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 alarmHow 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. 111-3741
FabrikantnummerMCP7940MT-I/SN
FabrikantMicrochip
€ 0,453
Each (On a Reel of 3300)
Aantal stuks
Calendar, Clock DM:M:DW:Y HH:MM:SS - Serial-2 Wire, Serial-I2C Surface Mount SOIC 8 4.9 x 3.9 x 1.5mm 4.9mm 3.9mm 1.5mm 5.5 V +85 °C
RS-stocknr. 761-7627
FabrikantnummerMCP7940M-I/SN
FabrikantMicrochip
€ 0,522
Each (In a Pack of 5)
Aantal stuks
Calendar, NV SRAM DW:DM:M:Y HH:MM:SS 64B Serial-I2C Surface Mount SOIC 8 4.9 x 3.9 x 1.25mm 4.9mm 3.9mm 1.25mm 5.5 V +85 °C
RS-stocknr. 912-6943
FabrikantnummerMCP7940M-I/SN
FabrikantMicrochip
€ 0,479
Each (In a Tube of 100)
Aantal stuks
Calendar, NV SRAM DW:DM:M:Y HH:MM:SS 64B Serial-I2C Surface Mount SOIC 8 4.9 x 3.9 x 1.25mm 4.9mm 3.9mm 1.25mm 5.5 V +85 °C
RS-stocknr. 823-7954
FabrikantnummerMCP79511-I/MS
FabrikantMicrochip
€ 1,078
Each (In a Pack of 5)
Aantal stuks
Calendar D:W:M:Y, LY HH, HS, MM, SS 64B Serial-SPI Surface Mount MSOP 10 3 x 3 x 0.95mm 3mm 3mm 0.95mm 3.6 V +85 °C
RS-stocknr. 803-2222
FabrikantnummerMCP79520-I/MS
FabrikantMicrochip
€ 1,078
Each (In a Pack of 5)
Aantal stuks
Calendar DW:M:Y:LY HH:MM:SS:HSS 64B Serial Surface Mount MSOP 10 3 x 3 x 0.95mm 3mm 3mm 0.95mm 3.6 V +85 °C
RS-stocknr. 817-3654
FabrikantnummerMCP79410T-I/MS
FabrikantMicrochip
€ 0,77
Each (On a Reel of 2500)
Aantal stuks
Alarm, Battery Backup, Calendar, Clock DW:D:M:Y HH:MM:SS 64B Serial-2 Wire, Serial-I2C Surface Mount MSOP 8 3 x 3 x 0.95mm 3mm 3mm 0.95mm 5.5 V +85 °C
RS-stocknr. 146-0203
FabrikantnummerMCP7940M-I/P
FabrikantMicrochip
€ 0,53
Each (In a Tube of 60)
Aantal stuks
Alarm, Calendar DW:DM:M:Y HH:MM:SS 64B Serial-I2C Through Hole PDIP 8 10.16 x 7.11 x 4.95mm 10.16mm 7.11mm 4.95mm 5.5 V +85 °C
RS-stocknr. 165-2125
FabrikantnummerMCP7940N-I/P
FabrikantMicrochip
€ 0,665
Each (In a Tube of 60)
Aantal stuks
Calendar DW:DM:M:Y HH:MM:SS 64B Serial-I2C Through Hole PDIP 8 10.16 x 7.11 x 4.95mm 10.16mm 7.11mm 4.95mm 5.5 V +85 °C
RS-stocknr. 774-7403
FabrikantnummerMCP7940M-I/P
FabrikantMicrochip
€ 0,574
Each (In a Bag of 10)
Aantal stuks
Alarm, Calendar DW:DM:M:Y HH:MM:SS 64B Serial-I2C Through Hole PDIP 8 10.16 x 7.11 x 4.95mm 10.16mm 7.11mm 4.95mm 5.5 V +85 °C
RS-stocknr. 165-2097
FabrikantnummerMCP79511-I/MS
FabrikantMicrochip
€ 0,98
Each (In a Tube of 100)
Aantal stuks
Calendar D:W:M:Y, LY HH, HS, MM, SS 64B Serial-SPI Surface Mount MSOP 10 3 x 3 x 0.95mm 3mm 3mm 0.95mm 3.6 V +85 °C
RS-stocknr. 810-3933
FabrikantnummerMCP7940N-I/P
FabrikantMicrochip
€ 0,718
Each (In a Pack of 10)
Aantal stuks
Calendar DW:DM:M:Y HH:MM:SS 64B Serial-I2C Through Hole PDIP 8 10.16 x 7.11 x 4.95mm 10.16mm 7.11mm 4.95mm 5.5 V +85 °C
RS-stocknr. 165-1998
FabrikantnummerMCP7940N-I/MS
FabrikantMicrochip
€ 0,643
Each (In a Tube of 100)
Aantal stuks
Battery Backup, Calendar DW:DM:M:Y HH:MM:SS 64B Serial-I2C Surface Mount MSOP 8 3 x 3 x 0.95mm 3mm 3mm 0.95mm 5.5 V +85 °C
RS-stocknr. 723-4749
FabrikantnummerMCP79410-I/MS
FabrikantMicrochip
€ 0,845
Each (In a Pack of 2)
Aantal stuks
Battery Backup, Calendar, NV SRAM DW:DM:M:Y HH:MM:SS 64B Serial-I2C Surface Mount MSOP 8 3 x 3 x 0.95mm 3mm 3mm 0.95mm 5.5 V +85 °C
RS-stocknr. 159-7452
FabrikantnummerMCP79520-I/MS
FabrikantMicrochip
€ 0,98
Each (In a Tube of 100)
Aantal stuks
Calendar DW:M:Y:LY HH:MM:SS:HSS 64B Serial Surface Mount MSOP 10 3 x 3 x 0.95mm 3mm 3mm 0.95mm 3.6 V +85 °C
RS-stocknr. 798-5254
FabrikantnummerMCP7940N-I/MS
FabrikantMicrochip
€ 0,701
Each (In a Pack of 10)
Aantal stuks
Battery Backup, Calendar DW:DM:M:Y HH:MM:SS 64B Serial-I2C Surface Mount MSOP 8 3 x 3 x 0.95mm 3mm 3mm 0.95mm 5.5 V +85 °C
RS-stocknr. 803-2226
FabrikantnummerMCP79522-I/MS
FabrikantMicrochip
€ 1,13
Each (In a Pack of 5)
Aantal stuks
Calendar DW:M:Y:LY HH:MM:SS:HSS 64B Serial Surface Mount MSOP 10 3 x 3 x 0.95mm 3mm 3mm 0.95mm 3.6 V +85 °C
RS-stocknr. 817-3651
FabrikantnummerMCP79410T-I/MNY
FabrikantMicrochip
€ 0,805
Each (On a Reel of 3300)
Aantal stuks
Alarm, Battery Backup, Calendar, Clock DW:D:M:Y HH:MM:SS 64B Serial-2 Wire, Serial-I2C Surface Mount TDFN 8 2 x 3 x 0.75mm 2mm 3mm 0.75mm 5.5 V +85 °C
RS-stocknr. 177-0905
FabrikantnummerMCP795W10-I/SL
FabrikantMicrochip
€ 1,368
Each (In a Pack of 5)
Aantal stuks
- - HH:MM:SS - Serial-SPI Surface Mount SOIC 14 8.65 x 3.9 x 1.5mm 8.65mm 3.9mm 1.5mm 3.6 V +85 °C
RS-stocknr. 798-5260
FabrikantnummerMCP79412-I/SN
FabrikantMicrochip
€ 0,882
Each (In a Pack of 5)
Aantal stuks
Battery Backup, Calendar DW:DM:M:Y HH:MM:SS 64B Serial-I2C Surface Mount SOIC 8 4.9 x 3.9 x 1.5mm 4.9mm 3.9mm 1.5mm 5.5 V +85 °C
RS-stocknr. 912-2774
FabrikantnummerMCP7940N-I/SN
FabrikantMicrochip
€ 0,607
Each (In a Tube of 100)
Aantal stuks
Battery Backup, Calendar DW:DM:M:Y HH:MM:SS 64B Serial-I2C Surface Mount SOIC 8 4.9 x 3.9 x 1.5mm 4.9mm 3.9mm 1.5mm 5.5 V +85 °C