DS1372U+T&R

Real Time Clock Overview

The DS1372U+T&R is a real-time clock and binary counter manufactured by Analog Devices Inc./Maxim Integrated. It features a 32-bit binary up counter for timekeeping and a 24-bit down counter for programmable alarms. The device includes a unique factory-programmed 64-bit ID stored in read-only registers. Communication occurs via an I²C serial interface supporting standard (100kHz) and fast mode (400kHz). Operating voltage ranges from 2.4V to 5.5V, with a timekeeping range of 1.3V to 5.5V. It utilizes a 32.768kHz crystal and provides an SQW/INT open-drain output. The component is housed in an 8-pin µSOP package.

Real Time Clock Feature Summary

• 32-bit binary up counter and 24-bit alarm down counter
• Unique 64-bit factory-lasered ID with CRC validation
• I²C serial interface with two selectable slave addresses
• Programmable square wave or active-low interrupt output

Real Time Clock Applications

• Portable audio and video players
• Microsoft Windows Media DRM 10 compliant portable devices

Real Time Clock Procurement Notes

Verify the specific ordering suffix T&R indicates reel packaging when sourcing this component. Confirm that the U+ designation corresponds to the lead-free µSOP-8 package variant. Ensure compatibility with the required I²C bus speed and voltage levels before procurement.

Real Time Clock Selection Notes

Select this part for applications requiring a dedicated binary counter alongside timekeeping functions. The 1.3V minimum timekeeping voltage allows for extended battery life support. Verify that the system design accommodates the open-drain outputs on SDA and SQW/INT pins requiring external pull-up resistors.

Real Time Clock Part Context

This component belongs to the DS1372 series of real-time clocks. The 'U+' suffix denotes the 8-pin µSOP package and lead-free construction. The 'T&R' suffix specifies tape and reel packaging for automated assembly processes.

Real Time Clock Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.