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AT42QT2100 Datasheet(PDF) 28 Page - ATMEL Corporation

Part # AT42QT2100
Description  QTouch Touch Sensor IC
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT42QT2100 Datasheet(HTML) 28 Page - ATMEL Corporation

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AT42QT2100 [DATASHEET]
9554E–AT42–01/13
5.5
Device Version
5.5.1
Introduction
In a Device Version exchange (Req = 010) the host requests the QT2100 to send the device ID and Firmware
version information.
5.5.2
Host Data
In Device Version command mode the host sends the 3-byte data in
Table 5-13.
Byte 0
Req: Set to 010 to indicate Device Version command mode.
Byte 1
Always set to 0.
Byte 2
Always set to 0.
5.5.3
QT2100 Data
During this exchange, the QT2100 returns the data requested on the previous exchange (Normal Data by default),
and at the next exchange the requested data is returned.
Byte 0
Device ID: the device ID; always 108 (0x6C)
Byte 1
Version Major: 4 bits, indicating the major version of the device.
Version Minor: 4 bits, indicating the minor version of the device.
For example, firmware version 1.0 would be indicated as 0x10.
Table 5-13. Device Version Command Mode – Host Command Bytes
Host
Byte
Bit
7
6
5
4
3
2
1
0
0
Req = 010
0
0
0
0
0
1
0
0
0
0
0
0
0
0
2
0
0
0
0
0
0
0
0
Note:
Bits labelled 0 should not be altered
Table 5-14. Device Version Command Mode – Return Bytes
QT2100
Byte
Bit
7
6
5
4
3
2
1
0
0
Device ID = 108 (
0x6C)
1
Version Major
Version Minor
2
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