Real Time Clocks | RTC | DS3231 | RS
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    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, an 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 facilitates the performance of the software functions that are time dependant.

    Designed to run on ultra-low power consumption, RTCs often run on a lithium battery source but can also run on 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

    325 Produits présentés pour Real Time Clocks

    STMicroelectronics
    Battery Backup, Calendar, Chip Deselect, Switch Over, Write Protection
    DW:DM:M:Y
    HH:MM:SS
    32768B
    Parallel
    Through Hole
    PCDIP
    28
    39.88 x 18.34 x 8.89mm
    -
    39.88mm
    18.34mm
    8.89mm
    5.5 V
    NXP
    -
    -
    -
    128 bit, 128 bit
    -
    -
    SO8, SO8
    8, 8
    -
    -
    -
    -
    -
    -
    Microchip
    -
    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
    STMicroelectronics
    Battery Backup, Calendar, Chip Deselect, Switch Over, Write Protection
    DW:DM:M:Y
    HH:MM:SS
    8192B
    Parallel
    Through Hole
    PCDIP
    28
    39.88 x 18.34 x 8.89mm
    -
    39.88mm
    18.34mm
    8.89mm
    5.5 V
    STMicroelectronics
    Battery Backup, Calendar, Chip Deselect, Switch Over, Write Protection
    DW:DM:M:Y
    HH:MM:SS
    8192B
    Parallel
    Through Hole
    PCDIP
    28
    39.88 x 18.34 x 8.89mm
    -
    39.88mm
    18.34mm
    8.89mm
    5.5 V
    Microchip
    Battery Backup, Calendar, Clock, NV Timekeeping 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
    STMicroelectronics
    Battery Backup, Calendar, Chip Deselect, Switch Over, Write Protection
    DW:DM:M:Y
    HH:MM:SS
    32768B
    Parallel
    Through Hole
    PCDIP
    28
    39.88 x 18.34 x 8.89mm
    -
    39.88mm
    18.34mm
    8.89mm
    5.5 V
    Microchip
    Battery Backup, 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
    Maxim Integrated
    Clock
    DM:M:DM:Y
    SS:MM:HH
    -
    -
    Surface Mount
    SOIC
    8
    5 x 4 x 1.5mm
    -
    5mm
    4mm
    1.5mm
    5.5 V
    STMicroelectronics
    Timekeeper SRAM
    D:M:Y
    HH:MM:SS
    16kbit
    -
    Through Hole
    PCDIP
    24
    34.8 x 18.34 x 8.89mm
    -
    34.8mm
    18.34mm
    8.89mm
    5.5 V
    NXP
    -
    D:M:Y
    SS:MM:HH
    8B
    -
    -
    SO8
    8
    -
    -
    -
    -
    -
    -
    2,172 €
    l'unité (conditionné en bobine)
    Abracon
    -
    -
    -
    -
    -
    Surface Mount
    16-VFQFN
    -
    -
    -
    -
    -
    -
    -
    1,02 €
    L'unité (sur une bobine de 3000)
    Abracon
    -
    -
    -
    -
    -
    Surface Mount
    16-VFQFN
    -
    -
    -
    -
    -
    -
    -
    Microchip
    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
    NXP
    -
    D:W:M:Y
    SS:MM:HH
    128bit
    Serial-SPI
    -
    SO20
    20
    -
    -
    -
    -
    -
    -
    NXP
    -
    -
    -
    128 bit, 128 bit
    -
    -
    TSSOP14, TSSOP14
    14, 14
    -
    -
    -
    -
    -
    -
    Maxim Integrated
    NV SRAM, Real Time Clock
    DM:M:DW: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
    NXP
    -
    D:W:M:Y
    SS:MM:HH
    128bit
    -
    -
    TSSOP8
    8
    -
    -
    -
    -
    -
    -
    Texas Instruments
    Alarm, Battery Backup, Calendar, NV SRAM
    DW:DM:M:Y
    HH:MM:SS
    16B
    Parallel
    Surface Mount
    TSSOP
    28
    9.7 x 4.4 x 1.15mm
    -
    9.7mm
    4.4mm
    1.15mm
    3.6 V
    NXP
    -
    D:M:Y
    SS:MM:HH
    240B
    -
    -
    SO8
    8
    -
    -
    -
    -
    -
    -
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