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SX8661 Datasheet(PDF) 38 Page - Semtech Corporation |
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SX8661 Datasheet(HTML) 38 Page - Semtech Corporation |
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38 / 88 page  ADVANCED COMMUNICATIONS & SENSING DATASHEET Revision v3.2, January 2011 © 2011 Semtech Corp. www.semtech.com 38 SX8661 Low Power, Capacitive Button Touch and Proximity Controller (8 sensors) with LED Drivers and Analog Output Figure 42 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 43 shows a simplified diagram of the INTB pin. Figure 43 Simplified diagram of INTB SX8661 ASI CP VANA CN VANA VDD R_INT INTB SX8661 INT to host |
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