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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Beskrivning Pris 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-artikelnummer 912-2774
Tillv. art.nrMCP7940N-I/SN
VarumärkeMicrochip
6,103 kr
Each (In a Tube of 100)
Enheter
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-artikelnummer 798-5258
Tillv. art.nrMCP7940N-I/SN
VarumärkeMicrochip
6,494 kr
Each (In a Pack of 10)
Enheter
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-artikelnummer 774-7403
Tillv. art.nrMCP7940M-I/P
VarumärkeMicrochip
5,677 kr
Each (In a Bag of 10)
Enheter
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-artikelnummer 146-0203
Tillv. art.nrMCP7940M-I/P
VarumärkeMicrochip
5,499 kr
Each (In a Tube of 60)
Enheter
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-artikelnummer 817-3654
Tillv. art.nrMCP79410T-I/MS
VarumärkeMicrochip
7,628 kr
Each (On a Reel of 2500)
Enheter
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-artikelnummer 723-4749
Tillv. art.nrMCP79410-I/MS
VarumärkeMicrochip
9,05 kr
Each (In a Pack of 2)
Enheter
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-artikelnummer 159-7453
Tillv. art.nrMCP795W21-I/ST
VarumärkeMicrochip
13,238 kr
Each (In a Tube of 96)
Enheter
Calendar DW:M:Y:LY HH:MM:SS:HSS 64B Serial Surface Mount SOIC 14 8.65 x 3.9 x 1.25mm 8.65mm 3.9mm 1.25mm 3.6 V +85 °C
RS-artikelnummer 825-1076
Tillv. art.nrMCP79510-I/MS
VarumärkeMicrochip
10,712 kr
Each (In a Pack of 5)
Enheter
Calendar DW:M:Y:LY HH:MM:SS:HSS 64B Serial-SPI Surface Mount MSOP 10 3 x 3 x 0.95mm 3mm 3mm 0.95mm 3.6 V +85 °C
RS-artikelnummer 165-2099
Tillv. art.nrMCP79510-I/MS
VarumärkeMicrochip
9,153 kr
Each (In a Tube of 100)
Enheter
Calendar DW:M:Y:LY HH:MM:SS:HSS 64B Serial-SPI Surface Mount MSOP 10 3 x 3 x 0.95mm 3mm 3mm 0.95mm 3.6 V +85 °C
RS-artikelnummer 177-0307
Tillv. art.nrMCP79412-I/MS
VarumärkeMicrochip
8,332 kr
Each (In a Tube of 100)
Enheter
- - HH:MM:SS - Serial-I2C Surface Mount MSOP 8 3 x 3 x 0.95mm 3mm 3mm 0.95mm 5.5 V +85 °C
RS-artikelnummer 798-5267
Tillv. art.nrMCP79411-I/SN
VarumärkeMicrochip
8,655 kr
Each (In a Pack of 10)
Enheter
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-artikelnummer 803-2187
Tillv. art.nrMCP79521-I/MS
VarumärkeMicrochip
12,264 kr
Each (In a Pack of 5)
Enheter
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-artikelnummer 817-3667
Tillv. art.nrMCP79410T-I/ST
VarumärkeMicrochip
7,628 kr
Each (On a Reel of 2500)
Enheter
Alarm, Battery Backup, Calendar, Clock DW:D:M:Y HH:MM:SS 64B Serial-2 Wire, Serial-I2C Surface Mount TSSOP 8 3.1 x 4.5 x 1.05mm 3.1mm 4.5mm 1.05mm 5.5 V +85 °C
RS-artikelnummer 165-2125
Tillv. art.nrMCP7940N-I/P
VarumärkeMicrochip
6,904 kr
Each (In a Tube of 60)
Enheter
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-artikelnummer 177-0308
Tillv. art.nrMCP795W10-I/SL
VarumärkeMicrochip
13,106 kr
Each (In a Tube of 57)
Enheter
- - 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-artikelnummer 145-9048
Tillv. art.nrMCP7940N-I/ST
VarumärkeMicrochip
6,065 kr
Each (In a Tube of 100)
Enheter
Calendar DW:D:M:Y HH:MM:SS 64B Serial-I2C Surface Mount TSSOP 8 4.5 x 3.1 x 1.05mm 4.5mm 3.1mm 1.05mm 5.5 V +85 °C
RS-artikelnummer 177-0302
Tillv. art.nrMCP79400-I/MS
VarumärkeMicrochip
6,924 kr
Each (In a Tube of 100)
Enheter
- D:M:Y, DW HH:MM:SS - Serial-I2C Surface Mount MSOP 8 3 x 3 x 0.95mm 3mm 3mm 0.95mm 5.5 V +85 °C
RS-artikelnummer 798-5260
Tillv. art.nrMCP79412-I/SN
VarumärkeMicrochip
9,368 kr
Each (In a Pack of 5)
Enheter
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-artikelnummer 889-6026
Tillv. art.nrMCP7940NT-I/MNY
VarumärkeMicrochip
6,286 kr
Each (On a Reel of 3300)
Enheter
Calendar, Clock DW:DM:M:Y HH:MM:SS 64B Serial-2 Wire, Serial-I2C Surface Mount TDFN 8 3 x 2 x 0.75mm 3mm 2mm 0.75mm 5.5 V +85 °C
RS-artikelnummer 803-2204
Tillv. art.nrMCP795W22-I/SL
VarumärkeMicrochip
11,392 kr
Each (In a Pack of 5)
Enheter
Calendar DW:M:Y:LY HH:MM:SS:HSS 64B Serial Surface Mount SOIC 14 8.65 x 3.9 x 1.25mm 8.65mm 3.9mm 1.25mm 3.6 V +85 °C