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ADBMS1818ASWAZ-R7 데이터시트(PDF) 10 Page - Analog Devices |
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ADBMS1818ASWAZ-R7 데이터시트(HTML) 10 Page - Analog Devices |
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10 / 92 page ![]() Data Sheet ADBMS1818 SPECIFICATIONS analog.com Rev. B | 10 of 92 ISOSPI TIMING SPECIFICATIONS See Figure 86. Table 10. Parameter Test Conditions/Comments Min Typ Max Units SCK Falling Edge to SDO Valid (t8)1 Apply over the full specified temperature range 60 ns SCK Rising Edge to Short ±1 Transmit (t9) Apply over the full specified temperature range 50 ns CSB Transition to Long ±1 Transmit (t10) Apply over the full specified temperature range 60 ns CSB Rising Edge to SDO Rising (t11) 1 Apply over the full specified temperature range 200 ns Data Return Delay (tRTN) Apply over the full specified temperature range 325 375 425 ns Chip-Select Daisy-Chain Delay (tDSY(CS)) Apply over the full specified temperature range 120 180 ns Data Daisy-Chain Delay (tDSY(D)) Apply over the full specified temperature range 200 250 300 ns Data Daisy-Chain Lag (vs. Chip Select) (tLAG) = (tDSY(D) + t1/2PW(D)) – (tDSY(CS) + t1/2PW(CS)), apply over the full specified temperature range 0 35 70 ns Chip Select High to Low Pulse Governor (t5(GOV)) Apply over the full specified temperature range 0.6 0.82 µs Data to Chip-Select Pulse Governor (t6(GOV)) Apply over the full specified temperature range 0.8 1.05 µs isoSPI Port Reversal Blocking tBLOCK Window Apply over the full specified temperature range 2 10 µs 1 These specifications do not include rise or fall time of SDO. Although fall time (typically 5 ns due to the internal pull-down transistor) is not a concern, the rising edge transition time (tRISE) is dependent on the pull-up resistance and load capacitance on the SDO pin. The time constant must be chosen such that SDO meets the setup time requirements of the microcontroller unit (MCU). |
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