KITMPR03XEVM Freescale Semiconductor, KITMPR03XEVM Datasheet - Page 22

• Manufacturer Part Number: KITMPR03XEVM
• Description: KIT EVAL FOR MPR03X
• Manufacturer: Freescale Semiconductor

Specifications of KITMPR03XEVM

• Sensor Type: Touch, Capacitive
• Interface: I²C
• Voltage - Supply: 1.71 V ~ 2.75 V
• Embedded: Yes, Other
• Utilized Ic / Part: MPR031
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Description/function: Proximity Sensor
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Sensitivity: -
• Sensing Range: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• For Use With/related Products: MPR031, MPR032

MPR03X
22
8.4.2
The Noise Half Delta register is used to set the Noise Half Delta for the third level filter. The address of the Noise Half Delta
Register is 0x27.
8.4.3
The Noise Count Limit register is used to set the Noise Count Limit for the Third Level Filter. The address of the Noise Half Delta
Register is 0x28.
Table 16. Noise Count Limit Register Field Descriptions
Table 15. Noise Half Delta Register Field Descriptions
Noise Half Delta Register
Noise Count Limit Register
Field
NCL
3:0
Reset:
Reset:
Field
NHD
5:0
W
W
R
R
7
0
0
7
0
0
Noise Count Limit – The Noise Count Limit determines the number of samples consecutively
greater than the Max Half Delta necessary before it can be determined that it is non-noise.
0000 Encoding 0 – Sets the Noise Count Limit to 1 (every time over Max Half Delta)
0001 Encoding 1 – Sets the Noise Count Limit to 2 consecutive samples over Max Half Delta
~
1111 Encoding 15 – Sets the Noise Count Limit to 15 consecutive samples over Max Half Delta
= Unimplemented
= Unimplemented
Noise Half Delta – The Noise Half Delta determines the incremental change when
non-noise drift is detected.
000000 DO NOT USE THIS CODE
000001 Encoding 1 – Sets the Noise Half Delta to 1
~
111111 Encoding 63 – Sets the Noise Half Delta to 63
6
0
0
6
0
0
Figure 29. Noise Count Limit Register
Figure 28. Noise Half Delta Register
5
0
5
0
0
4
0
4
0
0
Description
Description
3
0
3
0
NHD
2
0
2
0
NCL
1
0
1
0
Freescale Semiconductor
0
0
0
0
Sensors