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AN2014 数据表(PDF) 40 Page - STMicroelectronics |
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AN2014 数据表(HTML) 40 Page - STMicroelectronics |
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40 / 65 page ![]() Software considerations AN2014 40/65 DocID10701 Rev 10 Figure 34. SPI data polling algorithm 1. Although ST EEPROM allow continuous read of the status register it is, for compatibility reasons, recommended to send each time the full RDSR command. MICROWIRE products In MICROWIRE products, the Data Output pin (Q) indicates the Ready/Busy status when the Chip Select pin (S) is driven High. Once the device is ready, the Q output goes high- impedance (Hi-Z) after a Start Condition. It is strongly recommended to not operate the Clock during the data polling sequence because as soon as the chip is ready, the logic will start to decode incoming bits. |
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