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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Täpsem kirjeldus Brand Stock Functions Recently Introduced Date Format Time Format User RAM Bus Type Mounting Type Package Type Pin Count Dimensions Length Width Height Maximum Operating Supply Voltage Minimum Operating Supply Voltage Maximum Operating Temperature Minimum Operating Temperature
Microchip Technology MCP79400-I/MS, Real Time Clock (RTC) Serial-I2C, 8-Pin MSOP Microchip Technology 400 - - 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 1.8 V +85 °C -40 °C
Microchip Technology MCP79401-I/SN, Real Time Clock (RTC) Serial-I2C, 8-Pin SOIC Microchip Technology 400 - - - 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 1.8 V +85 °C -40 °C
Microchip Technology MCP7940N-E/SN, Real Time Clock (RTC) Serial-I2C, 8-Pin SOIC Microchip Technology 400 - - - 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 1.8 V +125 °C -40 °C
Microchip Technology MCP795W10-I/SL, Real Time Clock (RTC) Serial-SPI, 14-Pin SOIC Microchip Technology 228 - - - 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 1.8 V +85 °C -40 °C
Microchip Technology MCP79412-I/MS, Real Time Clock (RTC) Serial-I2C, 8-Pin MSOP Microchip Technology 200 - - - HH:MM:SS - Serial-I2C Surface Mount MSOP 8 3 x 3 x 0.95mm 3mm 3mm 0.95mm 5.5 V 1.8 V +85 °C -40 °C
ANALOG MULTIPLEXER SINGLE 8:1 TSSOP16
  • Hind ei ole kuvatav
  • tk (pakis 5)
  • Kontrolli laoseisu
  • Võrdle
Maxim 0 - - - - - - - - - - - - - - - - -
Accurate I2C RTC Int Crystal SRAM Maxim 0 - - - - - - - - - - - - - - - - -
Accurate I2C RTC Int Crystal SRAM
  • Hind ei ole kuvatav
  • tk (rullis 1000)
  • Kontrolli laoseisu
  • Võrdle
Maxim 0 - - - - - - - - - - - - - - - - -
Accurate I2C-Integrated RTC/TCXO/Crystal
  • Hind ei ole kuvatav
  • tk (rullis 1000)
  • Kontrolli laoseisu
  • Võrdle
Maxim 0 - - - - - - - - - - - - - - - - -
Accurate I2C-Integrated RTC/TCXO/Crystal Maxim 0 - - - - - - - - - - - - - - - - -
Accurate I2C-Integrated RTC/TCXO/Crystal
  • Hind ei ole kuvatav
  • tk (rullis 1000)
  • Kontrolli laoseisu
  • Võrdle
Maxim 0 - - - - - - - - - - - - - - - - -
Accurate I2C-Integrated RTC/TCXO/Crystal Maxim 0 - - - - - - - - - - - - - - - - -
Accurate SPI Bus RTC Int Crystal SRAM
  • Hind ei ole kuvatav
  • tk (rullis 1000)
  • Kontrolli laoseisu
  • Võrdle
Maxim 0 - - - - - - - - - - - - - - - - -
Accurate SPI Bus RTC Int Crystal SRAM
  • Hind ei ole kuvatav
  • tk (rullis 1000)
  • Kontrolli laoseisu
  • Võrdle
Maxim 0 - - - - - - - - - - - - - - - - -
Accurate SPI Bus RTC Int Crystal SRAM Maxim 0 - - - - - - - - - - - - - - - - -
Accurate SPI Bus RTC Int Crystal SRAM Maxim 0 - - - - - - - - - - - - - - - - -
BU9873FVT-GE2, Real Time Clock (RTC) Serial-I2C, 8-Pin TSSOP
  • RS kood 185-0951
  • Bränd ROHM
  • Tootja partnumber BU9873FVT-GE2
ROHM 0 Real Time Clock - YY:MM:DD:dd HH:MM:SS - Serial-I2C Surface Mount TSSOP 8 4.4 x 3 x 1mm 4.4mm 3mm 1mm 5.5 V 1.8 V +85 °C -40 °C
BU9873FVT-GE2, Real Time Clock (RTC) Serial-I2C, 8-Pin TSSOP
  • RS kood 185-1011
  • Bränd ROHM
  • Tootja partnumber BU9873FVT-GE2
ROHM 0 Real Time Clock - YY:MM:DD:dd HH:MM:SS - Serial-I2C Surface Mount TSSOP 8 4.4 x 3 x 1mm 4.4mm 3mm 1mm 5.5 V 1.8 V +85 °C -40 °C
CIRCUIT MINUTERIE DE CHARGE D'ENTRETIEN
  • Hind ei ole kuvatav
  • tk (pakis 5)
  • Kontrolli laoseisu
  • Võrdle
Maxim 0 - - - - - - - - - - - - - - - - -
CIRCUIT MINUTERIE DE CHARGE D'ENTRETIEN
  • Hind ei ole kuvatav
  • tk (pakis 5)
  • Kontrolli laoseisu
  • Võrdle
Maxim 0 - - - - - - - - - - - - - - - - -
Vaata laoseisu
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. Laoinfo uueneb kord päevas, seega võib kuvatav laoseis sõltuvalt kellaajast olla erinev.
RS kood:
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