參數(shù)資料
    型號: X1205S8IT1
    廠商: Intersil
    文件頁數(shù): 2/22頁
    文件大?。?/td> 0K
    描述: IC RTC/CALENDAR 2-WIRE 8-SOIC
    標(biāo)準(zhǔn)包裝: 2,500
    類型: 時鐘/日歷
    特點: 警報器,閏年
    時間格式: HH:MM:SS(12/24 小時)
    數(shù)據(jù)格式: YY-MM-DD-dd
    接口: I²C,2 線串口
    電源電壓: 2.7 V ~ 5.5 V
    電壓 - 電源,電池: 1.8 V ~ 5.5 V
    工作溫度: -40°C ~ 85°C
    安裝類型: 表面貼裝
    封裝/外殼: 8-SOIC(0.154",3.90mm 寬)
    供應(yīng)商設(shè)備封裝: 8-SOIC
    包裝: 帶卷 (TR)
    10
    FN8097.3
    May 2, 2006
    RTCF: Real Time Clock Fail Bit-Volatile
    This bit is set to a “1” after a total power failure. This is
    a read only bit that is set by hardware (X1205 inter-
    nally) when the device powers up after having lost all
    power to the device (both VCC and VBACK go to 0V).
    The bit is set regardless of whether VCC or VBACK is
    applied first. The loss of only one of the supplies does
    not set the RTCF bit to “1”. On power up after a total
    power failure, all registers are set to their default
    states and the clock will not increment until at least
    one byte is written to the clock register. The first valid
    write to the RTC section after a complete power failure
    resets the RTCF bit to “0” (writing one byte is suffi-
    cient).
    Table 2. Clock/Control Memory Map
    Addr.
    Type
    Reg
    Name
    Bit
    Range
    Def
    a
    ult
    7
    6
    5
    432
    10
    003F
    Status
    SR
    BAT
    AL1
    AL0
    0
    RWEL
    WEL
    RTCF
    01h
    0037
    RTC (SRAM)
    Y2K
    0
    Y2K21
    Y2K20
    Y2K13
    0
    Y2K10
    20h
    0036
    DW
    0
    DY2
    DY1
    DY0
    0-6
    00h
    0035
    YR
    Y23
    Y22
    Y21
    Y20
    Y13
    Y12
    Y11
    Y10
    0-99
    00h
    0034
    MO
    0
    G20
    G13
    G12
    G11
    G10
    1-12
    00h
    0033
    DT
    0
    D21
    D20
    D13
    D12
    D11
    D10
    1-31
    00h
    0032
    HR
    MIL
    0
    H21
    H20
    H13
    H12
    H11
    H10
    0-23
    00h
    0031
    MN
    0
    M22
    M21
    M20
    M13
    M12
    M11
    M10
    0-59
    00h
    0030
    SC
    0
    S22
    S21
    S20
    S13
    S12
    S11
    S10
    0-59
    00h
    0013
    Control
    (NONVOLATIL
    E)
    DTR
    0
    DTR2
    DTR1
    DTR0
    00h
    0012
    ATR
    0
    ATR5
    ATR4
    ATR3
    ATR2
    ATR1
    ATR0
    00h
    0011
    INT
    IM
    AL1E
    AL0E
    0
    X
    00h
    0010
    0
    00h
    000F
    Alarm1
    (NONVOLATIL
    E)
    Y2K1
    0
    A1Y2K21
    A1Y2K20
    A1Y2K13
    0
    A1Y2K10
    20h
    000E
    DWA1
    EDW1
    0
    DY2
    DY1
    DY0
    0-6
    00h
    000D
    YRA1
    Unused – Default = RTC Year value – Future expansion
    000C
    MOA1
    EMO1
    0
    A1G20
    A1G13
    A1G12
    A1G11
    A1G10
    1-12
    00h
    000B
    DTA1
    EDT1
    0
    A1D21
    A1D20
    A1D13
    A1D12
    A1D11
    A1D10
    1-31
    00h
    000A
    HRA1
    EHR1
    0
    A1H21
    A1H20
    A1H13
    A1H12
    A1H11
    A1H10
    0-23
    00h
    0009
    MNA1
    EMN1
    A1M22
    A1M21
    A1M20
    A1M13
    A1M12
    A1M11
    A1M10
    0-59
    00h
    0008
    SCA1
    ESC1
    A1S22
    A1S21
    A1S20
    A1S13
    A1S12
    A1S11
    A1S10
    0-59
    00h
    0007
    Alarm0
    (NONVOLATIL
    E)
    Y2K0
    0
    A0Y2K21
    A0Y2K20
    A0Y2K13
    0
    A0Y2K10
    19/20
    20h
    0006
    DWA0
    EDW0
    0
    DY2
    DY1
    DY0
    0-6
    00h
    0005
    YRA0
    Unused – Default = RTC Year value – Future expansion
    0004
    MOA0
    EMO0
    0
    A0G20
    A0G13
    A0G12
    A0G11
    A0G10
    1-12
    00h
    0003
    DTA0
    EDT0
    0
    A0D21
    A0D20
    A0D13
    A0D12
    A0D11
    A0D10
    1-31
    00h
    0002
    HRA0
    EHR0
    0
    A0H21
    A0H20
    A0H13
    A0H12
    A0H11
    A0H10
    0-23
    00h
    0001
    MNA0
    EMN0
    A0M22
    A0M21
    A0M20
    A0M13
    A0M12
    A0M11
    A0M10
    0-59
    00h
    0000
    SCA0
    ESC0
    A0S22
    A0S21
    A0S20
    A0S13
    A0S12
    A0S11
    A0S10
    0-59
    00h
    X1205
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