QST608 ST Microelectronics, QST608 Datasheet - Page 19

• Manufacturer Part Number: QST608
• Description: Capacitive touch sensor device
• Manufacturer: ST Microelectronics

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QST608
Note:
1
2
3
4
Table 4.
See
The value is a signed character (0x80...0x7F <=> -128 ... +128).
The value is an unsigned number (0x00..0xFF <=> 0 ... 255).
Enabling or disabling keys triggers a new calibration of all enabled keys.
SET_KEY_GROUP
Write
Read
SET_LOW_POWER_MODE
Write
Read
SET_MAX_ON_DURATION
Write
Read
SET_MCKEY_PARAMETERS
Write
Read
SET_SCKEY_PARAMETERS
Write
Read
Section 6.5: Capacitive sensing characteristics on page 32
I
2
0x00 0x09
AKSGrpMode Key1Grp
Key2Grp Key3Grp
Key4Grp Key5Grp
Key6Grp Key7Grp
Key8Grp CheckSum
ErrCode
0x92 LowPowerMode
Checksum
ErrCode
0x8A MaxOnDuration
Checksum
ErrCode
0x02 0x07 0x00 DeTh
EofDeTh PosRecalTh
Resolution DirChI
DirChTh Checksum
ErrCode
0x01 0x04 0x00 DeTh
EofDeTh PosRecalTh
Checksum
ErrCode
C commands
Supported commands (continued)
Defines the AKS groups for each key.
Selects standard or Low Power mode.
Sets the maximum detected ON time before triggering an
automatic recalibration.
Sets the Detection, End Of Detection and Positive
Recalibration Thresholds for all keys.
Sets the Detection, End Of Detection and Positive
Recalibration Thresholds for all keys.
AKSGrpMode: AKS mode selection of each group (see
Table
KeynGrp: AKS group selection for key n (see
ErrCode: Standard Error code (see
LowPowerMode: Configure Low Power mode (see
ErrCode: Standard Error code (see
MaxOnDuration: Time, in second (0 for infinite)
ErrCode: Standard Error code (see
DeTh: Detection Threshold
EofDeTh: End of Detection Threshold
PosRecalTh: Positive Recalibration Threshold
Resolution: Rotor/slider resolution of the reported position (1
to 7 for 1-bit to 7-bit)
DirChI: Direction Change Integrator
DirChTh: Direction Change Threshold
ErrCode: Standard Error code (see
DeTh: Detection Threshold
EofDeTh: End of Detection Threshold
PosRecalTh: Positive Recalibration Threshold
ErrCode: Standard Error code (see
11)
Description
1) 2)
1) 2)
for default values.
Device operating mode
Table
Table
Table
Table
Table
1) 3)
1) 2)
1) 2)
1) 3)
5)
5)
5)
5)
5)
Table
1) 2)
1) 2)
Table
12)
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