QST104 STMicroelectronics, QST104 Datasheet - Page 19

• Manufacturer Part Number: QST104
• Description: Capacitive touch sensor device 4 keys
• Manufacturer: STMicroelectronics

QST104
4.6.5
4.7
Note:
I
The QST104 slave address is programmable using the option resistors mapped on pins
OPT2 to OPT4 (see
Table 9.
Supported commands
Table 10
For more information on the supported commands and I
standard communication protocol reference manual.
Table 10.
2
CALIBRATE_KEY (All keys)
Write
Read
CALIBRATE_KEY (Single key)
Write
Read
GET_DEBUG_INFO
Write
Read
C address selection
OPT4
V
V
V
V
V
V
V
V
DD
DD
DD
DD
SS
SS
SS
SS
Option configuration
lists the supported I²C commands and available arguments.
I
2
0x98
ErrCode
0x9B KeyID Checksum
ErrCode
0xF7 KeyID Checksum
0x0B KeyDbgState
RefMSB RefLSB
BCMSB BCLSB
Checksum
C commands
I²C address versus option resistor
Supported commands
OPT3
V
V
V
V
V
V
V
V
SS
SS
DD
DD
SS
SS
DD
DD
Table
OPT2
9).
V
V
V
V
V
V
V
V
DD
DD
DD
DD
SS
SS
SS
SS
Forces the recalibration of a single key.
Forces the recalibration of all keys.
Returns the debug info of the single KeyID channel.
ADD[6:3]
ErrCode: Standard Error code (see
KeyId: Binary-coded key number (see
ErrCode: Standard Error code (see
KeyDbgState: Current Key Debug state (see
RefMSB: Reference Count MSB
RefLSB: Reference Count LSB
BCMSB: Burst Count MSB
BCLSB: Burst Count LSB
0101
ADD2
0
0
0
0
1
1
1
1
2
C protocol, please refer to the QST
I
Description
2
C Address
ADD1
0
0
1
1
0
0
1
1
Device operating modes
Table
Table
Table
ADD0
www.DataSheet4U.com
0
1
0
1
0
1
0
1
11)
11)
14)
Table
Hex value
19)
0x2A
0x2B
0x2C
0x2D
0x2E
0x28
0x29
0x2F
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