at42qt2100 ATMEL Corporation, at42qt2100 Datasheet - Page 40

• Manufacturer Part Number: at42qt2100
• Description: Qtouch Touch Sensor Ic
• Manufacturer: ATMEL Corporation

Appendix A.
A.1
A.2
40
Introduction
Pin Configuration
AT42QT2100
Migrating From QT1106 to QT2100
The QT2100 is a replacement for the QT1106. As such, it is host-compatible with the QT1106
allowing existing applications to be switched over without any changes to the host firmware.
Some changes to the application circuit will, however, be required and these are documented
in this appendix.
The QT2100 has a different pin-out to the QT1106 (see
Table A-1.
Pin
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
1
2
3
4
5
6
7
8
9
Pin-out Compatibility
QT2100 Name
SNSKB
SNSB3
SNSKB
VDD
VSS
SNSKB
SNSB4
SNSB5
SNSKB
SNSKB
SNSKB
SNSB6
SNSB7
SS
MOSI
MISO
SCK
VDD
DRDY
CHANGE
VSS
SPREAD
SNSA1
SNSKA
SNSA2
SNSKA
SNSA3
QT1106 Compatibility
SNSB
SNSB
QT1106 range is +2.8V to +5.0V
SNSB
SNSB
SNSB
SNSB
QT1106 range is +2.8V to +5.0V
Optional use on QT2100
External oscillator circuit not required for QT2100
SNSA
SNSA
Table
A-1).
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