NXP Semiconductors KL25 Series - Freescale Semiconductor, Inc

Table 42-13. Signal properties in single noise modes (1,2) (continued)
Name Function I/O type Power up /
reset
DVOLT[1:0],
EXTCHRG[2:1]
In this operation mode these 4 bits are used select the noise
threshold.
0000 - DVpm = 0.038 V, Vp = 0.834 V, Vm = 0.796 V
0001 - DVpm = 0.050 V, Vp = 0.830 V, Vm = 0.790 V
0010 - DVpm = 0.066 V, Vp = 0.848 V, Vm = 0.782 V
0011 - DVpm = 0.087 V, Vp = 0.858 V, Vm = 0.772 V
0100 - DVpm = 0.114 V, Vp = 0.872 V, Vm = 0.758 V
0101 - DVpm = 0.150 V, Vp = 0.890 V, Vm = 0.740 V
0110 - DVpm = 0.197 V, Vp = 0.914 V, Vm = 0.716 V
0111 - DVpm = 0.260 V, Vp = 0.945 V, Vm = 0.685 V
1000 - DVpm = 0.342 V, Vp = 0.986 V, Vm = 0.644 V
1001 - DVpm = 0.450 V, Vp = 1.040 V, Vm = 0.590 V
1010 - DVpm = 0.592 V, Vp = 1.111 V, Vm = 0.519 V
1011 - DVpm = 0.780 V, Vp = 1.205 V, Vm = 0.425 V
1100 - DVpm = 1.026 V, Vp = 1.328 V, Vm = 0.302 V
1101 - DVpm = 1.350 V, Vp = 1.490 V, Vm = 0.140 V
1110 - DVpm = 1.630 V, Vp = 1.630 V, Vm = 0 V
1111 - DVpm = 1.630 V, Vp = 1.630 V, Vm = 0 V
I XXXX
EXTCHRG[0] In this operation mode this bits selects the series resistance.
0 - uses Rs = 32 kΩ.
1- uses Rs = 187 kΩ.
Independent of this bit selection the threshold 15 is done with Rs =
5.5 kΩ.
I XX
Chapter 42 Touch Sensing Input (TSI)
KL25 Sub-Family Reference Manual, Rev. 3, September 2012
Freescale Semiconductor, Inc. 805