DESCRIPTION

The DS2415 1-Wire Time Chip offers a simple solution for storing and retrieving vital time information with minimal hardware. The DS2415 contains a unique, lasered ROM and a real time clock/calendar implemented as a binary counter. Only one pin is required for communication with the device. Utilizing a backup energy source, the data is nonvolatile and allows for stand-alone operation. The DS2415 features can be used to add functions such as calendar, time and date stamp and logbook to any type of electronic device or embedded application that uses a microcontroller.

FEATURES

■ Real Time Clock with fully compatible 1- Wire MicroLAN interface

■ Uses the same binary time/date representation as the DS2404 but with 1 second resolution

■ Clock accuracy ±2 minutes per month at 25°C

■ Communicates at 16.3 kbits per second

■ Unique, factory-lasered and tested 64-bit registration number (8-bit family code + 48- bit serial number + 8-bit CRC tester) assures absolute traceability because no two parts are alike

■ 8-bit family code specifies device communication requirements to bus master

■ Built-in multidrop controller ensures compatibility with other MicroLAN products

■ Operates over a wide VDD voltage range of 2.5V to 5.5V from -40°C to +85°C

■ Low power, 200 nA typically with oscillator running

■ Compact, low cost 6-pin TSOC surface mount package