Real-time clock (RTCs)
Integrated Device Technology

DT real-time clocks (RTC) are ultra low power clock/date devices with programmable time-of-day alarms and programmable square-wave outputs. These devices offer high noise immunity, low current consumption, 12/24 hour mode of operation, auto correction for leap year and programmable square wave output, making them ideal for a wide range of design applications.

On Nov. 4, 2010, IDT announced its new real-time clock with temperature compensation, providing high accuracy over the full industrial temperature range. In addition, this new family of timing devices also features tamper-detect functionality to help protect systems that are prone to hacking. The IDT 5T90008 and 5T90012 real-time clocks feature 128 bytes of battery-backed RAM to store critical system data in event the main power is lost. These new timing devices also feature a back-up battery pin, which has power-sense circuitry to detect a loss of primary power and automatically switch to the backup supply. This helps maintain time and date operation in the event of a power loss.