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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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PCA9570DP датащи(PDF) 5 Page - NXP Semiconductors |
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PCA9570DP датащи(HTML) 5 Page - NXP Semiconductors |
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5 / 32 page  PCA9570 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2014. All rights reserved. Product data sheet Rev. 4 — 17 September 2014 5 of 32 NXP Semiconductors PCA9570 Remote 4-bit general purpose outputs for 1 MHz I2C-bus 7. Functional description Refer to Figure 1 “Block diagram of PCA9570”. 7.1 Device address Following a START condition, the bus master must send the address of the slave it is accessing and the operation it wants to perform (read or write). The address of the PCA9570 is 48h as shown in Figure 6. 7.2 Software Reset Call, and device ID addresses Two other different addresses can be sent to the device. • General Call address: allows resetting the device through the I2C-bus upon reception of the right I2C-bus sequence. See Section 7.2.1 “Software Reset” for more information. • Device ID address: allows reading ID information from the device (manufacturer, part identification, revision). See Section 7.2.2 “Device ID (PCA9570 ID field)” for more information. Fig 6. PCA9570 device address R/W 002aag831 0 1 0 0 1 0 0 fixed slave address Fig 7. General Call address Fig 8. Device ID address 0 002aac115 0 0 0 0 0 0 0 R/W R/W 002aac116 1 1 1 1 1 0 0 |
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