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    參數(shù)資料
    型號: HD40C4081
    廠商: Hitachi,Ltd.
    英文描述: Low-Voltage AS Microcomputers with On-Chip A/D Converter(帶片上A/D轉(zhuǎn)換器的低壓微計算機(jī))
    中文描述: 低電壓如同在微機(jī)芯片的A / D轉(zhuǎn)換器(帶片上的A / D轉(zhuǎn)換器的低壓微計算機(jī))
    文件頁數(shù): 102/162頁
    文件大?。?/td> 482K
    代理商: HD40C4081
    HD404374/HD404384/HD404389/HD404082/HD404084 Series
    102
    Bit 1 (SMR21) of serial mode register 2 (SMR2) performs SO pin high/low control in the idle state. The
    SO pin changes at the same time as the high/low write.
    SMR21
    0
    1
    R2
    2
    /SI/SO pin output buffer control
    PMOS active
    PMOS off (NMOS open-drain output)
    SMR22
    0
    1
    Idle high/low control
    SO pin set to low-level output in idle state
    SO pin set to high-level output in idle state
    Serial mode register 2 (SMR2: $025)
    Bit
    Read/Write
    Initial value on reset
    Bit name
    3
    2
    W
    0
    SMR22
    1
    W
    undeternined
    SMR21
    0
    Figure 57 Serial Mode Register 2 (SMR2)
    Serial data register (SRL: $026, SRU: $027):
    The serial data register (SRL, SRU) has the following functions. See figures 58 and 59.
    Transmit data write and shift operations
    Receive data shift and read operations
    The data written to the serial data register (SRL, SRU) is output LSB-first from the SO pin in
    synchronization with the falling edge of the serial clock.
    External data input LSB-first from the SI pin is latched in synchronization with the rising edge of the serial
    clock. Figure 60 shows the serial clock and data input/output timing chart.
    Writing and reading of the serial data register (SRL, SRU) must be performed only after data
    transmission/reception is completed. The data contents are not guaranteed if a read or write is performed
    during data transmission or reception.
    相關(guān)PDF資料
    PDF描述
    HD40A4372 Low-Voltage AS Microcomputers with On-Chip A/D Converter(帶片上A/D轉(zhuǎn)換器的低壓微計算機(jī))
    HD40A4374 Low-Voltage AS Microcomputers with On-Chip A/D Converter(帶片上A/D轉(zhuǎn)換器的低壓微計算機(jī))
    HD40A4382 Low-Voltage AS Microcomputers with On-Chip A/D Converter(帶片上A/D轉(zhuǎn)換器的低壓微計算機(jī))
    HD40A4384 Low-Voltage AS Microcomputers with On-Chip A/D Converter(帶片上A/D轉(zhuǎn)換器的低壓微計算機(jī))
    HD40A4388 Low-Voltage AS Microcomputers with On-Chip A/D Converter(帶片上A/D轉(zhuǎn)換器的低壓微計算機(jī))
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