DS1743P-70

Interface:	Parallel
Base Part Number:	DS1743
Supplier Device Package:	34-PowerCap Module
Package / Case:	34-PowerCap™ Module
Mounting Type:	Surface Mount
Operating Temperature:	0°C ~ 70°C
Current - Timekeeping (Max):	3mA @ 5V
Voltage - Supply, Battery:	3V
Voltage - Supply:	4.5 V ~ 5.5 V
Series:	--
Date Format:	YY-MM-DD-dd
Time Format:	HH:MM:SS (24 hr)
Memory Size:	8KB
Features:	Leap Year, NVSRAM, Y2K
Type:	Clock/Calendar
Part Status:	Discontinued at Digi-Key
Packaging:	Tube

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

DS1743P-70 Application Field and Working Principle

The DS1743P-70 is a real-time clock (RTC) device, designed to replace its predecessor, the DS1743P-48, a popular low power clock module. The device is optimized for applications that require the highest reliability and accuracy, while employing minimal power consumption. The built-in oscillator circuit offers an extraordinary stability over wide range of temperatures and power supply variations.

Overview

The DS1743P-70 RTC is a single-chip CMOS integrated circuit that successfully eliminates the need for external time-keeping components while providing minute error-free timekeeping and alarm functionality in low power applications. The clock module includes a real-time clock as well as a 24-hour alarm/calendar/counter (ACDC) controller. It features a 4-bit asynchronous counter for providing alarms at a precise time, along with an embedded programmable timer for periodic alarms.

Applications

The DS1743P-70 RTC is a great choice for applications requiring the monitoring of time and date in various industrial projects, such as intelligent vending systems, equipment control systems, data logging, instrumentation, and access control. Additionally, its integrated counters, dividers and timers, makes it ideal for applications in automation, security and surveillance, video systems, medical equipment, and other embedded systems.

Working Principle

The DS1743P-70 works on a single integrated circuit, which includes an oscillator, alarm and clock unit, 32 bytes of memory, a divider, and a timer. This circuit is powered by a lithium cell battery and a crystal oscillator, and is programmed by an external crystal oscillator connected to it. The crystal oscillator works on a frequency of 32.768KHz and provides a very accurate and stable clock for the device.The real-time clock is programmed to a certain frequency and the ACCDC controller reads it and produces an interrupt each second. This pulse is used to update the time registers and decrement the counter. When the counter reaches 0, a second interrupt occurs, starting the process again. This is how the timekeeping is done in accurate intervals of 1 second.The timekeeper and the ACCDC controller are able to automatically detect whether it\'s a leap year or not, and can accurately calculate the day, month, and year of the day. The time can also be set manually using the time and date registers.The embedded programmable timer of the DS1743P-70 provides periodic alarms and division clocks to the microcontroller. The timer clock is programmable for an interval of 1 millisecond to nearly 24 hours. The pulse output is a square wave signal with programmable duty cycles.In addition, the DS1743P-70 offers alarm and calendar clock capabilities. It can store two independent alarm times and trigger an alarm at a predetermined time. The clock registers can also be programmed for daily or weekly alarms, or for daily counter events.

Conclusion

The DS1743P-70 is a great real-time clock module for accurate timekeeping and alarm/calendar/counter controller applications in industrial and low power embedded systems. It provides an extraordinary stability over wide ranges of temperatures and power supply variations and eliminates the need for external time-keeping components while providing accurate error-free timekeeping and alarm functionality. The built-in programmable timer adds an additional aspect of versatility, making it useful for applications in automation, security and surveillance, video systems, medical equipment, and other embedded systems.

The specific data is subject to PDF, and the above content is for reference

Part Number	Manufacturer	Price	Quantity	Description