DS1557WP-120IND+ Overview
In the 34-PowerCap™ Module package, real time clocks is embedded as a dependency.Tray is the package format.In this electrical RTC, the supply voltage is 2.97V~3.63V.Clock/Calendar is the type of electrical real time clock that is being used.As you can see from the diagram, this electronic component is mounted in the way of Surface Mount.There should be -40°C~85°C operating temperature.When operating, electronic time clocks are possible to ensure that Alarm, Leap Year, NVSRAM, Watchdog Timer, Y2K are maintained.When a transmission line is terminated with 34 terminations, it means that the RTC module that terminates the line matches its characteristic impedance.It should be noted that this RTC real time clock is being supplied with 3.3V voltage at the moment.A total of 34 pins are equipped with the RTCs.The family in which RTCs belongs are DS1557.A voltage of 3V is supplied to this electrical digital time clock.RTC times embed a memory of 512KB for storing programs and data.The frequency of real time clocks' output should not exceed 0.032MHz.Mounting type Surface Mount is chosen for the RTC module.There are 34 pins on it.Optimal efficiency can be achieved by maintaining the supply voltage at 3.3V.
DS1557WP-120IND+ Features
34-PowerCap™ Module package
34 terminations
34 pin count
Be maintained at 3.3V for high efficiency.

DS1557WP-120IND+ Applications
There are a lot of Maxim Integrated
DS1557WP-120IND+ Real Time Clocks applications.

Digital video camera
Printers
Copy machines
Mobile equipment
Battery powered devices
Printers and copiers
Electronic metering
Digital cameras
White goods
Elapsed time counter

Factory Lead Time	10 Weeks
Mount	Surface Mount
Mounting Type	Surface Mount
Package / Case	34-PowerCap™ Module
Number of Pins	34
Operating Temperature	-40°C~85°C
Packaging	Tray
Published	2003
JESD-609 Code	e3
Feature	Alarm, Leap Year, NVSRAM, Watchdog Timer, Y2K
Pbfree Code	yes
Part Status	Active
Moisture Sensitivity Level (MSL)	3 (168 Hours)
Number of Terminations	34
ECCN Code	EAR99
Type	Clock/Calendar
Terminal Finish	Matte Tin (Sn)
HTS Code	8473.30.11.80
Voltage - Supply	2.97V~3.63V
Terminal Position	DUAL
Supply Voltage	3.3V
Base Part Number	DS1557
Pin Count	34
Operating Supply Voltage	3.3V
Interface	Parallel
Memory Size	512KB
Clock Frequency	0.032MHz
Logic Function	Clock
External Data Bus Width	8
Time Format	HH:MM:SS (24 hr)
Date Format	YY-MM-DD-dd
Current - Timekeeping (Max)	4mA @ 3.3V
Time-Min	SECONDS
Interrupt Capability	Y
Voltage - Supply, Battery	3V
Volatile	NO
Radiation Hardening	No
RoHS Status	ROHS3 Compliant
Lead Free	Lead Free