參數(shù)資料
    

    


    


    
型號(hào)：
PSD4235G3V-C-70UI

    

    
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)：
24/93頁(yè)

    

    
文件大?。?/td>
503K

    

    
代理商：
PSD4235G3V-C-70UI


    

    

    

	
    
    
    

    
    
	
    Preliminary Information
    PSD4000 Series
    21
    Figure 3. Data Polling Flow Chart
    START
    READ DQ5 & DQ7
    (DQ13 & DQ15)
    at VALID EVEN ADDRESS
    YES
    YES
    YES
    NO
    NO
    NO
     DQ7
    (D=
    DATA7
    (DATA15)
    DQ5
    (DQ13)
    =1
    READ DQ7
    (DQ15)
    FAIL
    Program/Erase
    Operation Failed
    Issue Reset Instruction
    PASS
    Program/Erase
    Operation is
    Completed
     DQ7
    (D=
    DATA7
    (DATA15)
    The 
    PSD4000
    Functional
    Blocks
    (cont.)
    9.1.1.6.2   Data Toggle
    Checking the Data Toggle bit on DQ6 (DQ14) is a method of determining whether a
    Program or Erase instruction is in progress or has completed. Figure 4 shows the Data
    Toggle algorithm.
    When the MCU issues a programming instruction, the embedded algorithm within the
    PSD4000 begins. The MCU then reads the location to be programmed in Flash to check
    status. Data bit DQ6 (DQ14) 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 (DQ14) and monitoring the Error bit on DQ5 (DQ13) . When 
    DQ6 (DQ14) stops toggling (two consecutive reads yield the same value), and the Error bit
    on DQ5 (DQ13) remains 
    ‘
    0
    ’
    , then the embedded algorithm is complete. If the Error bit on
    DQ5 (DQ13) is 
    ‘
    1
    ’
    , the MCU should test DQ6 (DQ14) again, since DQ6 (DQ14) may have
    changed simultaneously with DQ5 (DQ13) (see Figure 4).
    The Error bit at DQ5 (DQ13) 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
    		

    
    

    
PSD4235G3V-C-90B81
Flash In-System-Programmable Peripherals for 16-Bit MCUs

    

    
PSD4235G3V-C-90B81I
Flash In-System-Programmable Peripherals for 16-Bit MCUs

    

    
PSD4235G3V-C-90J
Flash In-System-Programmable Peripherals for 16-Bit MCUs

    

    
PSD4235G3V-C-90JI
Conductive Polymer Chip Capacitors / T520 Series - KO Cap; Capacitance [nom]: 470uF; Working Voltage (Vdc)[max]: 6.3V; Capacitance Tolerance: +/-20%; Dielectric: Conductive Polymer; ESR: 15mΩ; Lead Style: Surface-Mount Chip; Lead Dimensions: 7343-40; Termination: 100% Tin (Sn); Body Dimensions: 7.3mm x 4.3mm x 4.0mm; Temperature Range: -55C to +105C; Container: Tape & Reel; Qty per Container: 500; Features: Low ESR

    

    
PSD4235G3V-C-90M
Flash In-System-Programmable Peripherals for 16-Bit MCUs

    

    

    

    


    


    

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