<code id="4kkwc"></code>
  • <dfn id="4kkwc"></dfn>
  • 參數(shù)資料
    型號(hào): DS17485S-3+
    廠商: Maxim Integrated Products
    文件頁(yè)數(shù): 8/31頁(yè)
    文件大?。?/td> 0K
    描述: IC RTC 3V 4K NV RAM 24-SOIC
    產(chǎn)品培訓(xùn)模塊: Lead (SnPb) Finish for COTS
    Obsolescence Mitigation Program
    標(biāo)準(zhǔn)包裝: 31
    類型: 時(shí)鐘/日歷
    特點(diǎn): 警報(bào)器,夏令時(shí),閏年,NVSRAM,方波輸出
    存儲(chǔ)容量: 4KB
    時(shí)間格式: HH:MM:SS(12/24 小時(shí))
    數(shù)據(jù)格式: YY-MM-DD-dd
    接口: 并聯(lián)
    電源電壓: 2.7 V ~ 3.7 V
    電壓 - 電源,電池: 2.5 V ~ 3.7 V
    工作溫度: 0°C ~ 70°C
    安裝類型: 表面貼裝
    封裝/外殼: 24-SOIC(0.295",7.50mm 寬)
    供應(yīng)商設(shè)備封裝: 24-SOIC W
    包裝: 管件
    DS17285/DS17287/DS17485/DS17487/DS17885/DS17887
    Bit 7: SET. When the SET bit is 0, the update transfer
    functions normally by advancing the counts once per
    second. When the SET bit is written to 1, any update
    transfer is inhibited, and the program can initialize the
    time and calendar bytes without an update occurring in
    the midst of initializing. Read cycles can be executed in
    a similar manner. SET is a read/write bit and is not
    affected by any internal functions of the DS17x85.
    Bit 6: Periodic Interrupt Enable (PIE). This bit is a
    read/write bit that allows the periodic interrupt flag (PF)
    bit in Register C to drive the IRQ pin low. When PIE is
    set to 1, periodic interrupts are generated by driving
    the IRQ pin low at a rate specified by the RS3–RS0 bits
    of Register A. A 0 in the PIE bit blocks the IRQ output
    from being driven by a periodic interrupt, but the PF bit
    is still set at the periodic rate. PIE is not modified by
    any internal DS17x85 functions.
    Bit 5: Alarm Interrupt Enable (AIE). This bit is a
    read/write bit that, when set to 1, permits the alarm flag
    (AF) bit in Register C to assert IRQ. An alarm interrupt
    occurs for each second that the three time bytes equal
    the three alarm bytes, including a don’t care alarm
    code of binary 11XXXXXX. When the AIE bit is set to 0,
    the AF bit does not initiate the IRQ signal. The internal
    functions of the DS17x285/87 do not affect the AIE bit.
    Bit 4: Update-Ended Interrupt Enable (UIE). This bit is
    a read/write bit that enables the update-end flag (UF)
    bit in Register C to assert IRQ. The SET bit going high
    clears the UIE bit.
    Bit 3: Square-Wave Enable (SQWE). When this bit is
    set to 1 and E32k = 0, a square-wave signal at the fre-
    quency set by RS3–RS0 is driven out on the SQW pin.
    When the SQWE bit is set to 0 and E32k = 0, the SQW
    pin is held low. SQWE is a read/write bit. SQWE is set
    to 1 when VCC is powered up.
    Bit 2: Data Mode (DM). This bit indicates whether time
    and calendar information is in binary or BCD format.
    The program sets the DM bit to the appropriate format
    and can be read as required. This bit is not modified by
    internal functions. A 1 in DM signifies binary data, while
    a 0 in DM specifies binary-coded decimal (BCD) data.
    Bit 1: 24/12 Control (24/12). This bit establishes the
    format of the hours byte. A 1 indicates the 24-hour
    mode and a 0 indicates the 12-hour mode. This bit is
    read/write and is not affected by internal functions.
    Bit 0: Daylight Saving Enable (DSE). This bit is a
    read/write bit that enables two daylight saving adjust-
    ments when DSE is set to 1. On the first Sunday in
    April, the time increments from 1:59:59AM to
    3:00:00AM. On the last Sunday in October when the
    time first reaches 1:59:59AM, it changes to 1:00:00AM.
    When DSE is enabled, the internal logic tests for the
    first/last Sunday condition at midnight. If the DSE bit is
    not set when the test occurs, the daylight saving func-
    tion does not operate correctly. These adjustments do
    not occur when the DSE bit is zero. This bit is not
    affected by internal functions.
    Real-Time Clocks
    16
    ____________________________________________________________________
    BIT 7
    BIT 6
    BIT 5
    BIT 4
    BIT 3
    BIT 2
    BIT 1
    BIT 0
    SET
    PIE
    AIE
    UIE
    SQWE
    DM
    24/12
    DSE
    Register B (0Bh)
    MSB
    LSB
    相關(guān)PDF資料
    PDF描述
    VI-B5B-IU-S CONVERTER MOD DC/DC 95V 200W
    VE-264-MW CONVERTER MOD DC/DC 48V 100W
    VE-B6X-IU-S CONVERTER MOD DC/DC 5.2V 200W
    MCP4131T-103E/MS IC POT DGTL SNGL 10K SPI 8MSOP
    DS1687-5IND IC RTC 5V 64-BIT Y2K 24-EDIP
    相關(guān)代理商/技術(shù)參數(shù)
    參數(shù)描述
    DS17485S-3/T&R 功能描述:實(shí)時(shí)時(shí)鐘 RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時(shí)間格式:HH:MM:SS RTC 存儲(chǔ)容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube
    DS17485S-3+ 功能描述:實(shí)時(shí)時(shí)鐘 3V/5V RTC RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時(shí)間格式:HH:MM:SS RTC 存儲(chǔ)容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube
    DS17485S-3+T&R 制造商:Maxim Integrated Products 功能描述:REAL TIME CLOCK MULTIPLEXED 4KBYTE 24SOIC - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC RTC 3V 4K NV RAM 24-SOIC 制造商:Maxim Integrated Products 功能描述:Real Time Clock 3V/5V RTC
    DS17485S-3+T&R 功能描述:實(shí)時(shí)時(shí)鐘 3V/5V RTC RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時(shí)間格式:HH:MM:SS RTC 存儲(chǔ)容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube
    DS17485S5 制造商:DALLAS 功能描述:*