Real-Time Clock With I2C Serial Interface

NOTICE - The following device(s) are recommended alternatives:

The 1337G device is a low power serial real-time clock (RTC) 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 device 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.

Features

  • Real-Time Clock (RTC) counts seconds, minutes, hours, day, date, month, and year with leap-year compensation valid up to 2100
  • Packaged in 8-pin MSOP, 8-pin SOIC, 16-pin QFN (without integrated crystal), or 16-pin SOIC (surface-mount package with an integrated crystal)
  • I2C Serial interface (Normal and Fast modes)
  • Two time-of-day alarms
  • Oscillator Stop Flag
  • Programmable square-wave output defaults to 32 kHz on power-up
  • Operating voltage of 1.8 to 5.5 V
  • Industrial temperature range (-40 to +85°C)

Product Options

Orderable Part ID Part Status Pkg. Code Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
1337GDVGI Not Recommended for New Designs DVG8 TSSOP 8 I Yes Tube
Availability
1337GDVGI8 Not Recommended for New Designs DVG8 TSSOP 8 I Yes Reel
Availability
1337GCSRI Obsolete PI16 SOIC 16 I No Tube
Availability
1337GCSRI8 Obsolete PI16 SOIC 16 I No Reel
Availability
1337GDCGI Obsolete DCG8 SOIC 8 I Yes Tube
Availability
1337GDCGI8 Obsolete DCG8 SOIC 8 I Yes Reel
Availability
1337GNLGI Obsolete NLG16P2 VFQFPN 16 I Yes Tube
Availability
1337GNLGI8 Obsolete NLG16P2 VFQFPN 16 I Yes Reel
Availability

Technical Documentation

Title Other Languages Type Format File Size Date
Datasheets & Errata
1337AG Datasheet Datasheet PDF 260 KB Jul 14, 2017
1337G Datasheet Datasheet PDF 273 KB Aug 1, 2013
Application Notes & White Papers
AN-828 Termination - LVPECL Application Note PDF 229 KB Jul 5, 2016
AN-845 Termination - LVCMOS Application Note PDF 62 KB May 12, 2014
AN-844 Termination - AC Coupling Clock Receivers Application Note PDF 82 KB May 12, 2014
AN-842 Thermal Considerations in Package Design and Selection Application Note PDF 403 KB May 11, 2014
AN-840 Jitter Specifications for Timing Signals Application Note PDF 349 KB May 7, 2014
AN-839 RMS Phase Jitter Application Note PDF 149 KB May 6, 2014
AN-838 Peak-to-Peak Jitter Calculations Application Note PDF 32 KB May 6, 2014
AN-827 Application Relevance of Clock Jitter Application Note PDF 1.06 MB Apr 23, 2014
AN-815 Understanding Jitter Units Application Note PDF 476 KB Apr 23, 2014
AN-805 Recommended Ferrite Beads Application Note PDF 38 KB Jan 14, 2014
PCNs & PDNs
PDN# : CQ-14-02R2 Product Discontinuation Notice PDF 549 KB Aug 4, 2014
PCN# : W1101-02R4 Fab 4 to TSMC Product Change Notice PDF 70 KB Jun 30, 2014
PCN# : W1101-02R3 Fab 4 to TSMC Product Change Notice PDF 71 KB Apr 7, 2014
PDN# : CQ-14-02R1 PRODUCT DISCONTINUANCE NOTICE Product Discontinuation Notice PDF 545 KB Feb 10, 2014
PDN# : CQ-14-02 PRODUCT DISCONTINUANCE NOTICE Product Discontinuation Notice PDF 544 KB Jan 25, 2014
PCN# : W1101-02R2 Fab 4 to TSMC Product Change Notice PDF 67 KB Jan 25, 2014
PCN# : A1305-01 Gold Wire to Copper Wire Product Change Notice PDF 148 KB Jul 28, 2013
PCN# : A1208-01R1 Gold to Copper Wire Product Change Notice PDF 254 KB Dec 20, 2012
PCN# : A1208-06 Changed of Assembly Location and Crystal Product Change Notice PDF 1.06 MB Nov 17, 2012
PCN# : W1101-02 WAFER FAB TRANSFER FROM FAB 4 TO TSMC ON SELECTIVE DEVICES Product Change Notice PDF 70 KB Mar 14, 2011
Other
Real Time Clocks Product Brief PDF 441 KB Apr 30, 2008