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DS3232

更新时间： 2023-12-20 18:44:41
品牌 Logo 应用领域
亚德诺 - ADI 静态存储器晶体
页数 文件大小 规格书
19页 422K
描述
超高精度、I2C RTC，集成晶体和SRAM

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中文翻译

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DS3232 数据手册

 浏览型号DS3232的Datasheet PDF文件第2页浏览型号DS3232的Datasheet PDF文件第3页浏览型号DS3232的Datasheet PDF文件第4页浏览型号DS3232的Datasheet PDF文件第5页浏览型号DS3232的Datasheet PDF文件第6页浏览型号DS3232的Datasheet PDF文件第7页 
DS3232  
2
Extremely Accurate I C RTC with  
Integrated Crystal and SRAM  
General Description  
Features  
♦ Accuracy 2ppm from 0°C to +40°C  
The DS3232 is a low-cost temperature-compensated  
crystal oscillator (TCXO) with a very accurate, tempera-  
ture-compensated, integrated real-time clock (RTC) and  
236 bytes of battery-backed SRAM. Additionally, the  
DS3232 incorporates a battery input and maintains accu-  
rate timekeeping when main power to the device is inter-  
rupted. The integration of the crystal resonator enhances  
the long-term accuracy of the device as well as reduces  
the piece-part count in a manufacturing line. The DS3232  
is available in commercial and industrial temperature  
ranges, and is offered in an industry-standard 20-pin,  
300-mil SO package.  
♦ Accuracy 3.5ppm from -40°C to +85°C  
♦ Battery Backup Input for Continuous  
Timekeeping  
♦ Operating Temperature Ranges  
Commercial: 0°C to +70°C  
Industrial: -40°C to +85°C  
♦ 236 Bytes of Battery-Backed SRAM  
♦ Low-Power Consumption  
♦ Real-Time Clock Counts Seconds, Minutes,  
Hours, Day, Date, Month, and Year with Leap Year  
Compensation Valid Up to 2099  
♦ Two Time-of-Day Alarms  
The RTC maintains seconds, minutes, hours, day, date,  
month, and year information. The date at the end of the  
month is automatically adjusted for months with fewer  
than 31 days, including corrections for leap year. The  
clock operates in either the 24-hour or 12-hour format  
with an AM/PM indicator. Two programmable time-of-  
day alarms and a programmable square-wave output  
are provided. Address and data are transferred serially  
♦ Programmable Square-Wave Output  
2
♦ Fast (400kHz) I C Interface  
♦ 3.3V Operation  
♦ Digital Temp Sensor Output: 3°C Accuracy  
♦ Register for Aging Trim  
♦ RST Input/Output  
♦ 300-Mil, 20-Pin SO Package  
♦ Underwriters Laboratories Recognized  
2
through an I C bidirectional bus.  
A precision temperature-compensated voltage refer-  
Ordering Information  
ence and comparator circuit monitors the status of V  
CC  
to detect power failures, to provide a reset output, and  
to automatically switch to the backup supply when nec-  
essary. Additionally, the RST pin is monitored as a  
pushbutton input for generating a µP reset.  
PIN-  
PACKAGE  
TOP  
MARK  
PART  
TEMP RANGE  
DS3232S#  
0°C to +70°C  
20 SO  
20 SO  
DS3232  
DS3232SN#  
-40°C to +85°C  
DS3232N  
Applications  
Utility Power Meters  
GPS  
#Denotes a RoHS-compliant device that may include lead that  
is exempt under the RoHS requirements. Lead finish is JESD97  
Category e3, and is compatible with both lead-based and  
lead-free soldering processes. A "#" anywhere on the top mark  
denotes a RoHS-compliant device.  
Servers  
Telematics  
Typical Operating Circuit  
Pin Configuration  
TOP VIEW  
V
V
CC  
CC  
R
PU  
= t / C  
R B  
N.C.  
N.C.  
1
2
3
4
5
6
7
8
9
20 SCL  
19 N.C.  
18 SCL  
17 SDA  
V
CC  
R
R
PU  
PU  
V
32kHz  
CC  
SCL  
SDA  
RST  
N.C.  
INT/SQW  
32kHz  
SCL  
V
CC  
SDA  
RST  
INT/SQW  
RST  
16  
15 GND  
14  
V
BAT  
DS3232  
V
BAT  
PUSH-  
BUTTON  
RESET  
μP  
DS3232  
N.C.  
N.C.  
N.C.  
N.C.  
N.C.  
N.C.  
N.C.  
N.C.  
N.C.  
N.C.  
N.C.  
13 N.C.  
12 N.C.  
11 N.C.  
N.C.  
N.C.  
N.C.  
GND  
N.C. 10  
SO  
For pricing, delivery, and ordering information, please contact Maxim Direct  
19-5337; Rev 5; 7/10  
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.  
1234567...19

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