DS1747-70

Interface:	Parallel
Base Part Number:	DS1747
Supplier Device Package:	32-EDIP
Package / Case:	32-DIP Module (0.600", 15.24mm)
Mounting Type:	Through Hole
Operating Temperature:	0°C ~ 70°C
Current - Timekeeping (Max):	4mA @ 5V
Voltage - Supply, Battery:	--
Voltage - Supply:	4.5 V ~ 5.5 V
Series:	--
Date Format:	YY-MM-DD-dd
Time Format:	HH:MM:SS (24 hr)
Memory Size:	512KB
Features:	Leap Year, NVSRAM, Y2K
Type:	Clock/Calendar
Part Status:	Obsolete
Packaging:	Tube

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DS1747-70 Real Time Clocks

Real time clocks (RTCs) are essential components for many devices used in the digital world. The DS1747-70 real time clock (RTC) from Dallas Semiconductor is one of the leading RTC devices on the market and a versatile and expert choice for timing applications. This article will detail the application field, working principle and features of the DS1747-70.

Application Field

One of the main strengths of the DS1747-70 is its wide range of application opportunities. Its primary function is as an RTC, but it is used extensively in timing and synchronization markets. Some of the more popular applications are in consumer electronics, system management, industrial control and automotive applications. As an example of the latter, automotive applications are predominantly used in engine control, chassis control, accelerator and braking systems, emission control, and so on.

Working Principle

The DS1747-70 is a very efficient device, making use of numerous integrated circuits to provide its powerful performance. Being an RTC, it is capable of providing very accurate time readings. It uses a crystal oscillator and an integrated circuit to achieve highly accurate time measurements. The working principle of the DS1747-70 is based on using the accumulated crystal oscillator frequency over a period of time in order to obtain its metrics. The device is divided into two sections: the oscillator and the counter. The oscillator, which maintains the crystal frequency, and the counter, which accumulates the frequency, working together allow for highly accurate readings. The counter is built using a register which can store the accumulated number of oscillations.

Features

The DS1747-70 comes with a plethora of features, making it an invaluable tool in a variety of timing applications. It includes an on-chip temperature sensor, which can provide temperature information. This data can be used, for example, to power down a system when it is determined to be too hot. It also has an adjustable clock accuracy which can be set to a range of resolutions up to one second. The DS1747-70 also has a battery backup system, which preserves data and clock settings in case of power outage. It is equipped with a full-time power switch, so it can be put into low-power mode and still keep the time accurate. Additionally, the DS1747-70 comes with an alarm and event control feature which can be used to control events by setting a timer to a specific date and time. This can be used to control tasks such as periodic data backup, wireless communication, and system reset. Overall, the DS1747-70 is a powerful and precise RTC which is suited for applications across a broad range of industries. Not only does it come with the features outlined here, but it is also very durable and comes with a long lifespan. This makes it an ideal choice for use in a wide variety of timing and synchronization applications.

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