DS1337 데이터 시트보기 (PDF) - Maxim Integrated

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DS1337

I2C Serial Real-Time Clock

Maxim Integrated 

19-4652; 7/09

www.maxim-ic.com

GENERAL DESCRIPTION

The DS1337 serial real-time clock is a low-power

clock/calendar 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/calendar 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 device is fully accessible through the serial

interface while VCC is between 1.8V and 5.5V. I2C

operation is not guaranteed below 1.8V.

Timekeeping operation is maintained with VCC as low

as 1.3V.

APPLICATIONS

Handhelds (GPS, POS Terminal, MP3 Player)

Consumer Electronics (Set-Top Box, VCR/Digital

Recording)

Office Equipment (Fax/Printer, Copier)

Medical (Glucometer, Medicine Dispenser)

Telecommunications (Router, Switch, Server)

Other (Utility Meter, Vending Machine, Thermostat,

Modem)

TYPICAL OPERATING CIRCUIT

DS1337

I2C Serial Real-Time Clock

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 (DS1337C)

 I2C Serial Interface

 Two Time-of-Day Alarms

 Oscillator Stop Flag

 Programmable Square-Wave Output

Defaults to 32kHz on Power-Up

 Available in 8-Pin DIP, SO, or SOP

 -40C to +85C Operating Temperature Range

ORDERING INFORMATION

PART

DS1337+

DS1337S+

DS1337U+

DS1337C#

TEMP RANGE

-40°C to +85°C

-40°C to +85°C

-40°C to +85°C

-40°C to +85°C

PIN-PACKAGE

8 DIP (300 mils)

8 SO (150 mils)

8 SOP

16 SO (300 mils)

TOP

MARK†

DS1337

DS1337

1337

DS1337C

+ 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 denotes a lead-free device. A

“#” denotes a RoHS-compliant device.

Pin Configurations appear at end of data sheet.

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.maxim-ic.com/errata.

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