stmpe16m31 STMicroelectronics, stmpe16m31 Datasheet - Page 48

• Manufacturer Part Number: stmpe16m31
• Description: S-touch? 16/24-channel Touchkey Controller With Pwm And Ratio Engines
• Manufacturer: STMicroelectronics

Touch sensor controller
13
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Touch sensor controller
The STMPE16M31 and STMPE24M31 devices use the STMicroelectronics’ patent pending
capacitive front end. The capacitive sensor is configure by the following registers:
Table 13.
0xC0-0xEF
Address
0x7C
0x70
0x71
0x72
0x76
0x77
0x78
Touch sensor controller registers
RATIO_ENG_REPT
CH_SEN_CTRL
Register Name
DATA_TYPE
CH_DATA-n
CAL_MOD
MAF_SET
CAL_INT
CH_SEL
_CTRL
Doc ID 16174 Rev 3
Reset Value
0x00000000
0x0000
0x00
0x00
0x00
0x00
0x00
0x00
R/W
R/W
RW
RW
RW
RW
RW
RW
RW
Capacitive sensor control
Ratio engine report control
(only available in final silicon)
Selects active capacitive channels
10mS – 64S calibration interval
Selects calibration model
Median averaging filter (MAF) setting
Selects type of data available in
channel data ports.
0x01: TVR
0x02: EVR
0x03: Channel delay
0x04: Impedance (13-bit)
0x05: Calibrated impedance (13-bit)
0x06: Locked impedance (13-bit)
Channel data based on channel data
type
STMPE16M31, STMPE24M31
Description