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CYM74B550PM-50C PDF预览

CYM74B550PM-50C

更新时间: 2024-11-07 19:46:15
品牌 Logo 应用领域
赛普拉斯 - CYPRESS 时钟静态存储器内存集成电路
页数 文件大小 规格书
8页 196K
描述
Cache Tag SRAM Module, 32KX64, 25ns, CMOS

CYM74B550PM-50C 技术参数

生命周期:Obsolete包装说明:DIMM, DIMM160
Reach Compliance Code:unknownECCN代码:3A991.B.2.A
HTS代码:8542.32.00.41风险等级:5.84
最长访问时间:25 ns其他特性:8K X 8 TAG; 16K X 1 DIRTY BIT
最大时钟频率 (fCLK):50 MHzI/O 类型:COMMON
JESD-30 代码:R-XDMA-N160内存密度:2097152 bit
内存集成电路类型:CACHE TAG SRAM MODULE内存宽度:64
功能数量:1端口数量:1
端子数量:160字数:32768 words
字数代码:32000工作模式:ASYNCHRONOUS
最高工作温度:70 °C最低工作温度:
组织:32KX64输出特性:3-STATE
可输出:YES封装主体材料:UNSPECIFIED
封装代码:DIMM封装等效代码:DIMM160
封装形状:RECTANGULAR封装形式:MICROELECTRONIC ASSEMBLY
并行/串行:PARALLEL电源:5 V
认证状态:Not Qualified最小待机电流:4.75 V
子类别:SRAMs最大压摆率:1.65 mA
最大供电电压 (Vsup):5.25 V最小供电电压 (Vsup):4.75 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:DUALBase Number Matches:1

CYM74B550PM-50C 数据手册

 浏览型号CYM74B550PM-50C的Datasheet PDF文件第2页浏览型号CYM74B550PM-50C的Datasheet PDF文件第3页浏览型号CYM74B550PM-50C的Datasheet PDF文件第4页浏览型号CYM74B550PM-50C的Datasheet PDF文件第5页浏览型号CYM74B550PM-50C的Datasheet PDF文件第6页浏览型号CYM74B550PM-50C的Datasheet PDF文件第7页 
1CYM74S550,  
CYM74S551  
CYM74B550  
CYM74P550A  
CYM74S550, CYM74S551  
PRELIMINARY  
OPTi Viper Chip Set Level II  
Cache Module Family  
volt SRAMs and 3.3 volt level translators. These modules offer  
3-2-2-2 performance at CPU bus speeds up to 66 MHz.  
Features  
• Pin-compatible secondary cache module family  
The synchronousmodules are available with low cost synchro-  
nous pipelined RAMs or high performance synchronous burst  
RAMs.  
• Asynchronous (CYM74B550), synchronous pipelined  
(CYM74P550A), or synchronous burst (CYM74S550,  
CYM74S551) modules  
The CYM74P550A is a high performance synchronous pipe-  
lined burst 256 KB module and is based on industry standard  
32Kx32 pipelined BSRAM. The CYM74P550A has series  
damping resistors on the data lines.  
• Ideal for Intel P54C/P55C systems with the OPTi Viper  
chipset  
• Operates at 50, 60, and 66 MHz  
• Uses cost-effective CMOS asynchronous SRAMs or  
high-performance synchronous SRAMs  
• 160-position Burndy DIMM CELP2X80SC3Z48 connec-  
tor  
The CYM74S550 and CYM74S551 are high performance syn-  
chronous burst cache modules that provide 256-Kbytes and  
512-Kbytes of cache respectively. These modules support  
3-1-1-1 performance at 66 MHz.  
• 3.3V inputs/ data outputs  
All of these modules include storage for 8-bits of tag and one  
dirty bit. Multiple ground pins and on-board decoupling capac-  
itors ensure high performance with maximum noise immunity.  
Functional Description  
This family of secondary cache modules is designed for Intel  
P54C/P55C systems with the OPTi Viper chip set.  
All components on the cache modules are surface mounted on  
a multi-layer epoxy laminate (FR-4) substrate. The contact  
pins are plated with 100 micro-inches of nickel covered by 10  
micro-inches of gold flash.  
CYM74B550 is a low cost asynchronous cache module that  
provides 256-Kbytes of cache with industry standard 32Kx8 5  
Logic Block Diagram  
-
CYM74B550  
PD  
PD  
NC  
PD  
PD  
0
3
2
1
TAGWE  
CYM74B550 NC  
GND GND  
16Kx1  
WE  
8Kx8  
DIRTYWE  
DIRTYI  
WE  
D
D
A
Q
TAG TAG  
7
0
A
13:0  
13:0  
–A  
5
A
17  
–A  
A
17  
5
A
17  
–A  
5
2X  
373C  
DIRTYO  
LA –LA  
17  
5
32Kx 8  
5V only SRAMs  
HACALE  
LE  
LA  
A
–LA  
17  
14:2  
5
CD –CD  
D
63  
0
A
1
OCA  
ECA  
4
4
A
0
WE  
OE  
CE  
ECAWE  
ECDOE  
CE  
CS  
CE  
CS  
CE  
CE  
CS  
CE  
CS  
CE  
CS  
CE  
CS  
LSB  
0
CS  
CS  
4
7
6
5
3
2
1
CS –CS  
7
0
100 ohms  
V
CC  
V
CC5  
4.3V zener  
5% tolerance  
7X  
CYBUS3384  
GND  
D
–D  
A
B
CD –CD  
63  
0
63  
0
module 3.3V compliant databus  
BE  
2
1
GND  
BE  
74b550-1  
Intel is a trademark of Intel Corporation.  
OPTi is a trademark of OPTi, Inc.  
Cypress Semiconductor Corporation  
3901 North First Street  
San Jose  
CA 95134  
July 1995 - Revised October 1996  
408-943-2600  

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