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Real-time clocks save up to 73% board space

Posted: 22 Jul 2009 ?? ?Print Version ?Bookmark and Share

Keywords:real-time clock? RTC? portable application?

ISL12058 RTC

Intersil Corp. has released three tiny, razor-thin real-time clock (RTC) products that are intended for low-voltage and portable applications.

The ISL12057 and ISL12058, require 2mm x 2mm, a 73 percent reduction in board space versus their closest competitors. At 0.55mm thick, the 8-lead devices are 45 percent thinner than similar products on the market.

The ISL12057 is available in this 2mm x 2mm 8-lead ?TDFN plastic package, which offers enhanced ruggedness and durability in portable applications. For added design versatility, the devices are also available in a 3mm x 3mm 8-lead TDFN, MSOP and SOIC packages.

In addition, the ISL12058 offers package choices in the 2mm x 2mm ?TDFN, 3mm x 3mm TDFN, 8-lead MSOP and 8-lead SOIC options.

The ISL12059 is available in the industry-standard SOIC package.

With operation from 1.4V to 3.6V, these new RTCs are well suited for battery-powered, portable applications such as remote utility meters, copy/fax/scanner/printers, digital photo albums and other applications.

The RTC and calendar uses an external 32.768kHz crystal that tracks time by date, year, months, week, and hour, minute or seconds. Multiple selectable alarms allow a flexibility of alarm choices, with outputs for beepers or lights. The calendar is accurate through 2099, with automatic leap-year correction. The two-wire I?C interface in the ISL12057/8/9 is widely used around the world, which simplifies design-in and enhances ease of manufacturability.

The ISL12057/8/9 family of products is Pb-free (RoHS-compliant), pin- and software-compatible with legacy devices for easy design-in.

Pricing starts at $0.92 each in 1,000-piece quantities in all package types for the IS12057, ISL12058 and ISL12059.

- Ismini Scouras

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