General Description

The DS1371 is a 32-bit binary counter that is designed to continuously count time in seconds. An additional counter that can generate a periodic alarm or serve as a watchdog timer is also provided. If enabled as a watchdog timer, the watchdog strobe input pin provides a hardware reset of the counter. If disabled, this counter can be used as 3 Bytes of generalpurpose RAM. A configurable output can be used as an interrupt or provide a square wave at one of four selectable frequencies. The device is programmed serially through a I2C bidirectional bus.

Features

■ 32-Bit Binary Counter

■ 24-Bit Binary Counter Provides Periodic Alarm, Watchdog Timer, or RAM

■ Strobe Input to Reset Watchdog Timer

■ Single Output Configurable as Interrupt or Square Wave

■ I2C Serial Interface

■ Low-Voltage Operation

■ Operating Temperature Range: -40°C to +85°C

■ Available in 8-Pin μSOP

Applications

    Servers

    Point-of-Sale Equipment

    Portable Instruments

    Elapsed Time Measurements