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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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DS0147 датащи(PDF) 65 Page - Microchip Technology |
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DS0147 датащи(HTML) 65 Page - Microchip Technology |
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65 / 128 page  Condition Unit VDD = 1.05 V –1 VDD = 1.05 V STD VDD= 1.0 V –1 VDD= 1.0 V ST- D Symbol Parameter HSIO without bridging ps 20 30 20 30 FSKEWB High-speed I/ O clock skew 1 HSIO with bridging ps See table HSI- O Clock Skew with Bridging. FSKEWB GPIO without bridging ps 35 45 35 45 FSKEWB GPIO with bridging ps 60 75 60 75 FSKEWB HSIO without bridging ps 90 90 90 90 TDCB High-speed I/ O clock duty cycle distor- tion 2 HSIO with bridging ps 115 115 115 115 TDCB GPIO without bridging ps 90 90 90 90 TDCB GPIO with bridging ps 115 115 115 115 TDCB 1. FSKEWB is the worst-case clock-tree skew observable between sequential I/O elements. Clock-tree skew is significantly smaller at I/O registers close to each other because they are fed by the same or adjacent clock-tree branches. Use the Microsemi Timing Analyzer tool to evaluate clock skew specific to the design. 2. Parameters listed in this table correspond to the worst-case duty cycle distortion observable at the I/O flip flops. IBIS should be used to calculate any additional duty cycle distortion that might be caused by asymmetrical rise/fall times for any I/O standard. The following table describes high-speed I/O clock skew (FSKEWB) with bridging from –40 °C to 100 °C. Note: FSKEWB is the worst-case clock-tree skew observable between sequential I/O elements. Clock-tree skew is significantly smaller at I/O registers close to each other and fed by the same or adjacent clock-tree branches. Use the Microsemi Timing Analyzer tool to evaluate clock skew specific to the design. Table 73 • HSIO Clock Skew with Bridging (–40 °C to 100 °C) Unit VDD = 1.05 V –1 VDD = 1.05 V STD VDD= 1.0 V –1 VDD= 1.0 V ST- D Bridging S- ource Total I/O B- anks Device ps 80 120 80 120 NNW 1 2 MPF100T ps 70 110 70 110 NNE 2 2 ps 80 120 80 120 NNW 1 2 MPF200T ps 70 110 70 110 NNE 2 2 ps 80 120 80 120 NNW 1 3 MPF300T ps 200 280 200 280 NNE 2 3 61 Microsemi Proprietary and Confidential. DS0147 Revision 1.0 AC Switching Characteristics |
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