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DS1248 PDF预览

DS1248

更新时间: 2024-09-23 22:54:35
品牌 Logo 应用领域
达拉斯 - DALLAS 静态存储器时钟
页数 文件大小 规格书
21页 285K
描述
1024k NV SRAM with Phantom Clock

DS1248 数据手册

 浏览型号DS1248的Datasheet PDF文件第2页浏览型号DS1248的Datasheet PDF文件第3页浏览型号DS1248的Datasheet PDF文件第4页浏览型号DS1248的Datasheet PDF文件第5页浏览型号DS1248的Datasheet PDF文件第6页浏览型号DS1248的Datasheet PDF文件第7页 
DS1248/DS1248P  
1024k NV SRAM with Phantom Clock  
www.maxim-ic.com  
FEATURES  
PIN ASSIGNMENT  
C Real-time clock (RTC) keeps track of  
hundredths of seconds, minutes, hours, days,  
date of the month, months, and years  
C 128k x 8 NV SRAM directly replaces  
volatile static RAM or EEPROM  
C Embedded lithium energy cell maintains  
calendar operation and retains RAM data  
C Watch function is transparent to RAM  
operation  
RST  
A16  
A14  
A12  
A7  
1
32  
31  
30  
29  
28  
27  
26  
25  
24  
23  
22  
21  
20  
19  
18  
17  
VCC  
A15  
NC  
WE  
A13  
A8  
2
3
4
5
6
7
8
9
10  
11  
12  
13  
14  
15  
16  
A6  
A5  
A9  
A11  
OE  
A10  
CE  
DQ7  
DQ6  
DQ5  
DQ4  
DQ3  
A4  
A3  
A2  
A1  
C Month and year determine the number of  
days in each month; valid up to 2100  
C Full 10% operating range  
A0  
DQ0  
DQ1  
DQ2  
GND  
C Operating temperature range: 0LC to +70LC  
C Over 10 years of data retention in the  
absence of power  
32-Pin Encapsulated Package  
740mil Flush  
C Lithium energy source is electrically  
disconnected to retain freshness until power  
is applied for the first time  
C DIP Module only  
34  
NC  
NC  
A14  
1
2
3
RST  
A15  
A16  
C Standard 32-pin JEDEC pinout  
C PowerCap® Module Board only  
Surface mountable package for direct  
connection to PowerCap containing  
battery and crystal  
33  
32  
31  
30  
29  
28  
27  
26  
25  
24  
23  
22  
21  
20  
19  
18  
A13  
A12  
A11  
A10  
A9  
4
5
6
7
8
9
NC  
VCC  
WE  
OE  
CE  
A8  
DQ7  
DQ6  
DQ5  
DQ4  
DQ3  
A7  
A6  
A5  
A4  
A3  
A2  
A1  
A0  
10  
11  
12  
13  
14  
15  
16  
17  
Replaceable battery (PowerCap)  
Pin for pin compatible with DS1244P  
and DS1251P  
DQ2  
DQ1  
DQ0  
GND  
VBAT X2  
X1 GND  
34-Pin PowerCap Module Board  
(Uses DS9034PCX PowerCap)  
PowerCap is a registered trademark of Dallas Semiconductor.  
1 of 21  
112801  

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