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      參數(shù)資料
      型號: M30201M2T
      廠商: Mitsubishi Electric Corporation
      英文描述: SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
      中文描述: 單片16位CMOS微機(jī)
      文件頁數(shù): 86/159頁
      文件大小: 2319K
      代理商: M30201M2T
      Unde
      Clock asynchronous serial I/O (UART) mode
      deeopmen
      Mitsubishi microcomputers
      M30201 Group
      SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
      86
      Figure 1.79. UARTi transmit/receive mode register in UART mode
      Symbol
      UiMR(i=0,1)
      Address
      03A0
      16
      , 03A8
      16
      When reset
      00
      16
      CKDIR
      UARTi transmit / receive mode registers
      Internal / external clock
      select bit (Note)
      Stop bit length select bit
      STPS
      PRY
      PRYE
      SLEP
      0 : Internal clock
      1 : External clock
      0 : One stop bit
      1 : Two stop bits
      Valid when bit 6 = “1”
      0 : Odd parity
      1 : Even parity
      Bit name
      Function
      Bit symbol
      b7 b6
      b5
      b4
      b3
      b2
      b1 b0
      SMD0
      SMD1
      SMD2
      Serial I/O mode select bit
      b2 b1 b0
      1 0 0 : Transfer data 7 bits long
      1 0 1 : Transfer data 8 bits long
      1 1 0 : Transfer data 9 bits long
      0 : Parity disabled
      1 : Parity enabled
      0 : Sleep mode deselected
      1 : Sleep mode selected
      Odd / even parity
      select bit
      Parity enable bit
      Sleep select bit
      A
      A
      A
      A
      A
      A
      A
      A
      Note: UART1 can use only internal clock. Must set this bit to “1”.
      Table 1.29 lists the functions of the input/output pins during UART mode. Note that for a period from
      when the UARTi operation mode is selected to when transfer starts, the TxDi pin outputs a “H”. (If the N-
      channel open-drain is selected, this pin is in floating state.)
      Table 1.29. Input/output pin functions in UART mode
      Pin name
      Function
      TxDi
      (P5
      0
      , P4
      0
      )
      Method of selection
      Serial data output
      Serial data input
      Programmable I/O port
      Transfer clock input
      RxDi
      (P5
      1
      , P4
      2
      )
      CLK0
      (P5
      2
      )
      Internal/external clock select bit (bit 3 at address 03A0
      16
      ) = “0”
      Internal/external clock select bit (bit 3 at address 03A0
      16
      ) = “1”
      Port P5
      1
      and P4
      2
      direction register (bit 1 at address 03EB
      16
      , bit 2 at
      address 03EA
      16
      )= “0”
      (Can be used as an input port when performing transmission only)
      Port P5
      1
      and P4
      2
      direction register (bit 0 at address 03EB
      16
      , bit 0 at
      address 03EA
      16
      )= “1”
      (Can be used as an input port when performing reception only)
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