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DS1248Y-70-IND PDF预览

DS1248Y-70-IND

更新时间: 2024-09-16 05:13:39
品牌 Logo 应用领域
达拉斯 - DALLAS /
页数 文件大小 规格书
21页 268K
描述
Real Time Clock, Non-Volatile, CMOS, 0.740 INCH, PLASTIC, MODULE, DIP-32

DS1248Y-70-IND 数据手册

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DS1248/DS1248P  
1024k NV SRAM with Phantom Clock  
www.maxim-ic.com  
FEATURES  
PIN ASSIGNMENT  
S Real-time clock (RTC) keeps track of  
RST  
hundredths of seconds, minutes, hours, days,  
date of the month, months, and years  
S 128k x 8 NV SRAM directly replaces  
volatile static RAM or EEPROM  
S Embedded lithium energy cell maintains  
calendar operation and retains RAM data  
S Watch function is transparent to RAM  
operation  
1
32  
31  
30  
29  
28  
27  
26  
25  
24  
23  
22  
21  
20  
19  
18  
17  
VCC  
A15  
NC  
WE  
A13  
A8  
A16  
A14  
A12  
A7  
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  
S Month and year determine the number of  
days in each month; valid up to 2100  
S Full 10% operating range  
A0  
DQ0  
DQ1  
DQ2  
GND  
S Operating temperature range 0LC to 70LC  
S Over 10 years of data retention in the  
absence of power  
32-Pin Encapsulated Package  
740-mil Flush  
S Lithium energy source is electrically  
disconnected to retain freshness until power  
is applied for the first time  
34  
NC  
NC  
A14  
S DIP Module only  
1
RST  
A15  
A16  
33  
32  
31  
30  
29  
28  
27  
26  
25  
24  
23  
22  
21  
20  
19  
18  
2
-
Standard 32-pin JEDEC pinout  
3
S PowerCap® Module Board only  
A13  
A12  
A11  
A10  
A9  
4
5
6
7
8
9
NC  
VCC  
WE  
-
Surface mountable package for direct  
connection to PowerCap containing  
battery and crystal  
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)  
1 of 21  
072401  

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