DS1251WP-120IND Overview
real time clocks is located in package 34-PowerCap™ Module.As of Tube, time clock is packaged in this way.There is 2.97V~3.63V voltage supply for this electrical RTC.It can be said that this electrical real time clock belongs to the Phantom Time Chip type.The real time clock (RTC) that is mounted in the way of Surface Mount is connected to this circuit board.In order to operate properly, the temperature should be -40°C~85°C.During the course of operation, Leap Year, NVSRAM can be ensured.There is the possibility of terminating transmission lines with 34 terminations, which means that the equipment used to terminate the line will match its characteristic impedance.In this case, the voltage supplied to the electronic component is 3.3V.A total of 34 pins are included in this product.DS1251 are the family name of RTCs .As far as the supply voltage for this electrical digital time clock is concerned, it is 3V.For the purpose of storing data and programs, the RTC times are embedded with a storage capacity of 512KB.Mounting type Surface Mount matches the RTC module.A total of 34 pins are attached to this real time clock.Maintaining the supply voltage at 3.3V is the key to high efficiency.There is a frequency of 120GHz that can be achieved.
DS1251WP-120IND Features
34-PowerCap™ Module package
34 terminations
34 pin count
Be maintained at 3.3V for high efficiency.

DS1251WP-120IND Applications
There are a lot of Maxim Integrated
DS1251WP-120IND Real Time Clocks applications.

Copy machines
Mobile equipment
Battery powered devices
Printers and copiers
Electronic metering
Digital cameras
White goods
Elapsed time counter
Network powered devices
Battery backed up systems

Mount	Surface Mount
Mounting Type	Surface Mount
Package / Case	34-PowerCap™ Module
Number of Pins	34
Operating Temperature	-40°C~85°C
Packaging	Tube
Published	2005
JESD-609 Code	e0
Feature	Leap Year, NVSRAM
Part Status	Obsolete
Moisture Sensitivity Level (MSL)	3 (168 Hours)
Number of Terminations	34
ECCN Code	3A991.B.2.A
Type	Phantom Time Chip
Terminal Finish	TIN LEAD
HTS Code	8473.30.11.40
Voltage - Supply	2.97V~3.63V
Terminal Position	DUAL
Peak Reflow Temperature (Cel)	225
Supply Voltage	3.3V
Frequency	120GHz
Time@Peak Reflow Temperature-Max (s)	30
Base Part Number	DS1251
Pin Count	34
Operating Supply Voltage	3.3V
Interface	Parallel
Memory Size	512KB
Access Time	120 ns
Logic Function	Clock
External Data Bus Width	8
Time Format	HH:MM:SS:hh (12/24 hr)
Date Format	YY-MM-DD-dd
Current - Timekeeping (Max)	7mA @ 3.3V
Time-Min	1/100SECOND
Interrupt Capability	N
Voltage - Supply, Battery	3V
Volatile	NO
Radiation Hardening	No
RoHS Status	Non-RoHS Compliant
Lead Free	Contains Lead