參數資料
型號： DS3231SN
英文描述： Extremely Accurate I2C-Integrated RTC/TXO/Crystal
中文描述： 非常精確的I2C集成RTC / TXO /水晶
文件頁數： 1/19頁
文件大小： 363K
代理商： DS3231SN
General Description
The DS3231 is a low-cost, extremely accurate I
2
C real-
time clock (RTC) with an integrated temperature-
compensated crystal oscillator (TCXO) and crystal. The
device 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 DS3231
is available in commercial and industrial temperature
ranges, and is offered in a 16-pin, 300-mil SO package.
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
through an I
2
C bidirectional bus.
A precision temperature-compensated voltage refer-
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 reset externally.
Applications
Utility Power Meters
GPS
Servers
Telematics
Features
Accuracy ±2ppm from 0°C to +40°C
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
Low-Power Consumption
Real-Time Clock Counts Seconds, Minutes,
Hours, Day, Date, Month, and Year with Leap Year
Compensation Valid Up to 2100
Two Time-of-Day Alarms
Programmable Square-Wave Output
Fast (400kHz) I
2
C Interface
3.3V Operation
Digital Temp Sensor Output: ±3°C Accuracy
Register for Aging Trim
RST
Input/Output
UL Recognized
Ordering Information
D
Extremely Accurate I
2
C-Integrated
RTC/TCXO/Crystal
______________________________________________
Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
Rev 2; 6/05
PART
TEMP RANGE
PIN-PACKAGE
TOP
MARK
DS3231S
DS3231SN
DS3231S+
DS3231SN+
+Denotes lead-free
0°C to +70°C
-40°C to +85°C
0°C to +70°C
-40°C to +85°C
16 SO
16 SO
16 SO
16 SO
DS3231
DS3231N
DS3231+
DS3231N+
Pin Configuration appears at end of data sheet.
Purchase of I
2
C components from Maxim Integrated Products, Inc., or one of its sublicensed Associated Companies, conveys a
license under the Philips I
2
C Patent Rights to use these components in an I
2
C system, provided that the system conforms to the I
2
C
Standard Specification as defined by Philips.
DS3231
V
CC
SCL
R
PU
R
PU
= t
R
/C
B
R
PU
INT/SQW
32kHz
V
BAT
PUSHBUTTON
RESET
SDA
RST
N.C.
N.C.
N.C.
N.C.
V
CC
V
CC
GND
V
CC
CPU
N.C.
N.C.
N.C.
N.C.
Typical Operating Circuit
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相關代理商/技術參數
參數描述
DS3231SN- 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Extremely Accurate I2C-Integrated
DS3231SN# 功能描述:實時時鐘 Integrated RTC/TCXO/Crystal RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時間格式:HH:MM:SS RTC 存儲容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube
DS3231SN#T&R 制造商:Maxim Integrated Products 功能描述:DS3231 16P SOIC ACC RTC 33V IND 制造商:Maxim Integrated Products 功能描述:REAL TIME CLOCK SERL 16SOIC W - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC RTC W/TCXO 16-SOIC 制造商:Maxim Integrated Products 功能描述:Real Time Clock Integrated RTC/TCXO/Crystal
DS3231SN#T&R 功能描述:實時時鐘 Integrated RTC/TCXO/Crystal RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時間格式:HH:MM:SS RTC 存儲容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube
DS3231SN/T&R 制造商:Maxim Integrated Products 功能描述:REAL TIME CLOCK SERL 16SOIC W - Tape and Reel 制造商:Maxim Integrated Products 功能描述:Real Time Clock Integrated RTC/TCXO/Crystal
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