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    參數(shù)資料
    

    


    


    
型號(hào)：
TMS320LC54x

    

    
廠商：
Texas Instruments, Inc.

    

    
英文描述：
1A, 52kHz (250kHz Max) Current Mode PWM Control Circuit with 16V UVLO Threshold and 96%  Max Duty Cycle; Package: SOIC-8 Narrow Body; No of Pins: 8; Container: Rail; Qty per Container: 98

    

    
中文描述：
定點(diǎn)數(shù)字信號(hào)處理器

    

    
文件頁數(shù)：
42/123頁

    

    
文件大小：
1205K

    

    
代理商：
TMS320LC54X


    

    

    

	
    
    
    

    
    
	
    www.ti.com
    External Clock Signal
     (Toggling 0V
    DDIO
    )
    XCLKIN
    X2
    NC
    X1
    External Clock Signal
     (Toggling 0V
    DD
    )
    XCLKIN
    X2
    NC
    X1
    C
    L1
    X2
    X1
    Crystal
    C
    L2
    XCLKIN
    TMS320F2808, TMS320F2806
    TMS320F2801, UCD9501
    Digital Signal Processors
    SPRS230F–OCTOBER 2003–REVISED SEPTEMBER 2005
    2. A 1.8-V external oscillator can be directly connected to the X1 pin. The X2 pin should be left
    unconnected and the XCLKIN pin tied low. The logic-high level in this case should not exceed V
    DD
    .
    The three possible input-clock configurations are shown in
     Figure 3-9
     through
     Figure 3-11
    Figure 3-9. Using a 3.3-V External Oscillator
    Figure 3-10. Using a 1.8-V External Oscillator
    Figure 3-11. Using the Internal Oscillator
    3.6.1.1
    External Reference Oscillator Clock Option
    The typical specifications for the external quartz crystal for a frequency of 20 MHz are listed below:
    Fundamental mode, parallel resonant
    C
    L
    (load capacitance) = 12 pF
    C
    L1
    = C
    L2
    = 24 pF
    C
    shunt
    = 6 pF
    ESR range = 30 to 60
     
    TI recommends that customers have the resonator/crystal vendor characterize the operation of their
    device with the DSP chip. The resonator/crystal vendor has the equipment and expertise to tune the tank
    circuit. The vendor can also advise the customer regarding the proper tank component values that will
    produce proper start up and stability over the entire operating range.
    3.6.1.2
    PLL-Based Clock Module
    The 280x devices have an on-chip, PLL-based clock module. This module provides all the necessary
    clocking signals for the device, as well as control for low-power mode entry. The PLL has a 4-bit ratio
    control PLLCR[DIV] to select different CPU clock rates. The watchdog module should be disabled before
    writing to the PLLCR register. It can be re-enabled (if need be) after the PLL module has stabilized, which
    takes 131072 OSCCLK cycles.
    Functional Overview
    42
    
    
    
    
    
    


    


    

    相關(guān)PDF資料
    		

    PDF描述
    		

    
    

    
TMS320LC5x
1A, 52kHz (250kHz Max) Current Mode PWM Control Circuit with 16V UVLO Threshold and 96%  Max Duty Cycle; Package: 8 LEAD PDIP; No of Pins: 8; Container: Rail; Qty per Container: 50

    

    
TMS320LC5X
1A, 52kHz (250kHz Max) Current Mode PWM Control Circuit with 16V UVLO Threshold and 96%  Max Duty Cycle; Package: SOIC-8 Narrow Body; No of Pins: 8; Container: Rail; Qty per Container: 98

    

    
TMS320LF2406PG
1A, 52kHz (250kHz Max) Current Mode PWM Control Circuit with 16V UVLO Threshold and 96%  Max Duty Cycle; Package: SOIC-8 Narrow Body; No of Pins: 8; Container: Rail; Qty per Container: 98

    

    
TMS320LF2406PGA
1A, 52kHz (250kHz Max) Current Mode PWM Control Circuit with 16V UVLO Threshold and 96%  Max Duty Cycle; Package: SOIC-8 Narrow Body; No of Pins: 8; Container: Tape and Reel; Qty per Container: 2500

    

    
TMS320LF2406PGE
DSP CONTROLLERS

    

    

    

    


    


    

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TMS320LF2402APGA
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TMS320LF2402APGS
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