DS1339U-33TR

更新时间： 2024-10-01 12:56:23

品牌	Logo	应用领域
美信 - MAXIM		时钟
页数	文件大小	规格书
20页	260K
描述
I2C Serial Real-Time Clock

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数据手册

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DS1339U-33TR 数据手册

19-5770; Rev 4/11

DS1339

I²C Serial Real-Time Clock

GENERAL DESCRIPTION

FEATURES

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 I²C 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.

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)

I²C 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 Laboratories (UL) Recognized

Pin Configurations appear at end of data sheet.

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)

ORDERING INFORMATION

PART

DS1339C-2#

DS1339C-3#

DS1339C-33#

DS1339U-2+

DS1339U-3+

DS1339U-33+

TEMP RANGE

-40°C to +85°C

VOLTAGE (V)

PIN-PACKAGE

16 SO (300 mils)

8 µSOP

TOP MARK†

DS1339C-2

DS1339C-3

DS1339C-33

1339 rr-2

2.0

3.0

3.3

2.0

3.0

3.3

1339 rr-3

8 µSOP

1339 rr-33

+Denotes a lead(Pb)-free/RoHS-compliant package.

#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(Pb)-free device. A “#” denotes a RoHS-compliant device. rr = second line, revision code

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