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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AS3911 датащи(PDF) 44 Page - ams AG |
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AS3911 датащи(HTML) 44 Page - ams AG |
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44 / 149 page  AS3911 – 44 ams Datasheet, Confidential: 2013-Oct [2-03] A p pl i c at io n I n f o r m at i o n SPI Timing Figure 30: SPI Timing Figure 31: SPI General Timing Symbol Parameter Min Typ Max Unit Notes General Timing (VDD = VDD_IO = VDD_D = 3.3 V, Temperature 25°C) TSCLK SCLK period 100 ns TSCLK=TSCLKL+TSCLKH, use of shorter SCLK period may lead to incorrect operation of FIFO TSCLKL SCLK low 40 ns TSCLKH SCLK high 40 ns TSSH SPI reset (/SS high) 100 ns TNCSL /SS falling to SCLK rising 25 ns First SCLK pulse TNCSH SCLK falling to /SS rising 25 (tbd) ns Last SCLK pulse TDIS Data in setup time 10 ns TDIH Data in hold time 10 ns Read Timing (VDD = VDD_IO = VDD_D = 3.3 V, Temperature 25°C, CLOAD ≤50 pF) TDOD Data out delay 20 ns TDOHZ Data out to high impedance delay 20 ns ... ... ... DATAI DATAI DATAI ... tSCLKH tNCSL tSCLKL tDIS tDIH tNCSH /SS MOSI MISO SCLK |
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