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

...
Lees meer Lees minder

Filters

421 - 433 van 433 producten worden weergegeven
Resultaten per pagina
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. 196-9062
FabrikantnummerISL12020MIRZ
4,511 €
Each (In a Tube of 53)
Aantal stuks
- DW:DM:M:Y HH:MM:SS 128B - - DFN 20 - - - - - -
RS-stocknr. 191-3286
FabrikantnummerDS1339AU+
FabrikantMaxim Integrated
2,72 €
Each (In a Tube of 50)
Aantal stuks
Real Time Clock D:D:M:Y SS:MM:HH - Serial-I2C Surface Mount μSOP 8 3.1 x 0.65 x 0.95mm 3.1mm 0.65mm 0.95mm 5.5 V +85 °C
RS-stocknr. 169-8345
FabrikantnummerISL12022IBZ
FabrikantIntersil
3,319 €
Each (In a Tube of 98)
Aantal stuks
Alarm, Battery Backup, Calendar, Switch Over DW:DM:M:Y HH:MM:SS 128B Serial-I2C Surface Mount SOIC 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm 5.5 V +85 °C
RS-stocknr. 817-3651
FabrikantnummerMCP79410T-I/MNY
FabrikantMicrochip
0,758 €
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. 189-8692
FabrikantnummerDS1390U-33+
FabrikantMaxim Integrated
3,088 €
Each (In a Pack of 5)
Aantal stuks
Battery Backup, Calendar, NV RAM DW:DM:M:Y HH:MM:SS - Serial-SPI Surface Mount μSOP 10 3.05 x 3.05 x 0.95mm 3.05mm 3.05mm 0.95mm 5.5 V +85 °C
RS-stocknr. 191-4715
FabrikantnummerDS12885S+
FabrikantMaxim Integrated
6,145 €
Each (In a Pack of 2)
Aantal stuks
Alarm, Calendar, Clock - HH:MM:SS 144B Multiplexed Surface Mount SOIC 24 15.6 x 7.6 x 2.35mm 15.6mm 7.6mm 2.35mm 5.5 V +70 °C
Nieuw
RS-stocknr. 205-3457
FabrikantnummerX1B000311000112
FabrikantEpson
1,13 €
Each (In a Pack of 5)
Aantal stuks
Real Time Clock - - - - - 3.2x2.5 ceramic package 10 - - - - - -
RS-stocknr. 189-7238
FabrikantnummerDS1391U-33+
FabrikantMaxim Integrated
2,556 €
Each (In a Tube of 50)
Aantal stuks
Battery Backup, Calendar, NV SRAM DW:DM:M:Y HH:MM:SS - Serial-SPI Surface Mount μSOP 10 3.05 x 3.05 x 0.95mm 3.05mm 3.05mm 0.95mm 5.5 V +85 °C
RS-stocknr. 188-9342
FabrikantnummerM41T80M6F
1,88 €
Each
Aantal stuks
Alarm, Calendar Binary, D:D:M:Y:C - - Serial-2 Wire, Serial-I2C Surface Mount SO 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm 5.5 V +85 °C
RS-stocknr. 921-5532
FabrikantnummerCDP68HC68T1MZ
10,23 €
Each
Aantal stuks
Alarm, Battery Backup, Calendar, Watchdog Timer DW:DM:M:Y HH:MM:SS 32B Serial-SPI Surface Mount SOIC W 20 13 x 7.6 x 2.35mm 13mm 7.6mm 2.35mm 6 V +85 °C
RS-stocknr. 177-0305
FabrikantnummerMCP7940N-E/SN
FabrikantMicrochip
0,615 €
Each (In a Tube of 100)
Aantal stuks
- D:M:Y, DW HH:MM:SS - Serial-I2C Surface Mount SOIC 8 4.9 x 3.9 x 1.5mm 4.9mm 3.9mm 1.5mm 5.5 V +125 °C
Nieuw
RS-stocknr. 205-3456
FabrikantnummerX1B000311000112
FabrikantEpson
0,927 €
Each (On a Reel of 250)
Aantal stuks
Real Time Clock - - - - - 3.2x2.5 ceramic package 10 - - - - - -
RS-stocknr. 189-7236
FabrikantnummerDS1390U-33+
FabrikantMaxim Integrated
2,263 €
Each (In a Tube of 50)
Aantal stuks
Battery Backup, Calendar, NV RAM DW:DM:M:Y HH:MM:SS - Serial-SPI Surface Mount μSOP 10 3.05 x 3.05 x 0.95mm 3.05mm 3.05mm 0.95mm 5.5 V +85 °C
Related Products
A range of real-time clock products from Maxim ...
Description:
A range of real-time clock products from Maxim incorporating non-volatile RAM memory for data retention. The clock/calendar functions provide seconds, minutes, hours, day, date, month, and year information. The clocks generally operate in either the 12 or 24-hour format with ...
Provides Real-Time Clock Counts Seconds, Minutes, Hours, Date ...
Description:
Provides Real-Time Clock Counts Seconds, Minutes, Hours, Date of the Month, Month, Day of the Week, and Year with Leap Year Compensation Valid Up to 2100 Power-Control Circuitry Supports System Power-On from Day/Time AlarmMicroprocessor Monitor Halts Microprocessor During Power Fail ...
Integrated NV SRAM, Real-Time Clock, Crystal, Power-Fail Control ...
Description:
Integrated NV SRAM, Real-Time Clock, Crystal, Power-Fail Control Circuit, and Lithium Energy SourceClock Registers are Accessed Identically to the Static RAM. These Registers are Resident in the Eight Top RAM Locations.Century Byte Register (i.e., Y2K Compliant)Totally Nonvolatile with Over 10 ...
Incorporates Industry-Standard DS12887 PC Clock Plus Enhanced FunctionsRTC ...
Description:
Incorporates Industry-Standard DS12887 PC Clock Plus Enhanced FunctionsRTC Counts Seconds, Minutes, Hours, Day, Date, Month, and Year with Leap Year Compensation Through 2099Optional +3.0V or +5.0V OperationSMI Recovery Stack64-Bit Silicon Serial NumberPower-Control Circuitry Supports System Power-On from ...