The DS1374 is a 32-bit binary counter designed to continuously count time in seconds. An additional counter generates a periodic alarm or serves as a watchdog timer. If disabled, this counter can be used as 3 bytes of nonvolatile (NV) RAM. Separate output pins are provided for an interrupt and a square wave at one of four selectable frequencies. A precision temperature-compensated reference and comparator circuit monitor the status of VCC to detect power failures, provide a reset output, and automatically switch to the backup supply when necessary. Additionally, the reset pin is monitored as a pushbutton input for externally generating a reset. The device is programmed serially through an I²C serial interface. Applications * Medical Equipment * Point-of-Sale Equipment * Portable Instrumentation * Telecommunications * 32-Bit Binary Counter * Second Binary Counter Provides Time-of-Day Alarm, Watchdog Timer, or NV RAM * Separate Square-Wave and Interrupt Output Pins * I²C Serial Interface * Automatic Power-Fail Detect and Switch Circuitry * Single-Pin Pushbutton Reset Input/Open-Drain Reset Output * Low-Voltage Operation * Trickle-Charge Capability * -40°C to +85°C Operating Temperature Range * 10-Pin µSOP, 16-Pin SO * Available in a Surface-Mount Package with an Integrated Crystal (DS1374C) https://elecena.pl/product/22301220/i-c-32-bit-binary-counter-watchdog-rtc-with-trickle-charger-and-reset-input-output 2022-12-25 https://elecena.pl/product/22301220/i-c-32-bit-binary-counter-watchdog-rtc-with-trickle-charger-and-reset-input-output 2025-01-20