The DS1340 is a serial real-time clock (RTC) offering a low-power clock/calendar with software clock calibration. Offering more features and priced lower than its pin-for-pin competition, the DS1340 is ideal for portable instruments, point-of-sale and medical equipment, and telecommunications applications. It has dual power pins for primary and backup power supplies, and it includes a programmable trickle charger. A two-wire serial bus transfers address and data, and the oscillator runs down to 1.3 V.

The RTC maintains 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 DS1340 is rated for operation over the industrial temperature range (–40° to 85°C), and is available in eight-pin SO and microSOP packages. The DS1340 costs $1.12 in 1000-piece quantities.

Maxim Integrated Products, Inc.
(408) 737-7600
www.maxim-ic.com