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    1. 參數(shù)資料
      型號: PSD9133V70MIT
      廠商: 意法半導(dǎo)體
      英文描述: Flash In-System Programmable ISP Peripherals For 8-bit MCUs
      中文描述: Flash在系統(tǒng)可編程ISP的外設(shè)的8位微控制器
      文件頁數(shù): 66/110頁
      文件大小: 1737K
      代理商: PSD9133V70MIT
      PSD813F2, PSD833F2, PSD834F2, PSD853F2, PSD854F2
      66/110
      PSD Chip Select Input (CSI, PD2)
      PD2 of Port D can be configured in PSDsoft Ex-
      press as PSD Chip Select Input (CSI). When Low,
      the signal selects and enables the internal Flash
      memory, EEPROM, SRAM, and I/O blocks for
      READ or WRITE operations involving the PSD. A
      High on PSD Chip Select Input (CSI, PD2) dis-
      ables the Flash memory, EEPROM, and SRAM,
      and reduces the PSD power consumption. How-
      ever, the PLD and I/O signals remain operational
      when PSD Chip Select Input (CSI, PD2) is High.
      There may be a timing penalty when using PSD
      Chip Select Input (CSI, PD2) depending on the
      speed grade of the PSD that you are using. See
      the timing parameter t
      SLQV
      in
      Table 61., page 94
      or
      Table 62., page 95
      .
      Input Clock
      The PSD provides the option to turn off CLKIN
      (PD1) to the PLD to save AC power consumption.
      CLKIN (PD1) is an input to the PLD AND Array and
      the Output Macrocells (OMC).
      During Power-down mode, or, if CLKIN (PD1) is
      not being used as part of the PLD logic equation,
      the clock should be disabled to save AC power.
      CLKIN (PD1) is disconnected from the PLD AND
      Array or the Macrocells block by setting Bits 4 or 5
      to a 1 in PMMR0.
      Input Control Signals
      The PSD provides the option to turn off the input
      control signals (CNTL0, CNTL1, CNTL2, Address
      Strobe (ALE/AS, PD0) and DBE) to the PLD to
      save AC power consumption. These control sig-
      nals are inputs to the PLD AND Array. During
      Power-down mode, or, if any of them are not being
      used as part of the PLD logic equation, these con-
      trol signals should be disabled to save AC power.
      They are disconnected from the PLD AND Array
      by setting Bits 2, 3, 4, 5, and 6 to a 1 in PMMR2.
      Table 32. APD Counter Operation
      APD Enable Bit
      ALE PD Polarity
      ALE Level
      APD Counter
      0
      X
      X
      Not Counting
      1
      X
      Pulsing
      Not Counting
      1
      1
      1
      Counting (Generates PDN after 15 Clocks)
      1
      0
      0
      Counting (Generates PDN after 15 Clocks)
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