MPR121QR2 Freescale Semiconductor, MPR121QR2 Datasheet - Page 6

• Manufacturer Part Number: MPR121QR2
• Description: IC CTLR TOUCH SENSOR 20-QFN
• Manufacturer: Freescale Semiconductor
• Type: Capacitive, Proximity Sensorr

Specifications of MPR121QR2

• Number Of Inputs/keys: 12 Key
• Data Interface: I²C, Serial
• Voltage - Supply: 1.71 V ~ 3.6 V
• Current - Supply: 29µA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-UQFN, 20-µQFN
• Output Type: Logic
• Interface: I²C
• Input Type: Logic
• Supply Voltage: 2.5 V to 3.6 V
• Dimensions: 3 mm L x 3 mm W x 0.65 mm H
• Temperature Range: - 40 C to + 85 C
• Termination Style: SMD/SMT
• Supply Current: 29µA
• Ic Interface Type: I2C
• Supply Voltage Range: 1.71V To 3.6V
• Sensor Case Style: QFN
• No. Of Pins: 20
• Operating Temperature Range: -40°C To +85°C
• Interface Type: I2C
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: MPR121QR2; MPR121QR2TR

MPR121
6
Table 1. Register Map
NCL Falling
FDL Falling
NHD Amount Touched
NCL Touched
FDL Touched
ELEPROX MHD Rising
ELEPROX NHD Amount Rising
ELEPROX NCL Rising
ELEPROX FDL Rising
ELEPROX MHD Falling
ELEPROX NHD Amount Falling
ELEPROX NCL Falling
ELEPROX FDL Falling
ELEPROX NHD Amount Touched
ELEPROX NCL Touched
ELEPROX FDL Touched
ELE0 Touch Threshold
ELE0 Release Threshold
ELE1 Touch Threshold
ELE1 Release Threshold
ELE2 Touch Threshold
ELE2 Release Threshold
ELE3 Touch Threshold
ELE3 Release Threshold
ELE4 Touch Threshold
ELE4 Release Threshold
ELE5 Touch Threshold
ELE5 Release Threshold
ELE6 Touch Threshold
ELE6 Release Threshold
ELE7 Touch Threshold
ELE7 Release Threshold
ELE8 Touch Threshold
ELE8 Release Threshold
ELE9 Touch Threshold
ELE9 Release Threshold
ELE10 Touch Threshold
ELE10 Release Threshold
ELE11 Touch Threshold
ELE11 Release Threshold
ELEPROX Touch Threshold
ELEPROX Release Threshold
Debounce Touch & Release
AFE Configuration
Filter Configuration
Electrode Configuration
ELE0 Electrode Current
ELE1 Electrode Current
ELE2 Electrode Current
REGISTER
FFI
CL
CDT
DR
EL
NCLPROXR
EPROXRTH
FDLPROXR
NCLPROXF
FDLPROXF
NCLPROXT
FDLPROXT
EPROXTTH
E10TTH
E10RTH
E11TTH
E11RTH
E0RTH
E1RTH
E2RTH
E3RTH
E4RTH
E5RTH
E6RTH
E7RTH
E8RTH
E9RTH
E0TTH
E1TTH
E2TTH
E3TTH
E4TTH
E5TTH
E6TTH
E7TTH
E8TTH
E9TTH
Fields
NCLF
FDLF
NCLT
FDLT
SFI
MHDPROXR
NHDPROXR
MHDPROXF
NHDPROXF
NHDPROXT
NHDT
CDC0
CDC1
CDC2
CDC
EleEn
ESI
DT
Freescale Semiconductor
Register
Address
0x3A
0x3B
0x3C
0x3D
0x3E
0x3F
0x4A
0x4B
0x4C
0x4D
0x4E
0x4F
0x5A
0x5B
0x5C
0x5D
0x5E
0x5F
0x31
0x32
0x33
0x34
0x35
0x36
0x37
0x38
0x39
0x40
0x41
0x42
0x43
0x44
0x45
0x46
0x47
0x48
0x49
0x50
0x51
0x52
0x53
0x54
0x55
0x56
0x57
0x58
0x59
0x60
0x61
Value
Initial
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x10
0x04
0x00
0x00
0x00
0x00
Sensors
Address + 1
Increment
Address
Register
Auto