PCF2127AT/1,518 Overview
Real time clocks is embedded in the 20-SOIC (0.295, 7.50mm Width) package.Time clock is packaged in the way of Tape & Reel (TR).The supply voltage of this electrical RTC is 1.8V~4.2V.The type of this electrical real time clock is Clock/Calendar.This real time clock (RTC) is mounted in the way of Surface Mount.The operating temperature should be -40°C~85°C.Alarm, Leap Year, Square Wave Output, SRAM, TCXO/Crystal, Watchdog Timer can be ensured when operating.There are 20 terminations, which are the practice of ending a transmission line welectronic time clocksh a RTC module that matches the characteristic impedance of the line.The supply voltage of this RTC real time clock is 3V.It is equipped with 20 pins.RTCs belongs to PCF2127 family.The supply voltage of this electrical digital time clock is 1.8V~4.2V.The RTC times embed a memory of 512B available for storing programs and data.Real time clocks' output frequency should not exceed 0.032MHz.It operates from 2/4V power supplies.
PCF2127AT/1,518 Features
20-SOIC (0.295, 7.50mm Width) package
20 terminations
20 pin count
2/4V power supplies

PCF2127AT/1,518 Applications
There are a lot of NXP USA Inc.
PCF2127AT/1,518 Real Time Clocks applications.

Mobile telephones
Portable instruments
Electronic metering
Battery powered products
Automotive
Industrial
Digital still camera
Digital video camera
Printers
Copy machines

Mounting Type	Surface Mount
Package / Case	20-SOIC (0.295, 7.50mm Width)
Surface Mount	YES
Operating Temperature	-40°C~85°C
Packaging	Tape & Reel (TR)
Published	2003
Feature	Alarm, Leap Year, Square Wave Output, SRAM, TCXO/Crystal, Watchdog Timer
Part Status	Obsolete
Moisture Sensitivity Level (MSL)	3 (168 Hours)
Number of Terminations	20
Type	Clock/Calendar
HTS Code	8542.39.00.01
Voltage - Supply	1.8V~4.2V
Terminal Position	DUAL
Supply Voltage	3V
Terminal Pitch	1.27mm
Reach Compliance Code	unknown
Base Part Number	PCF2127
Pin Count	20
JESD-30 Code	R-PDSO-G20
Qualification Status	Not Qualified
Power Supplies	2/4V
Interface	I2C, 2-Wire Serial
Memory Size	512B
Clock Frequency	0.032MHz
Time Format	HH:MM:SS (12/24 hr)
Date Format	YY-MM-DD-dd
Current - Timekeeping (Max)	1.5μA @ 3.3V
Time-Min	SECONDS
Interrupt Capability	Y
Voltage - Supply, Battery	1.8V~4.2V
Volatile	YES
Information Access Method	I2C
Length	12.8mm
Height Seated (Max)	2.65mm
Width	7.5mm
RoHS Status	ROHS3 Compliant