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QST108AM0 数据表(PDF) 21 Page - STMicroelectronics

部件名 QST108AM0
功能描述  Capacitive touch sensor device 8 keys with individual key state outputs or I2C interface
PDF  51 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

QST108AM0 数据表(HTML) 21 Page - STMicroelectronics

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QST108
Device operating modes
21/51
4.6.5
I2C address selection
The QST108 slave address is programmable using the option resistors mapped on pins
OPT2 to OPT4 (see Table 9).
4.7
Supported commands
Table 10 lists the supported I²C commands and available arguments.
Note:
For more information on the supported commands and I2C protocol, please refer to the QST
standard communication protocol reference manual.
Table 9.
I²C address versus option resistor
Option configuration
I2C Address
OPT4
OPT3
OPT2
ADD[6:3]
ADD2
ADD1
ADD0
Hex value
VSS
VSS
VSS
0101
0
0
0
0x28
VSS
VSS
VDD
0
0
1
0x29
VSS
VDD
VSS
0
1
0
0x2A
VSS
VDD
VDD
0
1
1
0x2B
VDD
VSS
VSS
1
0
0
0x2C
VDD
VSS
VDD
1
0
1
0x2D
VDD
VDD
VSS
1
1
0
0x2E
VDD
VDD
VDD
1
1
1
0x2F
Table 10.
Supported commands
I2C commands
Description
CALIBRATE_KEY (All keys)
Write
0x98
Forces the recalibration of all keys.
ErrCode: Standard Error code (see Table 11)
Read
ErrCode
CALIBRATE_KEY (Single key)
Write
0x9B KeyID Checksum
Forces the recalibration of a single key.
KeyId: Binary-coded key number (see Table 14)
ErrCode: Standard Error code (see Table 11)
Read
ErrCode
GET_DEBUG_INFO
Write
0xF7 KeyID Checksum
Returns the debug info of the single KeyID channel.
KeyDbgState: Current Key Debug state (see Table 19)
RefMSB: Reference Count MSB
RefLSB: Reference Count LSB
BCMSB: Burst Count MSB
BCLSB: Burst Count LSB
Read
0x0B KeyDbgState
RefMSB RefLSB
BCMSB BCLSB
Checksum



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