4 2013-02-13 www.fritzing.org MPR121 Capacitive Touch Sensor Controller MPR121 QFN20 MPR121 QFN-20-0.4MM qfn-20-0.4mm sparkfun Touch Sensor qfn20 capacitive ADDR

ELE0

ELE1

ELE10_LED6

ELE11_LED7

ELE2

ELE3

ELE4_LED0

ELE5_LED1

ELE6_LED2

ELE7_LED3

ELE8_LED4

ELE9_LED5

REXT

SCL

SDA

VDD

VREG

VSS

~IRQ