Data Sheet

MPR121 Sensor
19 Freescale Semiconductor
Write a bit with “1” to the GPIO Data Set Register, GPIO Data Clear Register, and GPIO Data Toggle Register will
set/clear/toggle contents of the corresponding DAT bit in Data Register. Write “0” has no meaning. Using of those registers
allows any individual port(s) to be able individually set, cleared, or toggled without affecting other ports. Reading those register
returns as same as GPIO Data Register reading.
15. Software Reset Register (0x80)
Write 0x80 with 0x63 asserts soft reset. The soft reset doesn’t affect I
2
C module, but all others reset as same as POR.