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DS1245AB PDF预览

DS1245AB

更新时间: 2024-11-15 14:57:27
品牌 Logo 应用领域
亚德诺 - ADI 静态存储器
页数 文件大小 规格书
10页 223K
描述
1024k非易失SRAM

DS1245AB 数据手册

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19-5638; Rev 11/10  
DS1245Y/AB  
1024k 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  
NC  
WE  
A13  
A8  
2
3
4
30  
29  
. Data is automatically protected during power  
loss  
. Replaces 128k x 8 volatile static RAM,  
EEPROM or Flash memory  
. Unlimited write cycles  
. Low-power CMOS  
5
6
28  
27  
A6  
A5  
A4  
A9  
7
8
26  
25  
A11  
OE  
A10  
CE  
A3  
9
24  
23  
A2  
10  
A1  
. 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 (DS1245Y)  
. Optional ±5% VCC operating range  
(DS1245AB)  
. Optional industrial temperature range of  
-40°C to +85°C, designated IND  
. JEDEC standard 32-pin DIP package  
. PowerCap Module (PCM) package  
11  
12  
22  
21  
DQ7  
DQ6  
DQ5  
DQ4  
DQ3  
A0  
DQ0  
DQ1  
DQ2  
GND  
13  
14  
15  
16  
20  
19  
18  
17  
32-Pin Encapsulated Package  
740-mil Extended  
34  
NC  
NC  
A14  
1
2
3
NC  
33  
32  
31  
30  
A15  
A16  
NC  
4
5
6
A13  
A12  
A11  
A10  
A9  
-
-
Directly surface-mountable module  
Replaceable snap-on PowerCap provides  
lithium backup battery  
VCC  
29  
28  
27  
26  
25  
24  
23  
22  
21  
20  
19  
18  
WE  
7
OE  
8
CE  
9
A8  
DQ7  
10  
11  
12  
13  
14  
15  
16  
17  
A7  
A6  
A5  
A4  
A3  
A2  
A1  
A0  
-
-
Standardized pinout for all nonvolatile  
SRAM products  
Detachment feature on PowerCap allows  
easy removal using a regular screwdriver  
DQ6  
DQ5  
DQ4  
DQ3  
DQ2  
DQ1  
DQ0  
GND  
GND VBAT  
34-Pin PowerCap Module (PCM)  
(Uses DS9034PC+ or DS9034PCI+ PowerCap)  
PIN DESCRIPTION  
A0 - A16  
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  
1 of 10  

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DS1245AB-100 DALLAS

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DS1245AB-120IND+ ROCHESTER

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128KX8 NON-VOLATILE SRAM MODULE, 120ns, DMA32, 0.740 INCH, LEAD FREE, EXTENDED MODULE, DIP