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    Real Time Clocks

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    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

    238 สินค้าที่แสดงสำหรับ Real Time Clocks

    • RS Stock No. 229-7087
    • หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No. TPL5010DDCR
    Each: (In a Pack of 25)
    THB18.487
    Texas Instruments
    -
    -
    -
    -
    -
    -
    SOT-23-THIN
    6
    -
    -
    -
    -
    -
    -
    • RS Stock No. 229-7087P
    • หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No. TPL5010DDCR
    Each (Supplied on a Reel)
    THB18.487
    Texas Instruments
    -
    -
    -
    -
    -
    -
    SOT-23-THIN
    6
    -
    -
    -
    -
    -
    -
    • RS Stock No. 190-5189P
    • หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No. DS17287-5+
    Each (Supplied in a Tube)
    THB1,227.72
    Maxim Integrated
    NV SRAM, Real Time Clock
    D:DM:Y
    SS:MM:HH
    114B
    Multiplexed
    Through Hole
    EDIP
    24
    1.34 x 0.72 x 0.37mm
    -
    1.34mm
    0.72mm
    0.37mm
    5.5 V
    • RS Stock No. 714-7288P
    • หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No. M41T56M6F
    Each (Supplied on a Reel)
    THB127.39
    STMicroelectronics
    Calendar, Chip Deselect, Switch Over
    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
    • RS Stock No. 714-7288
    • หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No. M41T56M6F
    Each: (In a Pack of 2)
    THB127.39
    STMicroelectronics
    Calendar, Chip Deselect, Switch Over
    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
    • RS Stock No. 904-7512P
    • หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No. X1B000311000112
    Each (Supplied on a Reel)
    THB43.66
    Epson
    Clock
    -
    SS:HH
    32bit
    Serial-I2C
    Surface Mount
    -
    10
    3.2 x 2.5 x 1mm
    -
    3.2mm
    2.5mm
    1mm
    5.5 V
    • RS Stock No. 904-7512
    • หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No. X1B000311000112
    Each
    THB43.66
    Epson
    Clock
    -
    SS:HH
    32bit
    Serial-I2C
    Surface Mount
    -
    10
    3.2 x 2.5 x 1mm
    -
    3.2mm
    2.5mm
    1mm
    5.5 V
    • RS Stock No. 169-8222
    • หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No. X1B000311000112
    Each (On a Tape of 20)
    THB46.805
    Epson
    Clock
    -
    SS:HH
    32bit
    Serial-I2C
    Surface Mount
    -
    10
    3.2 x 2.5 x 1mm
    -
    3.2mm
    2.5mm
    1mm
    5.5 V
    • RS Stock No. 912-6738
    • หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No. MCP79411-I/SN
    Each (In a Tube of 100)
    THB42.077
    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
    • RS Stock No. 798-5267P
    • หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No. MCP79411-I/SN
    Each (Supplied in a Tube)
    THB42.277
    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
    • RS Stock No. 146-0213
    • หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No. MCP79412-I/SN
    Each (In a Tube of 100)
    THB45.268
    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
    • RS Stock No. 798-5267
    • หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No. MCP79411-I/SN
    Each: (In a Pack of 10)
    THB42.277
    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
    • RS Stock No. 168-8043
    • หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No. M41ST87WSS6F
    Each (On a Reel of 1350)
    THB225.842
    STMicroelectronics
    Calendar
    D:D:M:Y:C
    HH:MM:SS:HSS
    128B
    Serial
    Surface Mount
    SSOP
    20
    7.5 x 5.6 x 1.85mm
    -
    7.5mm
    5.6mm
    1.85mm
    3.6 V
    • RS Stock No. 686-5036
    • หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No. M48T58-70PC1
    Each
    THB925.89
    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
    • RS Stock No. 686-5036P
    • หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No. M48T58-70PC1
    Each (Supplied in a Tube)
    THB925.89
    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
    • RS Stock No. 205-3457P
    • หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No. X1B000311000112
    Each (Supplied on a Reel)
    THB57.902
    Epson
    Real Time Clock
    -
    -
    -
    -
    -
    3.2x2.5 ceramic package
    10
    -
    -
    -
    -
    -
    -
    • RS Stock No. 205-3457
    • หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No. X1B000311000112
    Each: (In a Pack of 5)
    THB57.902
    Epson
    Real Time Clock
    -
    -
    -
    -
    -
    3.2x2.5 ceramic package
    10
    -
    -
    -
    -
    -
    -
    • RS Stock No. 169-8144
    • หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No. Q41802551000111
    Each (On a Reel of 250)
    THB101.603
    Epson
    Alarm, Calendar, Timer
    -
    -
    -
    Serial-I2C
    Surface Mount
    SOP
    14
    5 x 10.1 x 3.2mm
    -
    5mm
    10.1mm
    3.2mm
    5.5 V
    • RS Stock No. 165-2125
    • หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No. MCP7940N-I/P
    Each (In a Tube of 60)
    THB34.896
    Microchip
    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
    • RS Stock No. 810-3933
    • หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No. MCP7940N-I/P
    Each: (In a Pack of 10)
    THB37.493
    Microchip
    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
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