DS1994 4kb Plus Time Memory IButton

The DS1994 Memory iButton is a rugged read/write data Carrier that acts as a localized database, easily accessible with minimal hardware. The nonvolatile memory and optional timekeeping capability offer a simple solution to storing and retrieving vital information pertaining to the object to which the iButton is attached. Data is transferred serially through the 1-Wire protocol that requires only a single data lead and a ground return.
The scratchpad is an additional page that acts as a Buffer when writing to memory. Data is first written to the scratchpad where it CAN be read back. After the data has been verified, a copy scratchpad command transfers the data to memory. This process ensures data integrity when modifying the memory. A 48-bit serial number is factory lasered into each DS1994 to provide a guaranteed unique identity that allows for absolute traceability. The durable MicroCan package is highly resistant to environmental hazards such as dirt, moisture, and shock. Its compact, coin-shaped profile is self-aligning with mating receptacles, allowing the DS1994 to be easily used by human operators. Accessories permit the DS1994 to be mounted on almost any surface including plastic key fobs, photo-ID badges, and PC boards.
The DS1994 also includes time-keeping functions, a Real-Time Clock calendar, interval Timer cycle Counter and programmable interrupts, in addition to the nonvolatile memory. The internal Clock CAN be programmed to deny memory access based on absolute time/date, total elapsed time, or the number of accesses. These features allow the DS1994 to be used to create a stopwatch, alarm Clock time and date stamp, logbook, hour meter, calendar, system power cycle Timer interval Timer and event scheduler.
By Maxim Integrated Products
Part Manufacturer Description Datasheet Samples
DS1994LF5 Maxim Integrated Products 4Kb Plus Time Memory iButton®
DS1994L-F5+ Maxim Integrated Products Memory Circuit, 4KX1, CMOS, MEDB2, ROHS COMPLIANT, MICROCAN-2
DS1994L-F5 Maxim Integrated Products Memory Circuit, 4KX1, CMOS, MEDB2, MICROCAN-2
DS1994 's PackagesDS1994 's pdf datasheet
DS1994L-F5 CAN




DS1994 Pinout, Pinouts
DS1994 pinout,Pin out
This is one package pinout of DS1994,If you need more pinouts please download DS1994's pdf datasheet.

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