Real Time Clocks

What is a Real Time Clock?
A Real Time Clock (RTC) is a computer clock which is usually in the form of an integrated circuit. They have been designed to keep track of time, in real time - hence the product name. A Real Time Clock is usually an integral part of the computer motherboard. More often than not, a RTC will also include a calendar and an alarm

How do Real Time Clocks work?
The memory on the clocks system stores system descriptions and set up values such as "Current Time Value". The information that is held in the RTC is read with a microprocessor, commonly over a serial interface which facilitate the performance of the software functions that are time dependant. They are designed to run on an ultra-low power consumption, often run on a lithium battery source or normal power. This power source allows them to continue running and generating real time when a system is down. The newer models of RTC use super-capacitors as a source of power that can be recharged and soldered to the board.
Some Real Time Clocks feature synchronisation to an external signal, such as a compensated power line frequency. It allows the device to provide an accurate result without having an on-board temperature compensation scheme.

RTC Time Values
• Year
• Month
• Date
• Hours
• Minutes
• Seconds

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Omschrijving Prijs Functions Date Format Time Format User RAM Bus Type Mounting Type Package Type Pin Count Dimensions Length Width Height Maximum Operating Supply Voltage Maximum Operating Temperature
RS-stocknr. 171-1639
FabrikantnummerRV-3029-C2-TA-006
FabrikantMicro Crystal
7,109 €
Each (On a Tape of 100)
Aantal stuks
Battery Backup, Calendar, RAM DW:DM:M:Y HH:MM:SS 8B Serial-I2C Surface Mount SON 10 5 x 3.2 x 1.2mm 5mm 3.2mm 1.2mm 5.5 V +85 °C
RS-stocknr. 729-3215
FabrikantnummerRV-3029-C2-TA-006
FabrikantMicro Crystal
11,54 €
Each
Aantal stuks
Battery Backup, Calendar, RAM DW:DM:M:Y HH:MM:SS 8B Serial-I2C Surface Mount SON 10 5 x 3.2 x 1.2mm 5mm 3.2mm 1.2mm 5.5 V +85 °C
RS-stocknr. 171-1648
FabrikantnummerRV-8523-C3-TA-020
FabrikantMicro Crystal
2,568 €
Each (On a Tape of 100)
Aantal stuks
Alarm, Interrupt, Timer - - - Serial-I2C Surface Mount SON 10 - 3.7mm 3.7mm 2.5mm 5.5 V +85 °C
RS-stocknr. 729-3303
FabrikantnummerRV-8523-C3-TA-020
FabrikantMicro Crystal
2,64 €
Each
Aantal stuks
Alarm, Interrupt, Timer - - - Serial-I2C Surface Mount SON 10 - 3.7mm 3.7mm 2.5mm 5.5 V +85 °C
RS-stocknr. 171-1655
FabrikantnummerRV-3049-C3-TA-QC-OPT.A
FabrikantMicro Crystal
3,157 €
Each (On a Tape of 100)
Aantal stuks
Alarm, Battery Backup, Calendar, Clock D:W:M:Y HH:MM:SS 8B Serial-4 Wire, Serial-SPI Surface Mount SON 10 3.7 x 2.5 x 0.9mm 3.7mm 2.5mm 0.9mm 5.5 V +85 °C
RS-stocknr. 171-1645
FabrikantnummerRV-8564-C3-TA-020
FabrikantMicro Crystal
2,242 €
Each (On a Tape of 100)
Aantal stuks
Alarm, Interrupt, Timer - - - Serial-I2C Surface Mount SON 10 - 3.7mm 3.7mm 2.5mm 5.5 V +85 °C
RS-stocknr. 729-3237
FabrikantnummerRV-4162-C7-TA-020
FabrikantMicro Crystal
4,53 €
Each
Aantal stuks
Calendar DW:DM:M:Y HH:MM:SS - Serial-I2C Surface Mount SMD 8 3.2 x 1.5 x 0.8mm 3.2mm 1.5mm 0.8mm 4.4 V +85 °C
RS-stocknr. 729-3234
FabrikantnummerRV-8564-C3-TA-020
FabrikantMicro Crystal
2,28 €
Each
Aantal stuks
Alarm, Interrupt, Timer - - - Serial-I2C Surface Mount SON 10 - 3.7mm 3.7mm 2.5mm 5.5 V +85 °C
RS-stocknr. 171-1643
FabrikantnummerRV-8564-C2-TA-010
FabrikantMicro Crystal
4,109 €
Each (On a Tape of 100)
Aantal stuks
Calendar DW:DM:M:Y HH:MM:SS - Serial-I2C Surface Mount SON 10 5 x 3.2 x 1.2mm 5mm 3.2mm 1.2mm 5.5 V +85 °C
RS-stocknr. 171-1640
FabrikantnummerRV-3049-C2-TB-008
FabrikantMicro Crystal
9,78 €
Each (On a Tape of 100)
Aantal stuks
Battery Backup, Calendar, NV RAM DW:DM:M:Y HH:MM:SS 8B Serial-SPI Surface Mount SON 10 5 x 3.2 x 1.2mm 5mm 3.2mm 1.2mm 5.5 V +125 °C
RS-stocknr. 171-1649
FabrikantnummerRV-8564-C2-TA-020
FabrikantMicro Crystal
2,482 €
Each (On a Tape of 100)
Aantal stuks
Calendar DW:DM:M:Y HH:MM:SS - Serial-I2C Surface Mount SON 10 5 x 3.2 x 1.2mm 5mm 3.2mm 1.2mm 5.5 V +85 °C
RS-stocknr. 690-2848
FabrikantnummerRV-3049-C2-STD-025
FabrikantMicro Crystal
5,19 €
Each
Aantal stuks
Alarm, Calendar, Timer DW:DM:M:Y HH:MM:SS 8B Serial-SPI Surface Mount SON 10 5 x 3.2 x 1.2mm 5mm 3.2mm 1.2mm 5.5 V +85 °C
RS-stocknr. 171-1646
FabrikantnummerRV-4162-C7-TA-020
FabrikantMicro Crystal
3,38 €
Each (On a Tape of 100)
Aantal stuks
Calendar DW:DM:M:Y HH:MM:SS - Serial-I2C Surface Mount SMD 8 3.2 x 1.5 x 0.8mm 3.2mm 1.5mm 0.8mm 4.4 V +85 °C
RS-stocknr. 729-3375
FabrikantnummerRV-8564-C2-TA-020
FabrikantMicro Crystal
2,55 €
Each
Aantal stuks
Calendar DW:DM:M:Y HH:MM:SS - Serial-I2C Surface Mount SON 10 5 x 3.2 x 1.2mm 5mm 3.2mm 1.2mm 5.5 V +85 °C
RS-stocknr. 813-5763
FabrikantnummerRV-3029-C3-TA-QC-Opt.B
FabrikantMicro Crystal
4,85 €
Each
Aantal stuks
Alarm, Battery Backup, Calendar, Clock D:W:M:Y HH:MM:SS 8B Serial-2 Wire, Serial-I2C Surface Mount SON 10 3.7 x 2.5 x 0.9mm 3.7mm 2.5mm 0.9mm 5.5 V +85 °C
RS-stocknr. 729-3224
FabrikantnummerRV-3029-C2-TB-030
FabrikantMicro Crystal
6,55 €
Each
Aantal stuks
Battery Backup, Calendar, NV RAM DW:DM:M:Y HH:MM:SS 8B Serial-I2C Surface Mount SON 10 5 x 3.2 x 1.2mm 5mm 3.2mm 1.2mm 5.5 V +85 °C
RS-stocknr. 171-1641
FabrikantnummerRV-3029-C2-TB-030
FabrikantMicro Crystal
4,038 €
Each (On a Tape of 100)
Aantal stuks
Battery Backup, Calendar, NV RAM DW:DM:M:Y HH:MM:SS 8B Serial-I2C Surface Mount SON 10 5 x 3.2 x 1.2mm 5mm 3.2mm 1.2mm 5.5 V +85 °C
RS-stocknr. 690-2851
FabrikantnummerRV-2123-C2-STD-020
FabrikantMicro Crystal
6,79 €
Each
Aantal stuks
Alarm, Calendar, Timer DW:DM:M:Y HH:MM:SS - Serial-SPI Surface Mount SON 10 5 x 3.2 x 1.2mm 5mm 3.2mm 1.2mm 5.5 V +85 °C
RS-stocknr. 171-1656
FabrikantnummerRV-3049-C3-TB-QA-OPT.A
FabrikantMicro Crystal
6,855 €
Each (On a Tape of 100)
Aantal stuks
Alarm, Battery Backup, Calendar, Clock D:W:M:Y HH:MM:SS 8B Serial-4 Wire, Serial-SPI Surface Mount SON 10 3.7 x 2.5 x 0.9mm 3.7mm 2.5mm 0.9mm 5.5 V +85 °C
RS-stocknr. 171-1647
FabrikantnummerRV-2123-C2-TA-010
FabrikantMicro Crystal
5,64 €
Each (On a Tape of 100)
Aantal stuks
Calendar DW:DM:M:Y HH:MM:SS - Serial-SPI Surface Mount SON 10 5 x 3.2 x 1.2mm 5mm 3.2mm 1.2mm 5.5 V +85 °C