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SX8663 датащи(PDF) 31 Page - Semtech Corporation |
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SX8663 датащи(HTML) 31 Page - Semtech Corporation |
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31 / 64 page ![]() ADVANCED COMMUNICATIONS & SENSING Rev5 4 th August 2011 © 2011 Semtech Corp. www.semtech.com 31 SX8663 Capacitive Button Matrix (up to 36) and Proximity Controller with Individual LED Drivers and Buzzer Output Figure 35 Simplified diagram of CN and CP 4.3 Host interface pins The host interface consists of the interrupt pin INTB, a reset pin RESETB and the standard I2C pins: SCL and SDA. INTB The INTB pin is an open drain output that requires an external pull-up resistor (1..10 kOhm). The INTB pin is protected to VDD using dedicated devices. The INTB pin has diode protected to GROUND. Figure 36 shows a simplified diagram of the INTB pin. Figure 36 Simplified diagram of INTB SX8663 ASI CP VANA CN VANA VDD R_INT INTB SX8663 INT to host |
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