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QST104 데이터시트(PDF) 22 Page - STMicroelectronics

부품명 QST104
상세설명  Capacitive touch sensor device 4 keys with individual key state outputs or I2C interface
PDF  45 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

QST104 데이터시트(HTML) 22 Page - STMicroelectronics

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Device operating modes
QST104
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Error codes
Table 11 lists the I2C error codes.
KeyError byte description
Key state (Bit 7)
When set to ‘1’, the corresponding key is touched. This bit is always cleared for the
GET_KEY_STATE command.
Key error codes (Bits 2:0)
When answering the GET_KEY_STATE command, the key error code corresponds to
the error codes of all the keys ORed toghether. When answering the
GET_KEY_ERROR command, each key error code describes the errors of one defined
key.
Bit 0: When set to ‘1’, calibration in progress
Bit 1: When set to ‘1’, maximum count reached
Bit 2: When set to ‘1’, minimum count not reached
All key state description
Key n state
When set to ‘1’, the corresponding key is touched.
Table 11.
ErrCode
ErrCode
Description
0x01
No Error
0x83
Command not supported
0x85
Parameter not supported
0xA1
Parity Error
0xA3
Checksum Error
0xE0
Initialization process (GET_FIRMWARE_INFO command not received)
Table 12.
KeyError byte description
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Key State
0
0
0
0
Key error codes
Table 13.
AllKeyState
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
0
0
0
0
Key 4 State Key 3 State Key 2 State Key 1 State



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