DS1647P-120

Interface:	Parallel
Base Part Number:	DS1647
Supplier Device Package:	34-PowerCap Module
Package / Case:	34-PowerCap™ Module
Mounting Type:	Surface Mount
Operating Temperature:	0°C ~ 70°C
Current - Timekeeping (Max):	4mA @ 4.5V ~ 5.5V
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:	512KB
Features:	Leap Year, NVSRAM
Type:	Clock/Calendar
Part Status:	Obsolete
Packaging:	Tube

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DS1647P-120 is a Real Time Clock (RTC) module designed by Dallas Semiconductor. It is used to provide timing functions in various network and control applications. It consists of two 16-bit registers, two 16-bit RAMs, and a 32 kHz crystal oscillator.The DS1647P-120 operates on +3.3V and +5V supply and provides a battery-backed real-time clock for tracking time and date information. The two 16-bit register and two 16-bit RAMs can be used to store data and time, as well as other user-defined program data. The 32 kHz crystal oscillator provides the time-base for the RTC, and is regulated by a voltage-controlled oscillator (VCO).The DS1647P-120 can be used in a variety of applications including medical, industrial, military and consumer electronics. It is ideal for applications in which high accuracy time and date are needed. The chip can be used to provide an accurate time base to systems that require precise synchronization. These applications include network servers, satellite and timing systems, communications networks, and industrial equipment controllers.Using the serial bus interface, users can access the time, date and RAM data stored within the DS1647P-120. The serial interface can be used to set alarms based on the time and date. The DS1647P-120 also provides a system reset output which can be used to reset the system when an alarm is triggered.The DS1647P-120 is designed with a wide operating temperature range and can be used in temperature extremes from -55°C up to +85°C. It is designed with CMOS technology making it energy efficient, and has low power consumption.The DS1647P-120 provides excellent accuracy in timing applications. It has been tested and found to have an accuracy of ±1 minute per day at 25°C, and ±1.5 minutes per day at operating temperature extremes. To achieve this accuracy the chip must be configured correctly and used in conjunction with a 32 kHz crystal.In summary, the DS1647P-120 Real Time Clock is a low power, accurate, and highly integrated timing solution. This chip is ideal for applications that require accurate time and date keeping, such as industrial equipment controllers, communications networks, and satellite and timing systems. With its wide temperature range and low power consumption, the DS1647P-120 is a great choice for any timing application.

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