Datasheet
Table Of Contents
- Proximity Capacitive Touch Sensor Controller
- 1 Pin Descriptions
- 2 Schematic Drawings and Implementation
- 3 Device Operation Overview
- 4 Electrical Characteristics
- 5 Register Operation Descriptions
- 5.1 Register Read/Write Operations and Measurement Run/Stop Mode
- 5.2 Touch Status Registers (0x00~0x01)
- 5.3 Electrode Filtered Data Register (0x04~0x1D)
- 5.4 Baseline Value Register (0x1E~0x2A)
- 5.5 Baseline Filtering Control Register (0x2B~0x40)
- 5.6 Touch / Release Threshold (0x41~0x5A)
- 5.7 Debounce Register (0x5B)
- 5.8 Filter and Global CDC CDT Configuration (0x5C, 0x5D)
- 5.9 Electrode Charge Current Register (0x5F~0x6B)
- 5.10 Electrode Charge Time Register (0x6C~0x72)
- 5.11 Electrode Configuration Register (ECR, 0x5E)
- 5.12 Out-Of-Range Status Registers (0x02, 0x03)
- 5.13 Soft Rest Register (0x80)
- 5.14 GPIO Registers (0x73~0x7A)
- 6 MPR121 Serial Communication
- Disclaimer
MPR121
Sensors
6 Freescale Semiconductor, Inc.
NCL Falling NCLF 0x31 0x00
Register
Address + 1
FDL Falling FDLF 0x32 0x00
NHD Amount Touched NHDT 0x33 0x00
NCL Touched NCLT 0x34 0x00
FDL Touched FDLT 0x35 0x00
ELEPROX MHD Rising MHDPROXR 0x36 0x00
ELEPROX NHD Amount Rising NHDPROXR 0x37 0x00
ELEPROX NCL Rising NCLPROXR 0x38 0x00
ELEPROX FDL Rising FDLPROXR 0x39 0x00
ELEPROX MHD Falling MHDPROXF 0x3A 0x00
ELEPROX NHD Amount Falling NHDPROXF 0x3B 0x00
ELEPROX NCL Falling NCLPROXF 0x3C 0x00
ELEPROX FDL Falling FDLPROXF 0x3D 0x00
ELEPROX NHD Amount 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 EPROXTTH 0x59 0x00
ELEPROX Release Threshold EPROXRTH 0x5A 0x00
Debounce Touch & Release DR DT 0x5B 0x00
Filter/Global CDC Configuration FFI CDC 0x5C 0x10
Filter/Global CDT Configuration CDT SFI ESI 0x5D 0x24
Electrode Configuration CL ELEPROX_EN ELE_EN 0x5E 0x00
ELE0 Electrode Current CDC0 0x5F 0x00
ELE1 Electrode Current CDC1 0x60 0x00
ELE2 Electrode Current CDC2 0x61 0x00
Table 2. Register Map
REGISTER Fields
Register
Address
Initial
Value
Auto-
Increment
Address