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SX8661 датащи(PDF) 29 Page - Semtech Corporation |
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SX8661 датащи(HTML) 29 Page - Semtech Corporation |
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29 / 88 page ![]() ADVANCED COMMUNICATIONS & SENSING DATASHEET Revision v3.2, January 2011 © 2011 Semtech Corp. www.semtech.com 29 SX8661 Low Power, Capacitive Button Touch and Proximity Controller (8 sensors) with LED Drivers and Analog Output During the power on period the SX8661 stabilizes the internal regulators, RC clocks and the firmware initializes all registers. During the power up the SX8661 is not accessible and I2C communications are forbidden. As soon as the INTB rises the SX8661 will be ready for I2C communication. 3.17.2 RESETB When RESETB is driven low the SX8661 will reset and start the power up sequence as soon as RESETB is driven high or pulled high. In case the user does not require a hardware reset control pin then the RESETB pin can be connected to VDD. Figure 26 Hardware Reset 3.17.3 Software Reset To perform a software reset the host needs to write 0xDE followed by 0x00 at the SoftReset register at address 0xB1. Figure 27 Software Reset |
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