參數資料
      型號: MPC8280CVRPX
      廠商: FREESCALE SEMICONDUCTOR INC
      元件分類: 微控制器/微處理器
      英文描述: 32-BIT, 300 MHz, RISC PROCESSOR, PBGA516
      封裝: 27 X 27 MM, 2.25 MM, 1 MM PITCH, LEAD FREE, PLASTIC, BGA-516
      文件頁數: 9/83頁
      文件大?。?/td> 618K
      代理商: MPC8280CVRPX
      MPC8280 PowerQUICC II Family Hardware Specifications, Rev. 2
      Freescale Semiconductor
      17
      AC Electrical Characteristics
      This table lists CPM input characteristics.
      NOTE: Rise/Fall Time on CPM Input Pins
      It is recommended that the rise/fall time on CPM input pins should not
      exceed 5 ns. This should be enforced especially on clock signals. Rise time
      refers to signal transitions from 10% to 90% of VCC; fall time refers to
      transitions from 90% to 10% of VCC.
      NOTE
      Although the specifications generally reference the rising edge of the clock,
      the following AC timing diagrams also apply when the falling edge is the
      active edge.
      This figure shows the FCC internal clock.
      Figure 3. FCC Internal Clock Diagram
      Table 10. AC Characteristics for CPM Inputs1
      1 Input specifications are measured from the 50% level of the signal to the 50% level of the rising edge of CLKIN. Timings are
      measured at the pin.
      Spec Number
      Characteristic
      Value (ns)
      Setup
      Hold
      Setup
      Hold
      66 MHz
      83 MHz
      100 MHz
      66 MHz
      83 MHz
      100 MHz
      sp16a
      sp17a FCC inputs—internal clock (NMSI)
      666000
      sp16b
      sp17b FCC inputs—external clock (NMSI)
      2.5
      2
      sp18a
      sp19a SCC/SMC/SPI/I2C inputs—internal clock
      (NMSI)
      666000
      sp18b
      sp19b SCC/SMC/SPI/I2C inputs—external clock
      (NMSI)
      444222
      sp20
      sp21
      TDM inputs/SI
      5
      2.5
      sp22
      sp23
      PIO/TIMER/IDMA inputs
      8
      0.5
      BRG_OUT
      FCC input signals
      FCC output signals
      Note: When GFMR.[TCI] = 1
      Note: When GFMR[TCI] = 0
      sp36a/sp37a
      sp17a
      sp16a
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