Real-time clocks are small and thin

Milpitas, Calif.—Intersil Corp. is offering three tiny, razor-thin real-time clock (RTC) products that are intended for low-voltage and portable applications.

According to Intersil, the smallest of these products, the ISL12057 and ISL12058, require 2mm x 2mm, a 73% 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, Intersil said.

The ISL12057 is available in this 2mm x 2mm 8-lead µTDFN 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, and MSOP and SOIC packages.

In addition, the ISL12058 offers package choices in the 2mm x 2mm µTDFN, 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 hundreds of other applications.

The real time clock and calendar uses an external 32.768 kHz 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 I²C 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.

Availability: Production.
Datasheets: ISL12057, ISL12058 and ISL12059.


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