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| 型号： | AT42QT1111-AU |
| 厂商： | ATMEL CORP |
| 元件分类： | 速度传感器和接近开关 |
| 英文描述： | PROXIMITY SENSOR-CAPACITIVE, 0-5V, SQUARE, SURFACE MOUNT |
| 封装： | 7 X 7 MM, 1 MM HEIGHT, 0.80 MM PITCH, ROHS COMPLIANT, PLASTIC, MS-026ABA, TQFP-32 |
| 文件页数： | 15/50页 |
| 文件大小： | 637K |
| 代理商： | AT42QT1111-AU |
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22
9571B–AT42–08/10
AT42QT1111-MU/AT42QT1111-AU
5.
Control Commands
5.1
Introduction
The QT1111 control commands are those commands that affect the device operation.
The control commands are listed in Table 5-1 and are described individually in the following
sections.
Note:
Commands are implemented immediately upon reception, so a suitable delay is
required for the operation to be completed before communications can be
re-established.
5.2
Send Setups (0x01)
This command initiates the upload of the full settings table to the QT1111 (see Section 7 on
When this command is received, the QT1111 stops key measurement and waits until 42 bytes of
setup data have been received. Key acquisition will restart after all the setup data has been
received.
If enabled, a CRC check byte is transmitted (both ways) after the 42 bytes to confirm that they
have been received correctly.
If CRC checking is not enabled, it is recommended that the host request a dump of setup data
from the QT1111, and confirms that the data correctly matches the data sent.
The host must wait for at least 300 s for the operation to be completed before communications
can be re-established.
5.3
Calibrate All (0x03)
This command initiates the recalibration of all sensor keys.
The host must wait for at least 300 s for the operation to be completed before communications
can be re-established.
Table 5-1.
Control Commands
Command
Code
Note
Send Setups
0x01
Configures the device to receive setup data
Calibrate All
0x03
Calibrates all keys
Reset
0x04
Resets the device
Sleep
0x05
Sleep (dead) mode
Store to EEPROM
0x0A
Stores RAM setups to EEPROM
Restore from EEPROM
0x0B
Copies EEPROM setups to RAM (automatically done at
startup)
Erase EEPROM
0x0C
Erases EEPROM setups
Recover EEPROM
0x0D
Restores last EEPROM settings (after erase)
Calibrate Key 'k'
0x1k
Calibrates one key (key k)
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