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AN2014 数据表(PDF) 32 Page - STMicroelectronics |
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AN2014 数据表(HTML) 32 Page - STMicroelectronics |
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32 / 65 page ![]() Hardware considerations AN2014 32/65 DocID10701 Rev 10 Figure 26. Recommended SPI connections - safe design Figure 27. Recommended SPI connections - robust design 1. Q must be connected either to RPD or RPU. Table 7. Calculation for external pull-up and pull-down resistors in SPI products EEPROM input pins (S, W, HOLD, C, D) EEPROM output pin Q RPD RPD > VIH EEPROM / IOH master RPD > VIH master / IOH EEPROM RPU RPU > (VCC −VIL EEPROM) / IOL master RPU > (VCC −VIL master) / IOL EEPROM |
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