DS1371

PRODUCTION

I²C, 32-Bit Binary Counter Watchdog Clock Industry's Lowest-Cost Single-Supply Binary Timekeeper for Ultra-Low-Power Applications

Analog Devices DS1371 Product Info

10 February 2026 7

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

Part details & applications

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 general-purpose 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.

Applications

Elapsed Time Measurements
Point-of-Sale Equipment
Portable Instrumentation
Servers

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