at42qt2100 ATMEL Corporation, at42qt2100 Datasheet - Page 3

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

Table 1-1.
9554CX–AT42–11/11
1.
Pin
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
SNS terminals can be paired with any SNSK terminals of the same group. For example, SNSA1 can be paired with any SNSKA
terminal.
Pin Listing (Continued)
SNSB7
SNSA1
SNSA2
SNSA3
SNSB1
SNSB2
CHANGE
SPREAD
SNSKA1
SNSKA2
SNSKA3
SNSKB1
RESET
Name
DRDY
MOSI
MISO
SCK
VDD
VSS
SS
(1)
(1)
(1)
(1)
(1)
(1)
I/O
I
OD
OF
P
Type
OD
I/O
OF
OF
OF
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
P
P
I
I
I
I
CMOS input/output
CMOS input only
CMOS open drain output (pull-up to Vdd)
CMOS output that can float during Reset, Sleep or LP modes
Ground or power
Function
Sense pin. Connect to CsB7
SPI Slave Select (active low)
SPI Master Out /Slave In
SPI Master In/Serial Out
SPI Clock
Power
SPI Data Ready handshake line
State change notification
Ground
Spread-spectrum drive
Connect to Vdd (high) to enable
Connect to Vss (low) to disable
Sense pin. Connect to CsA1
Sense pin. Connect to any CsA + slider/wheel
Sense pin. Connect to CsA2
Sense pin. Connect to any CsA + slider/wheel
Sense pin. Connect to CsA3
Sense pin. Connect to any CsA + slider/wheel
Reset (active low)
Sense pin. Connect to CsB1
Sense pin. Connect to any CsB + Key
Sense pin. Connect to CsB2
If Unused, Connect To...
AT42QT2100
Vdd via resistor
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
-
-
-
-
-
-
-
3