Rainbow Electronics AT42QT5480 - Manual (Page 3)

3
9510AS–AT42–10/08
QT5480
1.2 Pin Descriptions
Table 1-2. Pin Listing
Pin Ball Name Type Comments If Unused, Connect To...
1 B2 GPO2 O General purpose output 2 Leave open
2 B1 GPO3 O General purpose output 3 Leave open
3 C3 TRIGGER I Trigger input (active low) Vss
4 C2 RST I Reset low; has internal 30k - 60k pull-up Leave open or Vdd
5 A5 Vdd P Power –
6 A1 Vss P Supply ground –
7 D2 XT2 X Clock resonator –
8 E1 XT1 X Clock resonator –
9 D3 X0 O X matrix drive line Leave open
10 E2 X1 O X matrix drive line Leave open
11 F1 X2 O X matrix drive line Leave open
12 F2 X3 O X matrix drive line Leave open
13 G2 X4 O X matrix drive line Leave open
14 E3 X5 O X matrix drive line Leave open
15 F3 X6 O X matrix drive line Leave open
16 E4 X7 O X matrix drive line Leave open
17 C1 Vdd P Power –
18 A4 Vss P Supply ground –
19 F4 SCL OD Serial Interface Clock –
20 G5 SDA OD Serial Interface Data –
21 F5 Y0A I Y line connection Leave open
22 G6 Y1A I Y line connection Leave open
23 F6 Y2A I Y line connection Leave open
24 E5 Y3A I Y line connection Leave open
25 F7 Y4A I Y line connection Leave open
26 E6 Y5A I Y line connection Leave open
27 E7 Vdd P Power –
28 A7 Vss P Supply ground –
29 C7 Vdd P Power –
30 D6 A0 I I2C-compatible address select –
31 C6 FORCE_S I Force sensor input Vdd or Vss
32 B7 Y5B I Y line connection Leave open
33 D5 Y4B I Y line connection Leave open
34 B6 Y3B I Y line connection Leave open
35 A6 Y2B I Y line connection Leave open