Data Sheet

MPR121 Sensor
8 Freescale Semiconductor
REGISTER DESCRIPTION
Table 1. Register Map
REGISTER
Fields
Register
Address
Initial
Value
Auto
Increment
Address
ELE0 - ELE7 Touch Status
E7TS
E6TS
E5TS
E4TS
E3TS
E2TS
E1TS
E0TS
0x00
0x00
Register
Address + 1
ELE8 - ELE11, ELEPROX Touch Status
OVCF
E12TS
E11TS
E10TS
E9TS
E8TS
0x01
0x00
ELE0 - ELE7 OOR Status
E7OOR
E6OOR
E5OOR
E4OOR
E3OOR
E2OOR
E1OOR
E0OOR
0x02
0x00
ELE8 - ELE11, ELEPROX OOR Status
ARFF
ACFF
E12OOR
E11OOR
E10OOR
E9OOR
E8OOR
0x03
0x00
ELE0 Electrode Filtered Data LSB
E0FDL
0x04
0x00
ELE0 Electrode Filtered Data MSB
E0FDH
0x05
0x00
ELE1 Electrode Filtered Data LSB
E1FDL
0x06
0x00
ELE1 Electrode Filtered Data MSB
E1FDH
0x07
0x00
ELE2 Electrode Filtered Data LSB
E2FDL
0x08
0x00
ELE2 Electrode Filtered Data MSB
E2FDH
0x09
0x00
ELE3 Electrode Filtered Data LSB
E3FDL
0x0A
0x00
ELE3 Electrode Filtered Data MSB
E3FDH
0x0B
0x00
ELE4 Electrode Filtered Data LSB
E4FDL
0x0C
0x00
ELE4 Electrode Filtered Data MSB
E4FDH
0x0D
0x00
ELE5 Electrode Filtered Data LSB
E5FDL
0x0E
0x00
ELE5 Electrode Filtered Data MSB
E5FDH
0x0F
0x00
ELE6 Electrode Filtered Data LSB
E6FDL
0x10
0x00
ELE6 Electrode Filtered Data MSB
E6FDH
0x11
0x00
ELE7 Electrode Filtered Data LSB
E7FDL
0x12
0x00
ELE7 Electrode Filtered Data MSB
E7FDH
0x13
0x00
ELE8 Electrode Filtered Data LSB
E8FDL
0x14
0x00
ELE8 Electrode Filtered Data MSB
E8FDH
0x15
0x00
ELE9 Electrode Filtered Data LSB
E9FDL
0x16
0x00
ELE9 Electrode Filtered Data MSB
E9FDH
0x17
0x00
ELE10 Electrode Filtered Data LSB
E10FDL
0x18
0x00
ELE10 Electrode Filtered Data MSB
E10FDH
0x19
0x00
ELE11 Electrode Filtered Data LSB
E11FDL
0x1A
0x00
ELE11 Electrode Filtered Data MSB
E11FDH
0x1B
0x00
ELEPROX Electrode Filtered Data LSB
E12FDL
0x1C
0x00
ELEPROX Electrode Filtered Data MSB
E12FDH
0x1D
0x00
ELE0 Baseline Value
E0BV
0x1E
0x00
ELE1 Baseline Value
E1BV
0x1F
0x00
ELE2 Baseline Value
E2BV
0x20
0x00
ELE3 Baseline Value
E3BV
0x21
0x00
ELE4 Baseline Value
E4BV
0x22
0x00
ELE5 Baseline Value
E5BV
0x23
0x00
ELE6 Baseline Value
E6BV
0x24
0x00
ELE7 Baseline Value
E7BV
0x25
0x00
ELE8 Baseline Value
E8BV
0x26
0x00
ELE9 Baseline Value
E9BV
0x27
0x00
ELE10 Baseline Value
E10BV
0x28
0x00
ELE11 Baseline Value
E11BV
0x29
0x00
ELEPROX Baseline Value
E12BV
0x2A
0x00
MHD Rising
MHDR
0x2B
0x00
NHD Rising
NHDR
0x2C
0x00
NCL Rising
NCLR
0x2D
0x00
FDL Rising
FDLR
0x2E
0x00
MHD Falling
MHDF
0x2F
0x00
NHD Falling
NHDF
0x30
0x00