PCF8583BS,518 Overview
A package named 20-VQFN Exposed Pad contains real time clocks.Tape & Reel (TR) is the packaging method.There is 2.5V~6V supply voltage for this electrical RTC.Electrical real time clocks of this type are Clock/Calendar.real time clock (RTC)s like this are mounted in the way of Surface Mount.-40°C~85°C is the operating temperature.When operating, you can ensure Alarm, NVSRAM, Square Wave Output.A transmission line can have a 20 termination by terminating it with a RTC module whose characteristic impedance matches the line's.In the case of this RTC real time clock, there is 5V voltage supplied to it.The RTCs are equipped with 20 pins.PCF8583 is the family name of this object.Programs and data can be stored in the 240B memory embedded in the RTC times.There should not be a frequency higher than 0.1MHz in the output.There is a power supply of 3/5V used to power the real time clock.There are also TIMEKEEPING CURRENT = 10UA; AUTO WORD INCREMENTING characteristics.
PCF8583BS,518 Features
20-VQFN Exposed Pad package
20 terminations
20 pin count
3/5V power supplies

PCF8583BS,518 Applications
There are a lot of NXP USA Inc.
PCF8583BS,518 Real Time Clocks applications.

Industrial
Digital still camera
Digital video camera
Printers
Copy machines
Mobile equipment
Battery powered devices
Printers and copiers
Electronic metering
Digital cameras

Mounting Type	Surface Mount
Package / Case	20-VQFN Exposed Pad
Surface Mount	YES
Operating Temperature	-40°C~85°C
Packaging	Tape & Reel (TR)
Published	1997
JESD-609 Code	e4
Feature	Alarm, NVSRAM, Square Wave Output
Part Status	Obsolete
Moisture Sensitivity Level (MSL)	3 (168 Hours)
Number of Terminations	20
Type	Clock/Calendar
Terminal Finish	NICKEL PALLADIUM GOLD
Additional Feature	TIMEKEEPING CURRENT = 10UA; AUTO WORD INCREMENTING
HTS Code	8542.39.00.01
Voltage - Supply	2.5V~6V
Terminal Position	QUAD
Peak Reflow Temperature (Cel)	260
Supply Voltage	5V
Terminal Pitch	0.65mm
Reach Compliance Code	unknown
Time@Peak Reflow Temperature-Max (s)	30
Base Part Number	PCF8583
Pin Count	20
JESD-30 Code	S-PQCC-N20
Qualification Status	Not Qualified
Power Supplies	3/5V
Interface	I2C, 2-Wire Serial
Memory Size	240B
Clock Frequency	0.1MHz
External Data Bus Width	1
Time Format	HH:MM:SS:hh (12/24 hr)
Date Format	YY-MM-DD
Current - Timekeeping (Max)	10μA~50μA @ 1V~5V
Time-Min	1/100SECOND
Interrupt Capability	Y
Volatile	YES
Information Access Method	I2C
Length	5mm
Height Seated (Max)	1mm
Width	5mm
RoHS Status	ROHS3 Compliant