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    參數資料
    型號: SCF5250
    廠商: Motorola, Inc.
    英文描述: SCF5250 Integrated ColdFire Microprocessor
    中文描述: SCF5250提供了集成的ColdFire微處理器
    文件頁數: 35/48頁
    文件大?。?/td> 767K
    代理商: SCF5250
    Electrical Characteristics
    SCF5250 Integrated ColdFire Microprocessor Data Sheet, Rev. 1.1
    Freescale Semiconductor
    35
    Figure 10. General-Purpose Parallel Port Timing Definition
    Table 29. IEEE 1149.1 (JTAG) AC Timing Specifications
    Num
    Characteristic
    Units
    Min
    Max
    -
    TCK Frequency of Operation
    0
    10
    MHz
    J1
    TCK Cycle Time
    100
    -
    nSec
    J2a
    TCK Clock Pulse High Width
    25
    -
    nSec
    J2b
    TCK Clock Pulse Low Width
    25
    -
    nSec
    J3a
    TCK Fall Time
    (V
    IH
    =2.4 V to V
    IL
    =0.5 V)
    5
    nSec
    J3b
    TCK Rise Time
    (V
    IL
    =0.5 v to V
    IH
    =2.4 V)
    5
    nSec
    J4
    TDI, TMS to TCK rising (Input Setup)
    8
    nSec
    J5
    TCK rising to TDI, TMS Invalid (Hold)
    10
    nSec
    J6
    Boundary Scan Data Valid to TCK (Setup)
    tbd
    nSec
    J7
    TCK to Boundary Scan Data Invalid to rising edge (Hold)
    tbd
    nSec
    J8
    TRST Pulse Width
    (asynchronous to clock edges)
    12
    nSec
    J9
    TCK falling to TDO Valid
    (signal from driven or three-state)
    15
    nSec
    J10
    TCK falling to TDO High Impedance
    15
    nSec
    J11
    TCK falling to Boundary Scan Data Valid
    (signal from driven or three-state)
    tbd
    nSec
    BCLK
    GPIO IN
    GPIO OUT
    P1
    P2
    P4
    P3
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