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PCA9502 датащи(PDF) 10 Page - NXP Semiconductors |
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PCA9502 датащи(HTML) 10 Page - NXP Semiconductors |
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10 / 25 page ![]() PCA9502_3 © NXP B.V. 2006. All rights reserved. Product data sheet Rev. 03 — 13 October 2006 10 of 25 NXP Semiconductors PCA9502 8-bit I/O expander with I2C-bus/SPI interface Fig 9. I2C-bus data formats 002aab458 DATA SLAVE ADDRESS master write: S W A DATA A A P data transferred (n bytes + acknowledge) START condition STOP condition acknowledge acknowledge acknowledge write DATA SLAVE ADDRESS master read: S R A DATA A NA P data transferred (n bytes + acknowledge) START condition STOP condition acknowledge acknowledge not acknowledge read DATA SLAVE ADDRESS combined formats: S R/W A DATA A A P data transferred (n bytes + acknowledge) START condition STOP condition acknowledge acknowledge acknowledge read or write SLAVE ADDRESS Sr R/W A repeated START condition acknowledge read or write direction of transfer may change at this point data transferred (n bytes + acknowledge) |
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