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QST108 数据表(PDF) 18 Page - STMicroelectronics

部件名 QST108
功能描述  Capacitive touch sensor device 8 keys with individual key state outputs or I2C interface
PDF  38 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

QST108 数据表(HTML) 18 Page - STMicroelectronics

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Device operating modes
QST108
18/38
4.5.5
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.
Figure 5.
Optional LED schematic
Ai12570
GPOn
VUNREG
R
C (10 nF)
Table 10.
Supported commands
I2C commands
Description
RESET_DEVICE
Write
0xFD
Restarts the device (options Read and Calibration) after
reading the ErrCode (see Table 11).
Read
ErrCode
GET_DEVICE_INFO
Write
0x85
Returns the QST108 device version and ASCII-coded device
name. This command must be sent first to enable the
communication flow.
MainVers: Device main version
SubVer: Device sub-version
NbSCkey: 0x08 single-channel keys
NbMCkey: 0x00 multi-channel keys
Q S T 1 0 8: ASCII-coded device name
Read
0x15 MainVers SubVers
NbSCkey NbMCkey
‘Q’ ’S’ ‘T’ ‘1’ ‘0’ ‘8’
Checksum
GET_PROTOCOL_VERSION
Write
0x80
Returns the QST108 protocol version.
MainVers: Protocol main version
SubVer: Protocol sub-version
I2CSpeed: 0x01 (400 kHz maximum)
Read
MainVers SubVer
I2CSpeed Checksum
CALIBRATE_KEY (All keys)
Write
0x98
Forces the recalibration of all keys.
ErrCode: Standard Error code (see Table 11)
Read
ErrCode



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