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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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MPC826XACVR датащи(PDF) 15 Page - Freescale Semiconductor, Inc |
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MPC826XACVR датащи(HTML) 15 Page - Freescale Semiconductor, Inc |
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15 / 52 page  MPC8260A PowerQUICC™ II Integrated Communications Processor Hardware Specifications, Rev. 1.1 Freescale Semiconductor 15 Electrical and Thermal Characteristics Table 8 lists CPM input characteristics. Note that 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. Figure 3 shows the FCC external clock. Figure 3. FCC External Clock Diagram Table 8. AC Characteristics for CPM Inputs(1) Notes: 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 Setup (ns) Hold (ns) Max Min 66 MHz 83 MHz 66 MHz 83 MHz sp16a sp17a FCC inputs—internal clock (NMSI) 10 8 0 0 sp16b sp17b FCC inputs—external clock (NMSI) 3 2.5 3 2 sp20 sp21 TDM inputs/SI 15 12 12 10 sp18a sp19a SCC/SMC/SPI/I2C inputs—internal clock (NMSI) 20 16 0 0 sp18b sp19b SCC/SMC/SPI/I2C inputs—external clock (NMSI) 5 4 5 4 sp22 sp23 PIO/TIMER/IDMA inputs 10 8 3 3 Serial ClKin FCC input signals FCC output signals FCC output signals Note: When GFMR[TCI] = 1 Note: When GFMR[TCI] = 0 sp16b sp17b sp36b/sp37b sp36b/sp37b |
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