DS1374C-33#T&R

DS1374C-33#T&R is a I2C, 32bit binary counter watchdog RTC with trickle charger and reset input/output. It 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 non volatile (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. Typical applications include portable instruments, point-of-sale equipment, medical equipment and telecommunications.

• 3.3V supply voltage
• Second binary counter provides time-of-day alarm, watchdog timer, or NV RAM
• Separate square-wave and interrupt output pins
• Automatic power-fail detect and switch circuitry
• Single-pin pushbutton reset input/open-drain reset output
• Low-voltage operation
• Trickle-charge capability
• Available in 16 pin SOIC package
• Underwriters Laboratories (UL) recognized

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party