DS1904L-F5#

DS1904L-F5# is a RTC iButton. It is a rugged real-time clock module that can be accessed with minimal hardware. Data is transferred serially via the 1-Wire protocol, which requires only a single data lead and a ground return. The DS1904 contains a unique 64-bit factory-lasered ROM and a real-time clock/calendar implemented as a binary counter. Accessories permit the DS1904 to be mounted on almost any surface including printed circuit boards and plastic key fobs. The DS1904 adds functions such as a calendar, time and date stamp, stopwatch, hour meter, interval timer, and logbook to any type of electronic device or embedded application that uses a microcontroller. This iButton features a unique, factory-lasered and tested 64-bit registration number (8-bit family code + 48-bit serial number + 8-bit CRC tester) that assures absolute traceability because no two parts are alike.

• Real-time clock/calendar in binary format, over 10 years of operation
• Uses the same binary time/date representation as the DS1994 but with 1 second resolution
• Clock accuracy is better than ±2minutes per month at +25°C
• Multidrop controller for MicroLAN, data can be accessed while affixed to object
• Digital identification and information by momentary contact
• Chip-based data carrier compactly stores information
• Economically communicates to host with a single digital signal at 16.3kbps
• Button shape is self-aligning with cup-shaped probes
• Durable stainless steel case engraved with registration number withstands harsh environments
• F5 MicroCan package, operating temperature range from -40°C to +85°C

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