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AM186EM-33VC/W 数据表(PDF) 93 Page - Advanced Micro Devices |
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AM186EM-33VC/W 数据表(HTML) 93 Page - Advanced Micro Devices |
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93 / 98 page  Am186/188EM and Am186/188EMLV Microcontrollers 93 P R E L IMINAR Y SWITCHING CHARACTERISTICS over COMMERCIAL operating range Synchronous Serial Interface (SSI) (20 MHz and 25 MHz) Note: All timing parameters are measured at 1.5 V with 50 pF loading on CLKOUTA unless otherwise noted. All output test conditions are with CL = 50 pF. For switching tests, VIL = 0.45 V and VIH = 2.4 V, except at X1 where VIH = VCC – 0.5 V. Synchronous Serial Interface (SSI) (33 MHz and 40 MHz) Note: All timing parameters are measured at 1.5 V with 50 pF loading on CLKOUTA unless otherwise noted. All output test conditions are with CL = 50 pF. For switching tests, VIL = 0.45 V and VIH = 2.4 V, except at X1 where VIH = VCC – 0.5 V. Preliminary Parameter 20 MHz 25 MHz No. Symbol Description Min Max Min Max Unit Synchronous Serial Port Timing Requirements 75 tDVSH Data Valid to SCLK High 10 10 ns 77 tSHDX SCLK High to SPI Data Hold 3 3 ns Synchronous Serial Port Timing Responses 71 tCLEV CLKOUTA Low to SDEN Valid 25 20 ns 72 tCLSL CLKOUTA Low to SCLK Low 25 20 ns 78 tSLDV SCLK Low to Data Valid 25 20 ns Preliminary Parameter 33 MHz 40 MHz No. Symbol Description Min Max Min Max Unit Synchronous Serial Port Timing Requirements 75 tDVSH Data Valid to SCLK High 8 5 ns 77 tSHDX SCLK High to SPI Data Hold 2 2 ns Synchronous Serial Port Timing Responses 71 tCLEV CLKOUTA Low to SDEN Valid 0 15 0 12 ns 72 tCLSL CLKOUTA Low to SCLK Low 0 15 0 12 ns 78 tSLDV SCLK Low to Data Valid 0 15 0 12 ns |
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