Real Time Clocks

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BulkCut Tape (CT)Digi-Reel®Tape & Reel (TR)

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8-SOIC (0.154", 3.90mm Width)8-VDFN Exposed Pad14-TSSOP (0.173", 4.40mm Width)Die

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8-HVSON (4x4)8-SO14-TSSOPDie

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Mfr Part #	Quantity Available	Price	Series	Package	Product Status	Type	Features	Memory Size	Time Format	Date Format	Interface	Voltage - Supply	Voltage - Supply, Battery	Current - Timekeeping (Max)	Operating Temperature	Mounting Type	Package / Case	Supplier Device Package

PCF8523TK/1,118 IC RTC CLK/CALENDAR I2C 8-HVSON NXP USA Inc.	4,127 In Stock	1 : $1.91000 Cut Tape (CT) 6,000 : $1.02389 Tape & Reel (TR)	-	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Clock/Calendar	Alarm, Leap Year, Watchdog Timer	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.6V ~ 5.5V	1.8V ~ 5.5V	0.5µA @ 2V ~ 5V	-40°C ~ 85°C	Surface Mount	8-VDFN Exposed Pad	8-HVSON (4x4)
PCF8523T/1,118 IC RTC CLK/CALENDAR I2C 8-SOIC NXP USA Inc.	0 In Stock	1 : $1.63000 Cut Tape (CT) 2,500 : $0.87150 Tape & Reel (TR)	-	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Clock/Calendar	Alarm, Leap Year, Watchdog Timer	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.6V ~ 5.5V	1.8V ~ 5.5V	0.5µA @ 2V ~ 5V	-40°C ~ 85°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SO
PCF8523TS/1,118 IC RTC CLK/CALENDAR I2C 14-TSSOP NXP USA Inc.	0 In Stock	1 : $1.74000 Cut Tape (CT) 2,500 : $0.93474 Tape & Reel (TR)	-	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Clock/Calendar	Alarm, Leap Year, Watchdog Timer	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.6V ~ 5.5V	1.8V ~ 5.5V	0.5µA @ 2V ~ 5V	-40°C ~ 85°C	Surface Mount	14-TSSOP (0.173", 4.40mm Width)	14-TSSOP
PCF8523AUG/HAV IC RTC CLK/CALENDAR I2C 12WLCSP NXP USA Inc.	0 In Stock	23,730 : $0.65935 Bulk	-	Bulk	Active	Clock/Calendar	Alarm, Leap Year, Watchdog Timer	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.6V ~ 5.5V	1.8V ~ 5.5V	0.5µA @ 2V ~ 5V	-40°C ~ 85°C	Surface Mount	Die	Die
PCF8523U/12AA/1,00 IC RTC/CALENDAR UNCASED DIE FFC NXP USA Inc.	0 In Stock	23,730 : $0.83000 Bulk	*	Bulk	Last Time Buy	-	-	-	-	-	-	-	-	-	-	-	-	-

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Real Time Clocks

Real Time Clocks (RTCs) provide time and/or date information in almost any electronic device which needs to keep accurate time. The clock types are binary counter, clock/calendar/supervisor, elapsed time counter, phantom time chip, portable system controller, temperature recorder, time event recorder, and timer clock peripheral. They contain memory sizes ranging from 2 B to 2 MB and have interface options of I2C, Parallel, Serial, SPI, 1-Wire, 2-Wire, 3-Wire, and 4-Wire.