Specification	PCF2129AT/2,518

Current - Timekeeping (Max)	1.5 µA
Date Format	YY-MM-DD-dd
Features	TCXO/Crystal, Square Wave Output, Watchdog Timer, Alarm, Leap Year
Interface	I2C, 2-Wire Serial
Mounting Type	Surface Mount
Operating Temperature (Max)	85 °C
Operating Temperature (Min)	-40 °C
Package Length	0.295 in
Package Name	20-SO, 20-SOIC
Package Width	7.5 mm
Time Format	HH:MM:SS (12/24 hr)
Type	Clock/Calendar
Voltage - Supply (Maximum)	4.2 V
Voltage - Supply (Minimum)	1.8 V
Voltage - Supply, Battery (Maximum)	4.2 V
Voltage - Supply, Battery (Minimum)	1.8 V

PCF2129 Series

Part	Type	Date Format	Voltage - Supply (Minimum)	Voltage - Supply (Maximum)	Package Name	Time Format	Features	Voltage - Supply, Battery (Maximum)	Voltage - Supply, Battery (Minimum)	Package Length	Package Width	Current - Timekeeping (Max)	Interface	Operating Temperature (Min)	Operating Temperature (Max)	Mounting Type
NXP USA Inc. PCF2129AT/2,518	Clock/Calendar	YY-MM-DD-dd	1.8 V	4.2 V	20-SO 20-SOIC	HH:MM:SS (12/24 hr)	Alarm Leap Year Square Wave Output TCXO/Crystal Watchdog Timer	4.2 V	1.8 V	0.295 in	7.5 mm	1.5 µA	2-Wire Serial I2C	-40 °C	85 °C	Surface Mount
NXP USA Inc. PCF2129T/2,518	Clock/Calendar	YY-MM-DD-dd	1.8 V	4.2 V	16-SO 16-SOIC	HH:MM:SS (12/24 hr)	Alarm Leap Year Square Wave Output TCXO/Crystal Watchdog Timer	4.2 V	1.8 V	0.295 in	7.5 mm	1.5 µA	2-Wire Serial I2C	-40 °C	85 °C	Surface Mount

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