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    參數(shù)資料
    

    


    


    
型號(hào)：
PSD4135F1V-A-20B81I

    

    
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)

    

    
文件大小：
503K

    

    
代理商：
PSD4135F1V-A-20B81I


    

    

    

	
    
    
    

    
    
	
    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-A-20J
Flash In-System-Programmable Peripherals for 16-Bit MCUs

    

    
PSD4135F1V-B-12B81I
Flash In-System-Programmable Peripherals for 16-Bit MCUs

    

    
PSD4135F1V-B-12J
Flash In-System-Programmable Peripherals for 16-Bit MCUs

    

    
PSD4135F1V-B-12JI
Flash In-System-Programmable Peripherals for 16-Bit MCUs

    

    
PSD4135F1V-B-12M
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-A-20J
 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash In-System-Programmable Peripherals for 16-Bit MCUs

    

    
PSD4135F1V-A-20JI
 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash In-System-Programmable Peripherals for 16-Bit MCUs

    

    
PSD4135F1V-A-20M
 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash In-System-Programmable Peripherals for 16-Bit MCUs

    

    
PSD4135F1V-A-20MI
 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Flash In-System-Programmable Peripherals for 16-Bit MCUs

    

    
PSD4135F1V-A-20U
 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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