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      參數(shù)資料
      型號(hào)： PSD4135F1V-70JI
      廠商： 意法半導(dǎo)體
      英文描述： Flash In-System-Programmable Peripherals for 16-Bit MCUs
      中文描述： Flash在系統(tǒng)可編程外設(shè)的16位微控制器
      文件頁(yè)數(shù)： 36/93頁(yè)
      文件大?。?/td> 503K
      代理商： PSD4135F1V-70JI
      Preliminary Information
      PSD4000 Series
      33
      The
      PSD4000
      Functional
      Blocks
      (cont.)
      9.2.1 Decode PLD (DPLD)
      The DPLD, shown in Figure 10, is used for decoding the address for internal components.
      The DPLD can generate the following decode signals:
      8 sector selects for the main Flash memory (three product terms each)
      4 sector selects for the Secondary Flash memory (three product terms each)
      1 internal SRAM select (three product terms)
      1 internal CSIOP select (select PSD registers, one product term)
      Inputs to the DPLD chip selects may include address inputs, Page Register inputs and
      other user defined external inputs from Ports A, B, C, D or F.
      9.2.2 General Purpose PLD (GPLD)
      The General Purpose PLD implements user defined system combinatorial logic function
      or chip selects for external devices. Figure 11 shows how the GPLD is connected to the
      I/O Ports. The GPLD has 24 outputs and each are routed to a port pin. The port pin can
      also be configured as input to the GPLD. When it is not used as GPLD output or input, the
      pin can be configured to perform other I/O functions.
      All GPLD outputs are identical except in the number of available product terms (PTs) for
      logic implementation. Select the pin that can best meet the PT requirement of your logic
      function or chip select. In general, a PT is consumed for each logic
      “
      OR
      ”
      function that you
      specify in PSDsoft. However, certain logic functions can consume more than one PT even
      if no logic
      “
      OR
      ”
      is specified (such as specifying an address range with boundaries of high
      granularity).
      Table 13 shows the number of
      “
      native
      ”
      PTs for each GPLD output pin. A native PT means
      that a particular PT is dedicated to an output pin. For example, Table 13 shows that PSD
      Port A pin PA0 has 3 native product terms. This means a guaranteed minimum of 3 PTs is
      available to implement logic for that pin.
      PSD silicon and PSDsoft can include additional PTs beyong the native PTs to implement
      logic. This is a transparent operation that occurs as needed through PT expansion
      (internal feedback) or PT allocation (internal borrowing). You may notice in the fitter report
      generated by PSDsoft that for a given GPLD output pin, more PTs were used to implement
      logic than the number of native PTs available for that pin. This is because PSDsoft has
      called on unused PTs from other GPLD output pins to make your logic design fit (PT
      allocation or PT expansion). For optimum results, choose a GPLD output pin with a large
      number of native PTs for complicated logic.
      GPLD Output on Port Pin
      Number of Native
      Product Terms
      3
      9
      4
      7
      1
      Port A, pins PA0-3
      Port A, pins PA4-7
      Port B, pins PB0-3
      Port B, pins PB4-7
      Port C, pins PC0-7
      Table 13. GPLD Product Term Availability
      相關(guān)PDF資料
      PDF描述
      PSD4135F1V-70M Flash In-System-Programmable Peripherals for 16-Bit MCUs
      PSD4135F1V-70MI Flash In-System-Programmable Peripherals for 16-Bit MCUs
      PSD4135F1V-70U Flash In-System-Programmable Peripherals for 16-Bit MCUs
      PSD4135F1V-70UI Flash In-System-Programmable Peripherals for 16-Bit MCUs
      PSD4135F1V-90B81 Flash In-System-Programmable Peripherals for 16-Bit MCUs
      相關(guān)代理商/技術(shù)參數(shù)
      參數(shù)描述
      PSD4135F1V-70M 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash In-System-Programmable Peripherals for 16-Bit MCUs
      PSD4135F1V-70MI 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash In-System-Programmable Peripherals for 16-Bit MCUs
      PSD4135F1V-70U 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash In-System-Programmable Peripherals for 16-Bit MCUs
      PSD4135F1V-70UI 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash In-System-Programmable Peripherals for 16-Bit MCUs
      PSD4135F1V-90B81 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash In-System-Programmable Peripherals for 16-Bit MCUs
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