AT42QT2640_14 Datasheet, PDF (4/73 Pages) ATMEL Corporation – 64-key 8-slider/wheel QMatrix FMEA

1.2 Pin Descriptions
Table 1-1. Pin Listing
Pin
Name
Type
1
MOSI
I
2
MISO
O
3
SCK
I
4
RST
I
5
VDD
P
6
VSS
P
7
XT2
O
8
XT1
I
9
Y0A
I/O
10
Y1A
I/O
11
Y2A
I/O
12
Y3A
I/O
13
Y4A
I/O
14
Y5A
I/O
15
Y6A
I/O
16
Y7A
I/O
17
VDD
P
18
VSS
P
19
X0
O
20
X1
O
21
X2
O
22
X3
O
23
X4
O
24
X5
O
25
X6
O
X7 /
26
O
SMP
27
VDD
P
28
VSS
P
29
VDD
P
Comments
SPI data input
SPI data output
SPI clock input
Reset low; has internal 30 k – 60 k pull-up resistor.
This pin should be controlled by the host.
Power
Ground
Ceramic resonator or crystal,16 MHz
Y line connection
Y line connection
Y line connection
Y line connection
Y line connection
Y line connection
Y line connection
Y line connection
Power
Ground
X matrix drive line
X matrix drive line
X matrix drive line
X matrix drive line
X matrix drive line
X matrix drive line
X matrix drive line
X matrix drive line /
Sample output
Power
Ground
Power
If Unused,
connect To...
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AT42QT2640 [PRELIMINARY DATASHEET]
4
9684DX–AT42–12/13