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    • 參數(shù)資料
      型號: M37207MF-XXXSP
      元件分類: 微控制器/微處理器
      英文描述: 8-BIT, MROM, 8.1 MHz, MICROCONTROLLER, PDIP64
      封裝: 0.750 INCH, 1.78 MM PITCH, PLASTIC, SDIP-64
      文件頁數(shù): 97/124頁
      文件大?。?/td> 1993K
      代理商: M37207MF-XXXSP
      MITSUBISHI MICROCOMPUTERS
      M37207MF-XXXSP/FP, M37207M8-XXXSP
      M37207EFSP/FP
      SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER
      and ON-SCREEN DISPLAY CONTROLLER
      71
      Fig. 68. CRT Clock Selection Register
      (13) Clock for Display
      As a clock for display to be used for CRT display, it is possible to
      select one of the following 3 types.
      Main clock supplied from the XIN pin
      Clock from the LC or RC supplied from the pins OSC1 and OSC2.
      Clock from the ceramic resonator or quartz-crystal oscillator sup-
      plied from the pins OSC1 and OSC2.
      This clock for display can be selected for each block by the CRT
      clock selection register (address 020916).
      When selecting the main clock, set the oscillation frequency to
      8 MHz.
      b7 b6 b5 b4 b3 b2 b1 b0
      CRT clock selection register (OP) [Address 020916]
      B
      Name
      Functions
      After reset R W
      CRT Clock Selection Register
      0, 1 CRT clock
      selection bits
      (OP0, OP1)
      0
      Since the main clock is used as the clock for
      display, the oscillation frequency is limited.
      Because of this, the character size in width
      (horizontal) direction is also limited. In this
      case, pins OSC1 and OSC2 are also used
      as input ports P70 and P71 respectively.
      The clock for display is supplied by connecting the
      following across the pins OSC1 and OSC2.
      a ceramic resonator only for CRT display and a feedback resistor
      a quartz-crystal oscillator only for CRT display and a feedback
      resistor (See note)
      2
      to
      6
      0
      b1
      The clock for display is supplied by connecting RC
      or LC across the pins OSC1 and OSC2.
      Functions
      10
      b0
      CRT oscillation
      frequency
      = f(XIN)
      Notes 1: It is necessary to connect other ceramic resonator or quartz-crystal oscillator across the pins XIN and XOUT.
      2: CC6 is the scnanning line double count mode flag.
      0
      1
      11
      RW
      R—
      CC6
      CC6 =
      “0” or “1”
      CC6 = “0”
      1
      0
      Do not set.
      7
      0
      Fix this bits to “0.”
      RW
      Nothing is assigned. These bits are write disable bits.
      When these bits are read out, the values are “0.”
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