CYM1851P6-12C PDF预览

CYM1851P6-12C

更新时间: 2025-07-27 22:10:15
品牌 Logo 应用领域
赛普拉斯 - CYPRESS /
页数 文件大小 规格书
9页 348K
描述
1,024K x 32 Static RAM Module

CYM1851P6-12C 技术参数

生命周期:Obsolete零件包装代码:SIMM
包装说明:SIMM, SSIM72针数:72
Reach Compliance Code:compliantECCN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:12 ns其他特性:CONFIGURABLE AS 1M X 32
I/O 类型:COMMONJESD-30 代码:R-PSMA-N72
JESD-609代码:e0内存密度:33554432 bit
内存集成电路类型:SRAM MODULE内存宽度:32
功能数量:1端口数量:1
端子数量:72字数:1048576 words
字数代码:1000000工作模式:ASYNCHRONOUS
最高工作温度:70 °C最低工作温度:
组织:1MX32输出特性:3-STATE
可输出:YES封装主体材料:PLASTIC/EPOXY
封装代码:SIMM封装等效代码:SSIM72
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最大待机电流:0.24 A
最小待机电流:4.5 V子类别:SRAMs
最大压摆率:1.52 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:MOS
温度等级:COMMERCIAL端子面层:TIN LEAD
端子形式:NO LEAD端子节距:1.27 mm
端子位置:SINGLE

CYM1851P6-12C 数据手册

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51  
CYM1851  
1,024K x 32 Static RAM Module  
mounted on an epoxy laminate substrate. Four chip selects are  
used to independently enable the four bytes. Reading or writ-  
ing can be executed on individual bytes or any combination of  
multiple bytes through proper use of selects.  
Features  
• High-density 32-megabit SRAM module  
• 32-bit Standard Footprint supports densities from 16K  
x 32 through 1M x 32  
The CYM1851 is designed for use with standard 72-pin SIMM  
sockets. The pinout is downward compatible with the 64-pin  
JEDEC ZIP/SIMM module family (CYM1821, CYM1831,  
CYM1836, and CYM1841). Thus, a single motherboard de-  
sign can be used to accommodate memory depth ranging from  
16K words (CYM1821) to 1,024K words (CYM1851). The  
CYM1851 is offered in vertical and angled SIMM configura-  
tions and both are available with either tin-lead or 10 mi-  
cro-inches of gold flash on the edge contacts.  
• High-speed SRAMs  
— Access time of 12 ns  
• Low active power  
— 8.36W (max.) at 12 ns  
• 72 pins  
• Available in ZIP, SIMM, or angled SIMM format  
Functional Description  
The CYM1851 is a high-performance 32-megabit static RAM  
module organized as 1,024K words by 32 bits. This module is  
constructed from eight 1,024K x 4 SRAMs in SOJ packages  
Presence detect pins (PD0PD3) are used to identify module  
memory density in applications where modules with alternate  
word depths can be interchanged.  
Logic Block Diagram  
Pin Configuration  
ZIP/SIMM  
Top View  
PD - GND  
0
PD - OPEN  
PD - GND  
2
NC  
PD  
1
3
5
1
NC  
3
PD  
0
2
4
A A  
0
19  
2
PD  
20  
GND  
PD - OPEN  
3
OE  
6
8
7
9
PD  
1
8
I/O  
0
WE  
I/O  
I/O  
1
10  
12  
14  
16  
18  
20  
22  
24  
26  
28  
30  
32  
11  
13  
15  
17  
19  
21  
23  
25  
27  
29  
31  
I/O  
I/O  
I/O  
9
10  
11  
I/O  
2
I/O  
3
1M x 4  
SRAM  
1M x 4  
SRAM  
I/O I/O  
I/O I/O  
4 7  
0
3
V
4
4
4
4
4
CC  
7
8
A
0
A
A
1
2
A
CS  
1
A
A
9
I/O  
I/O  
I/O  
I/O  
12  
13  
14  
15  
I/O  
I/O  
I/O  
I/O  
4
5
6
7
1M x 4  
SRAM  
1M x 4  
SRAM  
I/O I/O  
I/O I/O  
12  
8
11  
15  
23  
31  
4
GND  
WE  
CS  
CS  
CS  
2
3
4
33  
35  
A
15  
A
14  
34  
36  
CS  
CS  
2
CS  
1
1M x 4  
SRAM  
1M x 4  
I/O I/O  
I/O I/O  
16  
19  
20  
37  
39  
41  
43  
45  
47  
49  
51  
53  
55  
57  
59  
61  
63  
65  
67  
69  
71  
SRAM  
4
4
4
CS  
3
38  
40  
42  
44  
46  
48  
50  
52  
54  
56  
58  
60  
62  
64  
66  
68  
70  
72  
A
17  
A
16  
OE  
GND  
I/O  
I/O  
I/O  
I/O  
24  
25  
26  
27  
I/O  
16  
I/O  
17  
1M x 4  
SRAM  
1M x 4  
SRAM  
I/O I/O  
I/O I/O  
28  
I/O  
24  
27  
18  
I/O  
19  
A
3
A
10  
A
4
5
A
11  
12  
13  
20  
21  
22  
23  
A
A
V
CC  
A
A
6
I/O  
I/O  
I/O  
I/O  
I/O  
I/O  
I/O  
I/O  
28  
29  
30  
31  
GND  
A
18  
A
19  
NC  
NC  
Cypress Semiconductor Corporation  
Document #: 38-05274 Rev. **  
3901 North First Street  
San Jose  
CA 95134  
408-943-2600  
Revised March 15, 2002  

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