MPR031EPR2 Freescale Semiconductor, MPR031EPR2 Datasheet - Page 13

• Manufacturer Part Number: MPR031EPR2
• Description: IC CTLR TOUCH SENSOR 8-DFN
• Manufacturer: Freescale Semiconductor
• Type: Capacitiver

Specifications of MPR031EPR2

• Touch Panel Interface: 2-Wire
• Data Interface: I²C, Serial
• Data Rate/sampling Rate (sps, Bps): 400k
• Voltage - Supply: 1.71 V ~ 2.75 V
• Current - Supply: 43µA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-UDFN
• Output Type: Logic
• Interface: I²C
• Input Type: Logic
• Supply Voltage: 1.8 V
• Output Voltage: 0.5 V
• Supply Current: 8µA
• Ic Interface Type: I2C
• Supply Voltage Range: 1.71V To 2.75V
• Sensor Case Style: µDFN
• No. Of Pins: 8
• Operating Temperature Range: -40°C To +85°C
• Interface Type: I2C
• Rohs Compliant: Yes
• For Use With: KITMPR03XEVM - KIT EVAL FOR MPR03XDEMOMPR031 - BOARD DEMO FOR MPR031 CTLR
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: MPR031EPR2TR

Sensors
Freescale Semiconductor
5.3
Each electrode has an associated filtered output. This output is generated through register settings and a low pass filter
implementation
5.3.1
The Filtered Data Low register contains the data on each of the electrodes. It is paired with the Filtered Data High register for
reading the 10 bit A/D value. The address of the ELE0 Filtered Data Low register is 0x02. The address of the ELE1 Filtered Data
Low register is 0x04. The address of the ELE2 Filtered Data Low register is 0x06.
5.3.2
The Filtered Data High register contains the data on each of the electrodes. It is paired with the Filtered Data Low register for
reading the 10 bit A/D value. The address of the ELE0 Filtered Data High register is 0x03. The address of the ELE1 Filtered Data
High register is 0x05. The address of the ELE2 Filtered Data High register is 0x07.
Table 7. Filtered Data Low Register Field Descriptions
Table 8. Filtered Data High Register Field Descriptions
Filtered Data
Filtered Data Low Register
Filtered Data High Register
(Section
Reset:
Reset:
FDHB
FDLB
Field
Field
7:0
7:0
W
W
R
R
8.4).
7
0
7
0
0
= Unimplemented
= Unimplemented
Filtered Data Low Byte – The Filtered Data Low Byte displays the lower 8 bits of
the 10 bit filtered A/D reading.
00000000 Encoding 0
~
11111111 Encoding 255
Filtered Data High Bits – The Filtered Data High Bits displays the higher 2 bits of
the 10 bit filtered A/D reading.
00 Encoding 0
~
11 Encoding 3
6
0
6
0
0
Figure 19. Filtered Data High Register
Figure 18. Filtered Data Low Register
5
0
5
0
0
4
0
4
0
0
FDLB
Description
Description
3
0
3
0
0
2
0
2
0
0
1
0
1
0
FDHB
0
0
0
0
MPR03X
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