• 參數(shù)資料
    型號: TMS320V642AZDK7
    廠商: Texas Instruments, Inc.
    英文描述: 1A, 52kHz (250kHz Max) Current Mode PWM Control Circuit with 8.4V UVLO Threshold and 48% Max Duty Cycle; Package: SOIC-8 Narrow Body; No of Pins: 8; Container: Rail; Qty per Container: 98
    中文描述: 視頻/影像定點(diǎn)數(shù)字信號處理器
    文件頁數(shù): 100/123頁
    文件大?。?/td> 1205K
    代理商: TMS320V642AZDK7
    www.ti.com
    TMS320F2808, TMS320F2806
    TMS320F2801, UCD9501
    Digital Signal Processors
    SPRS230F–OCTOBER 2003–REVISED SEPTEMBER 2005
    Table 6-23
    shows the high-resolution PWM switching characteristics.
    Table 6-23. High Resolution PWM Characteristics at SYSCLKOUT = (60 - 100 MHz)
    MIN
    TYP
    150
    MAX
    310
    UNIT
    ps
    Micro Edge Positioning (MEP) step size
    (1)
    (1)
    Maximum MEP step size is based on worst-case process, maximum temperature and maximum voltage. MEP step size will increase
    with low voltage and high temperature and decrease with voltage and cold temperature.
    Applications that use the HRPWM feature should use MEP Scale Factor Optimizer (SFO) estimation software functions. See the TI
    software libraries for details of using SFO function in end applications. SFO functions help to estimate the number of MEP steps per
    SYSCLKOUT period dynamically while the HRPWM is in operation.
    Table 6-24
    shows the eCAP timing requirement and
    Table 6-25
    shows the eCAP switching characteristics.
    Table 6-24. Enhanced Capture (eCAP) Timing Requirement
    (1)
    TEST CONDITIONS
    Asynchronous
    Synchronous
    With input qualifier
    MIN
    MAX
    UNIT
    cycles
    cycles
    cycles
    t
    w(CAP)
    Capture input pulse width
    2t
    c(SCO)
    2t
    c(SCO)
    1t
    c(SCO)
    + t
    w(IQSW)
    (1)
    For an explanation of the input qualifier parameters, see
    Table 6-13
    .
    Table 6-25. eCAP Switching Characteristics
    PARAMETER
    TEST CONDITIONS
    MIN
    20
    MAX
    UNIT
    ns
    t
    w(APWM)
    Pulse duration, APWMx output high/low
    Table 6-26
    shows the eQEP timing requirement and
    Table 6-27
    shows the eQEP switching character-
    istics.
    Table 6-26. Enhanced Quadrature Encoder Pulse (eQEP) Timing Requirements
    (1)
    TEST CONDITIONS
    Asynchronous/synchronous
    With input qualifier
    Asynchronous/synchronous
    With input qualifier
    Asynchronous/synchronous
    With input qualifier
    Asynchronous/synchronous
    With input qualifier
    Asynchronous/synchronous
    With input qualifier
    MIN
    MAX
    UNIT
    cycles
    cycles
    cycles
    cycles
    cycles
    cycles
    cycles
    cycles
    cycles
    cycles
    t
    w(QEPP)
    QEP input period
    2t
    c(SCO)
    2(1t
    c(SCO)
    + t
    w(IQSW)
    )
    t
    w(INDEXH)
    QEP Index Input High time
    2t
    c(SCO)
    2t
    c(SCO)
    +t
    w(IQSW)
    t
    w(INDEXL)
    QEP Index Input Low time
    2t
    c(SCO)
    2t
    c(SCO)
    + t
    w(IQSW)
    t
    w(STROBH)
    QEP Strobe High time
    2t
    c(SCO)
    2t
    c(SCO)
    + t
    w(IQSW)
    t
    w(STROBL)
    QEP Strobe Input Low time
    2t
    c(SCO)
    2t
    c(SCO)
    +t
    w(IQSW)
    (1)
    For an explanation of the input qualifier parameters, see
    Table 6-13
    .
    100
    Electrical Specifications
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