Data Sheet

MPR121 Sensor
9 Freescale Semiconductor
Table 1. Register Map
REGISTER
Fields
Register
Address
Initial
Value
Auto
Increment
Address
NCL Falling
NCLF
0x31
0x00
Register
Address + 1
FDL Falling
FDLF
0x32
0x00
NHD Touched
NHDT
0x33
0x00
NCL Touched
NCLT
0x34
0x00
FDL Touched
FDLT
0x35
0x00
ELEPROX MHD Rising
MHDPROXR
0x36
0x00
ELEPROX NHD Rising
NHDPROXR
0x37
0x00
ELEPROX NCL Rising
NCLPROXR
0x38
0x00
ELEPROX FDL Rising
FDLPROXR
0x39
0x00
ELEPROX MHD Falling
MHDPROXF
0x3A
0x00
ELEPROX NHD Falling
NHDPROXF
0x3B
0x00
ELEPROX NCL Falling
NCLPROXF
0x3C
0x00
ELEPROX FDL Falling
FDLPROXF
0x3D
0x00
ELEPROX NHD Touched
NHDPROXT
0x3E
0x00
ELEPROX NCL Touched
NCLPROXT
0x3F
0x00
ELEPROX FDL Touched
FDLPROXT
0x40
0x00
ELE0 Touch Threshold
E0TTH
0x41
0x00
ELE0 Release Threshold
E0RTH
0x42
0x00
ELE1 Touch Threshold
E1TTH
0x43
0x00
ELE1 Release Threshold
E1RTH
0x44
0x00
ELE2 Touch Threshold
E2TTH
0x45
0x00
ELE2 Release Threshold
E2RTH
0x46
0x00
ELE3 Touch Threshold
E3TTH
0x47
0x00
ELE3 Release Threshold
E3RTH
0x48
0x00
ELE4 Touch Threshold
E4TTH
0x49
0x00
ELE4 Release Threshold
E4RTH
0x4A
0x00
ELE5 Touch Threshold
E5TTH
0x4B
0x00
ELE5 Release Threshold
E5RTH
0x4C
0x00
ELE6 Touch Threshold
E6TTH
0x4D
0x00
ELE6 Release Threshold
E6RTH
0x4E
0x00
ELE7 Touch Threshold
E7TTH
0x4F
0x00
ELE7 Release Threshold
E7RTH
0x50
0x00
ELE8 Touch Threshold
E8TTH
0x51
0x00
ELE8 Release Threshold
E8RTH
0x52
0x00
ELE9 Touch Threshold
E9TTH
0x53
0x00
ELE9 Release Threshold
E9RTH
0x54
0x00
ELE10 Touch Threshold
E10TTH
0x55
0x00
ELE10 Release Threshold
E10RTH
0x56
0x00
ELE11 Touch Threshold
E11TTH
0x57
0x00
ELE11 Release Threshold
E11RTH
0x58
0x00
ELEPROX Touch Threshold
E12TTH
0x59
0x00
ELEPROX Release Threshold
E12RTH
0x5A
0x00
Debounce Touch & Release
DR
DT
0x5B
0x00
AFE Configuration 1
FFI
CDC
0x5C
0x10
AFE Configuration 2
CDT
SFI
ESI
0x5D
0x24
Electrode Configuration(ECR)
CL
ELEPROX
ELE
0x5E
0x00
ELE0 Electrode Current
CDC0
0x5F
0x00
ELE1 Electrode Current
CDC1
0x60
0x00
ELE2 Electrode Current
CDC2
0x61
0x00