參數(shù)資料
型號(hào)： DS3231MZ/V+T
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 1/20頁(yè)
文件大?。?/td> 0K
描述： IC RTC I2C MEMS W/ALARM 8SO
標(biāo)準(zhǔn)包裝： 2,500
類型： 時(shí)鐘/日歷
特點(diǎn)： 警報(bào)器，閏年，方波輸出
時(shí)間格式： HH:MM:SS（12/24 小時(shí)）
數(shù)據(jù)格式： YY-MM-DD-dd
接口： I²C，2 線串口
電源電壓： 2.3 V ~ 5.5 V
電壓 - 電源，電池： 2.3 V ~ 5.5 V
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 8-SOIC（0.154"，3.90mm 寬）
供應(yīng)商設(shè)備封裝： 8-SOIC
包裝： 帶卷 (TR)
±5ppm, I2C Real-Time Clock
DS3231M
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
19-5312; Rev 5; 7/13
+Denotes a lead(Pb)-free/RoHS-compliant package.
/V denotes an automotive qualified part.
Typical Operating Circuit
General Description
The DS3231M is a low-cost, extremely accurate, I2C
real-time clock (RTC). The device incorporates a battery
input and maintains accurate timekeeping when main
power to the device is interrupted. The integration of
the microelectromechanical systems (MEMS) resona-
tor enhances the long-term accuracy of the device and
reduces the piece-part count in a manufacturing line.
The DS3231M is available in the same footprint as the
popular DS3231 RTC.
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 1Hz output are provided. Address and
data are transferred serially through an I2C bidirectional
bus. A precision temperature-compensated voltage
reference and comparator circuit monitors the status of
VCC to detect power failures, to provide a reset output,
and to automatically switch to the backup supply when
necessary. Additionally, the RST pin is monitored as a
pushbutton input for generating a microprocessor reset.
See the Block Diagram for more details.
Applications
Power Meters
Industrial Applications
Ordering Information
Features
S
Timekeeping Accuracy ±5ppm (±0.432 Second/
Day) from -45°C to +85°C
S
Battery Backup for Continuous Timekeeping
S
Low Power Consumption
S
Footprint and Functionally Compatible to DS3231
S
Complete Clock Calendar Functionality Including
Seconds, Minutes, Hours, Day, Date, Month, and
Year with Leap Year Compensation Up to Year
2100
S
Two Time-of-Day Alarms
S
1Hz and 32.768kHz Outputs
S
Reset Output and Pushbutton Input with
Debounce
S
Fast (400kHz) I2C-Compatible Serial Bus
S
+2.3V to +5.5V Supply Voltage
S
Digital Temp Sensor with ±3°C Accuracy
S
-45°C to +85°C Temperature Range
S
8-Pin or 16-Pin SO Packages
S
Underwriters Laboratories (UL) Recognized
DS3231M
SCL
SDA
32KHZ
VBAT
INT/SQW
RST
+3.3V
CPU
I/O PORT
INTERRUPTS
Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device
may be simultaneously available through various sales channels. For information about device errata, go to: www.maximintegrated.com/errata.
PART
TEMP RANGE
PIN-PACKAGE
DS3231MZ+
-45NC to +85NC
8 SO
DS3231MZ/V+
-45NC to +85NC
8 SO
DS3231M+
-45NC to +85NC
16 SO
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