Real Time Clocks

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Mfr Part #	Quantity Available	Price	Series	Package	Product Status	DigiKey Programmable	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

M48T58Y-70MH1F IC RTC CLK/CALENDAR PAR 28SOH STMicroelectronics	458 In Stock	1 : ¥124.06000 Cut Tape (CT) 936 : ¥85.65404 Tape & Reel (TR)	Timekeeper®	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Not Verified	Clock/Calendar	Leap Year	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	-	3mA @ 4.5V ~ 5.5V	0°C ~ 70°C	Surface Mount	28-SOIC (0.337", 8.56mm Width) with SNAPHAT Sockets	28-SOH
M48T08Y-10MH1F IC RTC CLK/CALENDAR PAR 28SOH STMicroelectronics	2,258 In Stock	1 : ¥180.65000 Cut Tape (CT) 936 : ¥129.18100 Tape & Reel (TR)	Timekeeper®	Tape & Reel (TR) Cut Tape (CT)	Active	Not Verified	Clock/Calendar	Leap Year, Watchdog Timer	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	-	3mA @ 4.5V ~ 5.5V	0°C ~ 70°C	Surface Mount	28-SOP (0.350", 8.89mm Width) with SNAPHAT Sockets	28-SOH
M48T35Y-70MH1F IC RTC CLK/CALENDAR PAR 28SOH STMicroelectronics	660 In Stock	1 : ¥181.05000 Cut Tape (CT) 936 : ¥129.44053 Tape & Reel (TR)	Timekeeper®	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Not Verified	Clock/Calendar	Leap Year	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	-	2mA @ 4.75V ~ 5.5V	0°C ~ 70°C	Surface Mount	28-SOP (0.350", 8.89mm Width) with SNAPHAT Sockets	28-SOH
M48T37V-10MH1F IC RTC CLK/CALENDAR PAR 44SOH STMicroelectronics	763 In Stock	1 : ¥185.04000 Cut Tape (CT) 936 : ¥132.31533 Tape & Reel (TR)	Timekeeper®	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Watchdog Timer	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	3V ~ 3.6V	-	2mA @ 3V ~ 3.6V	0°C ~ 70°C	Surface Mount	44-BSOP (0.337", 8.56mm Width) requires SNAPHAT	44-SOH
M48T35AV-10MH1F IC RTC CLK/CALENDAR PAR 28SOH STMicroelectronics	650 In Stock	1 : ¥188.21000 Cut Tape (CT) 936 : ¥134.54531 Tape & Reel (TR)	Timekeeper®	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Not Verified	Clock/Calendar	Leap Year	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	3V ~ 3.6V	-	2mA @ 3V ~ 3.6V	0°C ~ 70°C	Surface Mount	28-SOP (0.350", 8.89mm Width) with SNAPHAT Sockets	28-SOH
M48T02-150PC1 IC RTC CLK/CALENDAR PAR 24DIP STMicroelectronics	136 In Stock	1 : ¥189.83000 Tube	Timekeeper®	Tube	Active	Not Verified	Clock/Calendar	Leap Year	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	4.75V ~ 5.5V	-	3mA @ 4.7V ~ 5.5V	0°C ~ 70°C	Through Hole	24-DIP Module (0.600", 15.24mm)	24-PCDIP, CAPHAT®
M48T201V-85MH1F IC RTC CLK/CALENDAR PAR 44SOH STMicroelectronics	931 In Stock	1 : ¥131.30000 Cut Tape (CT) 936 : ¥90.67014 Tape & Reel (TR)	Timekeeper®	Tape & Reel (TR) Cut Tape (CT)	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, Supervisor, Watchdog Timer, Y2K	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	3V ~ 3.6V	3V	2mA @ 3V ~ 3.6V	0°C ~ 70°C	Surface Mount	44-BSOP (0.337", 8.56mm Width) requires SNAPHAT	44-SOH
M48T201Y-70MH1F IC RTC CLK/CALENDAR PAR 44SOH STMicroelectronics	3,616 In Stock	1 : ¥133.49000 Cut Tape (CT) 936 : ¥92.18223 Tape & Reel (TR)	Timekeeper®	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, Supervisor, Watchdog Timer, Y2K	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	3V	3mA @ 4.5V ~ 5.5V	0°C ~ 70°C	Surface Mount	44-BSOP (0.337", 8.56mm Width) requires SNAPHAT	44-SOH
M48T02-70PC1 IC RTC CLK/CALENDAR PAR 24DIP STMicroelectronics	1,187 In Stock	1 : ¥166.17000 Tube	Timekeeper®	Tube	Active	Not Verified	Clock/Calendar	Leap Year	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	4.75V ~ 5.5V	-	3mA @ 4.7V ~ 5.5V	0°C ~ 70°C	Through Hole	24-DIP Module (0.600", 15.24mm)	24-PCDIP, CAPHAT®
M48T58-70PC1 IC RTC CLK/CALENDAR PAR 28DIP STMicroelectronics	141 In Stock	1 : ¥210.97000 Tube	Timekeeper®	Tube	Active	Not Verified	Clock/Calendar	Leap Year	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	4.75V ~ 5.5V	-	3mA @ 4.75V ~ 5.5V	0°C ~ 70°C	Through Hole	28-DIP Module (0.600", 15.24mm)	28-PCDIP, CAPHAT®
M48T37Y-70MH1F IC RTC CLK/CALENDAR PAR 44SOH STMicroelectronics	271 In Stock	1 : ¥163.08000 Cut Tape (CT) 936 : ¥116.58739 Tape & Reel (TR)	Timekeeper®	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Watchdog Timer	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	-	3mA @ 4.5V ~ 5.5V	0°C ~ 70°C	Surface Mount	44-BSOP (0.337", 8.56mm Width) requires SNAPHAT	44-SOH
M48T35AV-10PC1 IC RTC CLK/CALENDAR PAR 28DIP STMicroelectronics	240 In Stock	1 : ¥244.71000 Tube	Timekeeper®	Tube	Active	Not Verified	Clock/Calendar	Leap Year	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	3V ~ 3.6V	-	2mA @ 3V ~ 3.6V	0°C ~ 70°C	Through Hole	28-DIP Module (0.600", 15.24mm)	28-PCDIP, CAPHAT®
M48T12-70PC1 IC RTC CLK/CALENDAR PAR 24DIP STMicroelectronics	0 In Stock Check Lead Time	1 : ¥162.43000 Tube	Timekeeper®	Tube	Active	Not Verified	Clock/Calendar	Leap Year	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	-	3mA @ 4.5V ~ 5.5V	0°C ~ 70°C	Through Hole	24-DIP Module (0.600", 15.24mm)	24-PCDIP, CAPHAT®
M48T12-150PC1 IC RTC CLK/CALENDAR PAR 24DIP STMicroelectronics	0 In Stock Check Lead Time	1 : ¥201.13000 Tube	Timekeeper®	Tube	Active	Not Verified	Clock/Calendar	Leap Year	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	-	3mA @ 4.5V ~ 5.5V	0°C ~ 70°C	Through Hole	24-DIP Module (0.600", 15.24mm)	24-PCDIP, CAPHAT®
M48T08-100PC1 IC RTC CLK/CALENDAR PAR 28DIP STMicroelectronics	0 In Stock Check Lead Time	1 : ¥205.52000 Tube	Timekeeper®	Tube	Active	Not Verified	Clock/Calendar	Leap Year, Watchdog Timer	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	4.75V ~ 5.5V	-	3mA @ 4.7V ~ 5.5V	0°C ~ 70°C	Through Hole	28-DIP Module (0.600", 15.24mm)	28-PCDIP, CAPHAT®
M48T35Y-70PC1 IC RTC CLK/CALENDAR PAR 28DIP STMicroelectronics	0 In Stock Check Lead Time	1 : ¥249.26000 Tube	Timekeeper®	Tube	Active	Not Verified	Clock/Calendar	Leap Year	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	-	2mA @ 4.75V ~ 5.5V	0°C ~ 70°C	Through Hole	28-DIP Module (0.600", 15.24mm)	28-PCDIP, CAPHAT®
M48T35-70PC1 IC RTC CLK/CALENDAR PAR 28DIP STMicroelectronics	0 In Stock Check Lead Time	1 : ¥274.22000 Tube	Timekeeper®	Tube	Active	Not Verified	Clock/Calendar	Leap Year	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	4.75V ~ 5.5V	-	2mA @ 4.75V ~ 5.5V	0°C ~ 70°C	Through Hole	28-DIP Module (0.600", 15.24mm)	28-PCDIP, CAPHAT®
M48T18-100PC1 IC RTC CLK/CALENDAR PAR 28DIP STMicroelectronics	0 In Stock Check Lead Time	1 : ¥218.20000 Tube	Timekeeper®	Tube	Active	Not Verified	Clock/Calendar	Leap Year, Watchdog Timer	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	-	3mA @ 4.5V ~ 5.5V	0°C ~ 70°C	Through Hole	28-DIP Module (0.600", 15.24mm)	28-PCDIP, CAPHAT®
M48T58Y-70PC1 IC RTC CLK/CALENDAR PAR 28-DIP STMicroelectronics	0 In Stock Check Lead Time	1 : ¥201.13000 Tube	Timekeeper®	Tube	Active	Not Verified	Clock/Calendar	Leap Year	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	-	3mA @ 4.5V ~ 5.5V	0°C ~ 70°C	Through Hole	28-DIP Module (0.600", 15.24mm)	28-PCDIP, CAPHAT®
M48T18-150PC1 IC RTC CLK/CALENDAR PAR 28DIP STMicroelectronics	0 In Stock Check Lead Time	1 : ¥242.59000 Tube	Timekeeper®	Tube	Active	Not Verified	Clock/Calendar	Leap Year, Watchdog Timer	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	-	3mA @ 4.5V ~ 5.5V	0°C ~ 70°C	Through Hole	28-DIP Module (0.600", 15.24mm)	28-PCDIP, CAPHAT®
M48T08-150PC1 IC RTC CLK/CALENDAR PAR 28DIP STMicroelectronics	0 In Stock Check Lead Time	1 : ¥253.57000 Tube	Timekeeper®	Tube	Active	Not Verified	Clock/Calendar	Leap Year, Watchdog Timer	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	4.75V ~ 5.5V	-	3mA @ 4.7V ~ 5.5V	0°C ~ 70°C	Through Hole	28-DIP Module (0.600", 15.24mm)	28-PCDIP, CAPHAT®
M41T62LC6F IC RTC CLK/CALENDAR I2C 8LCC STMicroelectronics	0 In Stock Check Lead Time	1 : ¥51.24000 Cut Tape (CT) 1,000 : ¥27.06871 Tape & Reel (TR)	Timekeeper®	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, Watchdog Timer	-	HH:MM:SS:hh (24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	1.3V ~ 4.4V	-	0.7µA ~ 0.95µA @ 1.3V ~ 4.4V	-40°C ~ 85°C	Surface Mount	8-LCC	8-LCC (1.5x3.2)
M41T256YMT7F IC RTC CLK/CALENDAR I2C 44SOH STMicroelectronics	0 In Stock	1 : ¥87.96000 Cut Tape (CT) 936 : ¥57.27274 Tape & Reel (TR)	Timekeeper®	Tape & Reel (TR) Cut Tape (CT)	Obsolete	Not Verified	Clock/Calendar	Leap Year, NVSRAM	32KB	HH:MM:SS:hh (24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	4.5V ~ 5.5V	2.5V ~ 3.5V	2.5mA @ 4.5V ~ 5.5V	-25°C ~ 70°C	Surface Mount	44-BSOP (0.337", 8.56mm Width)	44-SOH
M48T35AV-10MH6F IC RTC CLK/CALENDAR PAR 28SOH STMicroelectronics	0 In Stock	1 : ¥149.67000 Cut Tape (CT) 936 : ¥103.32159 Tape & Reel (TR)	Timekeeper®	Tape & Reel (TR) Cut Tape (CT)	Obsolete	Not Verified	Clock/Calendar	Leap Year	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	3V ~ 3.6V	-	2mA @ 3V ~ 3.6V	-40°C ~ 85°C	Surface Mount	28-SOP (0.350", 8.89mm Width) with SNAPHAT Sockets	28-SOH
M41T256YMH7E IC RTC CLK/CALENDAR I2C 44SOH STMicroelectronics	0 In Stock	Obsolete	Timekeeper®	Tube	Obsolete	Not Verified	Clock/Calendar	Leap Year, NVSRAM	32KB	HH:MM:SS:hh (24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	4.5V ~ 5.5V	2.5V ~ 3.5V	2.5mA @ 4.5V ~ 5.5V	-25°C ~ 70°C	Surface Mount	44-BSOP (0.337", 8.56mm Width) requires SNAPHAT	44-SOH

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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.

Real Time Clocks

Real Time Clocks

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