254B)

HM538253BJ-8 技术参数

是否Rohs认证: 不符合生命周期:Obsolete
零件包装代码:SOJ包装说明:SOJ, SOJ40,.44
针数:40Reach Compliance Code:unknown
ECCN代码:EAR99HTS代码:8542.32.00.02
风险等级:5.71Is Samacsys:N
访问模式:FAST PAGE最长访问时间:80 ns
其他特性:RAS ONLY/CAS BEFORE RAS/HIDDEN REFRESH; 512 X 8 SAM PORTJESD-30 代码:R-PDSO-J40
JESD-609代码:e0长度:25.8 mm
内存密度:2097152 bit内存集成电路类型:VIDEO DRAM
内存宽度:8功能数量:1
端口数量:2端子数量:40
字数:262144 words字数代码:256000
工作模式:ASYNCHRONOUS最高工作温度:70 °C
最低工作温度:组织:256KX8
封装主体材料:PLASTIC/EPOXY封装代码:SOJ
封装等效代码:SOJ40,.44封装形状:RECTANGULAR
封装形式:SMALL OUTLINE峰值回流温度(摄氏度):NOT SPECIFIED
电源:5 V认证状态:Not Qualified
座面最大高度:3.76 mm最大待机电流:0.007 A
子类别:Other Memory ICs最大压摆率:0.19 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:YES
技术:CMOS温度等级:COMMERCIAL
端子面层:Tin/Lead (Sn/Pb)端子形式:J BEND
端子节距:1.27 mm端子位置:DUAL
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:10.16 mm
Base Number Matches:1

HM538253BJ-8 数据手册

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HM538253B Series  
HM538254B Series  
2 M VRAM (256-kword × 8-bit)  
Hyper Page Mode (HM538254B)  
E0163H10 (Ver. 1.0)  
(Previous ADE-203-264A/265 (Z))  
Jul. 6, 2001 (K)  
Description  
The HM538253B/HM538254B is a 2-Mbit multiport video RAM equipped with a 256-kword × 8-bit dynamic  
RAM and a 512-word × 8-bit SAM (full-sized SAM). Its RAM and SAM operate independently and  
asynchronously. The HM538253B/HM538254B is upwardly compatible with the HM534253B/HM538123B  
except that the pseudo-write-transfer cycle is replaced with masked-write-transfer cycle, which has been  
approved by JEDEC. Furthermore, several new features have been added to the HM538253B/HM538254B  
which do not conflict with the conventional features. The stopping column feature realizes allows greater  
flexibility for split SAM register lengths. Persistent mask is also installed according to the TMS34020  
features. The HM538254B has Hyper page mode which enables fast page cycle.  
Features  
Multiport organization:RAM and SAM can operate asynchronously and simultaneously:  
RAM: 256-kword × 8-bit  
SAM: 512-word × 8-bit  
Access time  
RAM: 70 ns/80 ns/100 ns max  
SAM: 20 ns/23 ns/25 ns max  
Cycle time  
RAM: 130 ns/150 ns/180 ns min  
SAM: 25 ns/28 ns/30 ns min  
Low power  
Active  
RAM: 605 mW/550 mW/495 mW  
SAM: 358 mW/330 mW/303 mW  
Standby 38.5 mW max  
Masked-write-transfer cycle capability  
Stopping column feature capability  
Persistent mask capability  
Elpida Memory, Inc. is a joint venture DRAM company of NEC Corporation and Hitachi, Ltd.  

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