stmpe16m31px STMicroelectronics, stmpe16m31px Datasheet - Page 66

• Manufacturer Part Number: stmpe16m31px
• Description: S-touch? 16/24-channel Touchkey Controller With Proximity Sensing
• Manufacturer: STMicroelectronics

Touchkey and proximity sensing controller
Bit 23-16 (0xB6)
PROX_CFG
Address:
Type:
Reset:
Description:
66/82
R/W
R/W
S23
7
0
7
0
DITHERING
[7:0] S-X
[7:6] DITHERING FACTOR
[4:2] Proximity calibration interval:
[1:0] Access mode:
[5] Reserved
R/W
R/W
S22
6
0
Read ‘1’ if the corresponding sensor channel status is ‘touched’
6
0
00 - 4x
01 -8x
10 -16x
11-32x
The higher the dithering factor, the more sensitive the proximity sensing is. However, the speed
will be slower.
000-1
001-2
010-4
011-8
100-16
Others: reserved
Controls the number of dithered impedance sampling between successive calibrations. Shorter
calibration interval allows it to adapts quickly to changes in environmental factors, but reduces
the sensitivity to slowly approaching hand.
00-dithered impedance
01- calibrated dithered impedance
others: reserved
0x96
RW
0x00
Proximity configuration register.
RESERVED
RW/
R/W
S21
5
0
5
0
Doc ID 17058 Rev 1
R/W
R/W
S20
PROXIMITY CALIBRATION INTERVAL
4
0
4
0
R/W
R/W
S19
3
0
3
0
Proximity configuration register
STMPE16M31PX, STMPE24M31PX
R/W
R/W
S18
2
0
2
0
R/W
R/W
S17
1
0
1
0
ACCESS MODE
R/W
R/W
S16
0
0
0
0