參數(shù)資料
      型號: PSD835F1V-B-20B81
      廠商: 意法半導(dǎo)體
      英文描述: Configurable Memory System on a Chip for 8-Bit Microcontrollers
      中文描述: 在8片位微控制器可配置存儲系統(tǒng)
      文件頁數(shù): 24/110頁
      文件大?。?/td> 570K
      代理商: PSD835F1V-B-20B81
      PSD835G2
      PSD8XX Family
      23
      Figure 4. Data Polling Flow Chart
      START
      READ DQ5 & DQ7
      at VALID ADDRESS
      YES
      YES
      YES
      NO
      NO
      NO
      =
      DATA7
      DQ5
      =1
      =
      DATA
      READ DQ7
      FAIL
      Program/Erase
      Operation Failed
      Issue Reset Instruction
      PASS
      Program/Erase
      Operation is
      Completed
      The
      PSD835G2
      Functional
      Blocks
      (cont.)
      9.1.1.7.2 Data Toggle
      Checking the Data Toggle bit on DQ6 is a method of determining whether a Program or
      Erase instruction is in progress or has completed. Figure 5 shows the Data Toggle
      algorithm.
      When the MCU issues a programming instruction, the embedded algorithm within the
      PSD835G2 begins. The MCU then reads the location to be programmed in Flash to check
      status. Data bit DQ6 of this location will toggle each time the MCU reads this location until
      the embedded algorithm is complete. The MCU continues to read this location, checking
      DQ6 and monitoring the Error bit on DQ5. When DQ6 stops toggling (two consecutive
      reads yield the same value), and the Error bit on DQ5 remains
      0
      , then the embedded
      algorithm is complete. If the Error bit on DQ5 is
      1
      , the MCU should test DQ6 again, since
      DQ6 may have changed simultaneously with DQ5 (see Figure 5).
      The Error bit at DQ5 will be set if either an internal timeout occurred while the embedded
      algorithm attempted to program, or if the MCU attempted to program a
      1
      to a bit that was
      not erased (not erased is logic
      0
      ).
      相關(guān)PDF資料
      PDF描述
      PSD835F1V-B-20B81I Configurable Memory System on a Chip for 8-Bit Microcontrollers
      PSD835F1V-B-20J Configurable Memory System on a Chip for 8-Bit Microcontrollers
      PSD835F1V-B-20JI Configurable Memory System on a Chip for 8-Bit Microcontrollers
      PSD835F1V-B-20M Configurable Memory System on a Chip for 8-Bit Microcontrollers
      PSD835F1V-B-20MI Configurable Memory System on a Chip for 8-Bit Microcontrollers
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