DS1344E-18+

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The DS1344E-18+, a Real Time Clock from Dallas Semiconductor, is a low power CMOS Digital Counter which can be used for different applications such as alarms and timers, industrial and consumer applications. The device provides precise timekeeping and the accuracy of its oscillator is ±20ppm or 80ppm respectively under ideal and extreme temperature conditions. It also offers a power failure detection feature which automatically switches to the battery supply when the main power is interrupted or is not available anymore.

The DS1344E-18+ consists of 128 x 8 NV SRAM and a Real Time Clock/Calendar with a built-in Crystal oscillator and battery backup. It provides a multi-function counter that can be programmed to several modes such as sleep timer, alarm, delay-on, time-on etc. It also has a built-in power-failure detector that can detect when the main power is interrupted or fails, and will then switch over to the Lithium battery.

When used as a clock, the DS1344E-18+ is capable of keeping track of both time and date. It operates on a battery supply and can count up to 99 minutes in increments of 1/10 second. It is also programmable for both 12 and 24-hour format, and can program the alarms and other events for a specified period. The device has two separate alarm outputs, one can be configured as a real-time alarm, and the other can be programmed to be activated at an arbitrary time or to repeat on a periodic basis.

The DS1344E-18+ also includes an interrupt function which is triggered on certain events like exceeding a specific temperature or during an alarm event. This feature can be used to generate an interrupt request signal for microcontrollers or other logic circuits. It also has two voltage (VDD and VSS) pins that are provided for controlling the power supply to the device, ensuring that it will not draw too much energy when in standby mode. This makes it ideal for applications that require low power consumption while in idle mode.

The DS1344 uses a self-calibrating clock oscillator that keeps time within ±20ppm or 80ppm respectively under ideal and extreme temperature conditions. It is capable of precise timekeeping, even in environments where high humidity, fluctuating temperature, and electromagnetic interference are present. This makes it an ideal choice for industrial and consumer applications that require precise timekeeping and accurate timing.

The DS1344E-18+ Real Time Clock from Dallas Semiconductor can be used in a variety of applications, ranging from consumer electronics and office equipment to industrial automation systems. Its precision and accuracy make it perfect for reliable timing applications, such as alarms and timers, as well as its ability to switch to the battery supply in the case of power failure. The device also features a multi-function counter that can be programmed according to specific needs and offers two separate alarm outputs for better event control. The DS1344E-18+ is a reliable and low power choice when accurate real time clock and calendar functions are required.

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