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DS1746P-70IND PDF预览

DS1746P-70IND

更新时间: 2024-01-24 08:13:15
品牌 Logo 应用领域
达拉斯 - DALLAS 时钟
页数 文件大小 规格书
18页 226K
描述
Y2K-Compliant, Nonvolatile Timekeeping RAMs

DS1746P-70IND 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Active零件包装代码:DMA
包装说明:, MODULE,34LEAD,1.0针数:34
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8473.30.11.80Factory Lead Time:10 weeks
风险等级:1.41最大时钟频率:0.032 MHz
外部数据总线宽度:8信息访问方法:PARALLEL, DIRECT ADDRESS
中断能力:NJESD-30 代码:R-XDMA-U34
JESD-609代码:e3长度:25.019 mm
端子数量:34最高工作温度:85 °C
最低工作温度:-40 °C封装主体材料:UNSPECIFIED
封装等效代码:MODULE,34LEAD,1.0封装形状:RECTANGULAR
封装形式:MICROELECTRONIC ASSEMBLY峰值回流温度(摄氏度):NOT SPECIFIED
电源:3.3/5 V认证状态:Not Qualified
座面最大高度:2.3368 mm子类别:Timers or RTCs
最大供电电压:5.5 V最小供电电压:4.5 V
标称供电电压:5 V表面贴装:YES
技术:CMOS温度等级:INDUSTRIAL
端子面层:MATTE TIN端子形式:J INVERTED
端子节距:1.27 mm端子位置:DUAL
最短时间:SECONDS处于峰值回流温度下的最长时间:NOT SPECIFIED
易失性:NO宽度:23.495 mm
uPs/uCs/外围集成电路类型:TIMER, REAL TIME CLOCKBase Number Matches:1

DS1746P-70IND 数据手册

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DS1746/DS1746P  
Y2KC Nonvolatile Timekeeping RAM  
www.dalsemi.com  
FEATURES  
PIN ASSIGNMENT  
Integrated NV SRAM, real time clock,  
crystal, power-fail control circuit and lithium  
energy source  
Clock registers are accessed identical to the  
static RAM. These registers are resident in the  
eight top RAM locations.  
Century byte register; ie., Y2K compliant  
Totally nonvolatile with over 10 years of  
operation in the absence of power  
BCD coded century, year, month, date, day,  
hours, minutes, and seconds with automatic  
leap year compensation valid up to the year  
2100  
NC  
A16  
A14  
A12  
A7  
A6  
A5  
A4  
A3  
1
32  
31  
VCC  
A15  
NC  
WE  
A13  
A8  
2
3
4
30  
29  
5
6
28  
27  
A9  
7
8
26  
25  
A11  
OE  
A10  
CE  
9
10  
24  
23  
A2  
A1  
11  
12  
22  
21  
DQ7  
DQ6  
DQ5  
DQ4  
DQ3  
A0  
13  
14  
15  
16  
20  
19  
18  
17  
DQ0  
DQ1  
DQ2  
Battery voltage level indicator flag  
Power-fail write protection allows for ±10%  
GND  
32-Pin Encapsulated Package  
VCC power supply tolerance  
Lithium energy source is electrically  
disconnected to retain freshness until power is  
applied for the first time  
34  
NC  
NC  
A14  
1
2
3
4
5
6
7
8
9
10  
11  
12  
13  
14  
15  
16  
17  
NC  
A15  
A16  
33  
32  
31  
30  
29  
28  
27  
26  
25  
24  
23  
22  
21  
20  
19  
18  
DIP Module only  
-
Standard JEDEC bytewide 128k x 8 static  
RAM pinout  
A13  
A12  
A11  
A10  
A9  
RST  
VCC  
WE  
OE  
CE  
PowerCap Module Board only  
A8  
DQ7  
DQ6  
DQ5  
DQ4  
DQ3  
-
Surface mountable package for direct  
connection to PowerCap containing  
battery and crystal  
A7  
A6  
A5  
A4  
A3  
A2  
A1  
A0  
DQ2  
DQ1  
DQ0  
GND  
-
-
-
Replaceable battery (PowerCap)  
Power-On Reset Output  
Pin for pin compatible with other densities  
of DS174XP Timekeeping RAM  
VBAT X2  
X1 GND  
34-Pin PowerCap Module Board  
(Uses DS9034PCX PowerCap)  
1 of 18  
022101  

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