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IO_SETUP датащи(PDF) 18 Page - Omron Electronics LLC |
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IO_SETUP датащи(HTML) 18 Page - Omron Electronics LLC |
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18 / 24 page ![]() [2SMPB-02E] Datasheet Rev.05(Jun.,2017) 18 Copyright 2017 OMRON Corporation. All Rights Reserved. (2) SPI timings All timings are applied both to 4- and 3-wire SPI. To reduce external noise in High-Z state, we recommend the following; ・In 4-wire mode, SDO terminal is pulled up to Vio via the resister. ・In 3-wire mode, SDI terminal is pulled up to Vio via the resister. e.g.) Rpullup = 3.6kΩ @Vio=1.8V. Items Symbol Condition min typ max Units Remark SCK frequency f_spi — — 10 MHz SCK low pulse t_low_sck 40 — — ns SCK high pulse t_high_sck 40 — — ns SDI setup time t_setup_sdi 20 — — ns SDI hold time t_hold_sdi 20 — — ns SDO output delay t_delay_sdo Cb=25pF,Vio=1.62V min — — 30 ns Cb=25pF,Vio=1.2V min — — 40 ns CSB setup time t_setup_csb 40 — — ns CSB hold time t_hold_csb 40 — — ns CSB_HI time t_csb_hi 100 — — ns |
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