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DS1249AB-85 PDF预览

DS1249AB-85

更新时间: 2024-10-30 14:11:47
品牌 Logo 应用领域
美信 - MAXIM 静态存储器内存集成电路
页数 文件大小 规格书
9页 191K
描述
Non-Volatile SRAM Module, 256KX8, CMOS, 0.740 INCH, DIP-32

DS1249AB-85 技术参数

是否Rohs认证: 不符合生命周期:Obsolete
零件包装代码:MODULE包装说明:,
针数:32Reach Compliance Code:compliant
ECCN代码:3A991.B.2.AHTS代码:8542.32.00.41
风险等级:5.72JESD-30 代码:R-XDMA-P32
JESD-609代码:e0内存密度:2097152 bit
内存集成电路类型:NON-VOLATILE SRAM MODULE内存宽度:8
功能数量:1端子数量:32
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:UNSPECIFIED封装形状:RECTANGULAR
封装形式:MICROELECTRONIC ASSEMBLY并行/串行:PARALLEL
峰值回流温度(摄氏度):NOT SPECIFIED认证状态:Not Qualified
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
端子面层:TIN LEAD端子形式:PIN/PEG
端子位置:DUAL处于峰值回流温度下的最长时间:NOT SPECIFIED
Base Number Matches:1

DS1249AB-85 数据手册

 浏览型号DS1249AB-85的Datasheet PDF文件第2页浏览型号DS1249AB-85的Datasheet PDF文件第3页浏览型号DS1249AB-85的Datasheet PDF文件第4页浏览型号DS1249AB-85的Datasheet PDF文件第5页浏览型号DS1249AB-85的Datasheet PDF文件第6页浏览型号DS1249AB-85的Datasheet PDF文件第7页 
19-5631; Rev 11/10  
DS1249Y/AB  
2048k Nonvolatile SRAM  
www.maxim-ic.com  
FEATURES  
PIN ASSIGNMENT  
. 10 years minimum data retention in the  
absence of external power  
NC  
A16  
A14  
A12  
A7  
1
32  
31  
VCC  
A15  
A17  
WE  
A13  
A8  
2
3
4
30  
29  
. Data is automatically protected during power  
loss  
. Unlimited write cycles  
5
6
28  
27  
A6  
A5  
A4  
A9  
7
8
26  
25  
. Low-power CMOS operation  
. Read and write access times of 70 ns  
. Lithium energy source is electrically  
disconnected to retain freshness until power is  
applied for the first time  
. Full ± 10% VCC operating range (DS1249Y)  
. Optional ± 5% VCC operating range  
(DS1249AB)  
A11  
OE  
A10  
CE  
A3  
9
24  
23  
A2  
10  
A1  
11  
12  
22  
21  
DQ7  
DQ6  
DQ5  
DQ4  
DQ3  
A0  
DQ0  
DQ1  
DQ2  
GND  
13  
14  
15  
16  
20  
19  
18  
17  
. Optional industrial temperature range of  
-40°C to +85°C, designated IND  
. JEDEC standard 32-pin DIP package  
32-Pin ENCAPSULATED PACKAGE  
740-mil EXTENDED  
PIN DESCRIPTION  
A0 - A17  
DQ0 - DQ7  
CE  
- Address Inputs  
- Data In/Data Out  
- Chip Enable  
- Write Enable  
- Output Enable  
- Power (+5V)  
- Ground  
WE  
OE  
VCC  
GND  
NC  
- No Connect  
DESCRIPTION  
The DS1249 2048k Nonvolatile SRAMs are 2,097,152-bit, fully static, nonvolatile SRAMs organized as  
262,144 words by 8 bits. Each NV SRAM has a self-contained lithium energy source and control circuitry  
which constantly monitors VCC for an out-of-tolerance condition. When such a condition occurs, the  
lithium energy source is automatically switched on and write protection is unconditionally enabled to  
prevent data corruption. There is no limit on the number of write cycles which can be executed and no  
additional support circuitry is required for microprocessor interfacing.  
1 of 9  

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