MPR031EPR2 Freescale Semiconductor, MPR031EPR2 Datasheet - Page 14

• 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

MPR03X
14
5.4
In addition to the second level filter data, the data from the baseline filter (or third level filter) is also displayed. In this case, the
least two significant bits are removed before the 10-bit value is displayed in the register.
5.4.1
The Baseline Value register contains the third level filtered data on each of the electrodes. It is a truncated 10 bit A/D value
displayed in the 8 bit register. The address of the ELE0 Baseline Value register is 0x1A. The address of the ELE1 Baseline Value
register is 0x1B. The address of the ELE2 Baseline Value register is 0x1C.
Table 9. Filtered Data High Register Field Descriptions
Baseline Values
Baseline Value Register
Reset:
Field
7:0
BV
W
R
7
0
= Unimplemented
Baseline Value – The Baseline Value byte displays the higher 8 bits of the 10 bit
baseline value.
00000000 Encoding 0 – The 10 bit baseline value is between 0 and 3.
~
11111111 Encoding 255 – The 10 bit baseline value is between 1020 and 1023.
6
0
Figure 20. Filtered Data High Register
5
0
4
0
BV
Description
3
0
2
0
1
0
Freescale Semiconductor
0
0
Sensors