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DS1339U-3 其他数据使用手册 - Maxim Integrated（美信）
制造商:
Maxim Integrated（美信）
分类:
实时时钟芯片
封装:
uSOP
描述:
I²C串行实时时钟 I2C Serial Real-Time Clock
Pictures:
3D模型
符号图
焊盘图
引脚图
产品图
DS1339U-3数据手册
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GENERAL DESCRIPTION
The DS1339 serial real-time clock (RTC) is a low-
power clock/date device with two programmable time-
of-day alarms and a programmable square-wave
output. Address and data are transferred serially
through an I
2
C bus. The clock/date provides 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
AM/PM indicator. The DS1339 has a built-in power-
sense circuit that detects power failures and
automatically switches to the backup supply,
maintaining time, date, and alarm operation.
APPLICATIONS
Handhelds (GPS, POS Terminals)
Consumer Electronics (Set-Top Box, Digital
Recording, Network Appliance)
Office Equipment (Fax/Printers, Copier)
Medical (Glucometer, Medicine Dispenser)
Telecommunications (Routers, Switches, Servers)
Other (Utility Meter, Vending Machine, Thermostat,
Modem
)
FEATURES
Real-Time Clock (RTC) Counts Seconds, Minutes,
Hours, Day, Date, Month, and Year with Leap-
Year Compensation Valid Up to 2100
Available in a Surface-Mount Package with an
Integrated Crystal (DS1339C)
I
2
C Serial Interface
Two Time-of-Day Alarms
Programmable Square-Wave Output
Oscillator Stop Flag
Automatic Power-Fail Detect and Switch Circuitry
Trickle-Charge Capability
Underwriters Laboratory (UL) Recognized
Pin Configurations appear at end of data sheet.
ORDERING INFORMATION
PART TEMP RANGE VOLTAGE (V) PIN-PACKAGE TOP MARK†
DS1339C-2# -40°C to +85°C 2.0 16 SO (300 mils) DS1339C-2
DS1339C-3# -40°C to +85°C 3.0 16 SO (300 mils) DS1339C-3
DS1339C-33# -40°C to +85°C 3.3 16 SO (300 mils) DS1339C-33
DS1339U-2+ -40°C to +85°C 2.0
8 SOP
1339 rr-2
DS1339U-3+ -40°C to +85°C 3.0
8 SOP
1339 rr-3
DS1339U-33+ -40°C to +85°C 3.3
8 SOP
1339 rr-33
+ Denotes a lead(Pb)-free/RoHS-compliant device.
# Denotes a RoHS-compliant device that may include lead that is exempt under the RoHS requirements. The lead finish is JESD97 category
e3, and is compatible with both lead-based and lead-free soldering processes.
† A “+” anywhere on the top mark indicates a lead-free device. A “#” denotes a RoHS-compliant device. rr = second line, revision code
DS1339
I
2
C Serial Real-Time Clock
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