QT1081 Datasheet, PDF (5/20 Pages) Quantum Research Group – 8-KEY QTOUCH SENSOR IC

1.3 Wiring
Table 1.1 Pinlist
32-QFN
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Name
SS
/RST
Vdd
OSC
n/c
SNS0
SNS0K
SNS1
SNS1K
SNS2
SNS2K
SNS3
SNS3K
SNS4
SNS4K
SNS5
SNS5K
SNS6
SNS6K
SNS7
SN7K
Vss
SYNC/LP^‡
DETECT
OUT_0
OUT_1
OUT_2
OUT_3
OUT_4
OUT_5
OUT_6
OUT_7
Type
OD
I
Pwr
I
-
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
Pwr
I
O/OD
O/OD
O/OD
O/OD
O/OD
O/OD
O/OD
O/OD
O/OD
Function
Notes
If Unused
Spread spectrum
Reset input
Power
Oscillator
-
Sense pin and
option select
Sense pin
Sense pin and
option select
Sense pin
Sense pin and
option select
Sense pin
Sense pin and
option select
Sense pin
Sense pin and
option select
Sense pin
Sense pin and
option select
Sense pin
Sense pin and
option select
Sense pin and
mode select
Sense pin and mode
or option select
Sense pin
Ground
Sync In or LP In
Detect Status
Out 0
Out 1
Out 2
Out 3
Out 4
Out 5
Out 6
Out 7
Spread spectrum drive
100K resistor to Vss
Active low reset
Vdd
+2.8 ~ +5.0V
-
Resistor to Vdd and optional
spread spectrum RC network
-
Leave open
-
To Cs0 and/or
option resistor
To Cs0 + Key
Option resistor
Open
To Cs1 and/or
option resistor*
Open or
option resistor*
To Cs1 + Key
Open
To Cs2 and/or
option resistor*
To Cs2 + Key
Open or
option resistor*
Open
To Cs3 and/or
option resistor*
To Cs3 + Key
Open or
option resistor*
Open
To Cs4 and/or
option resistor*
Open or
option resistor*
To Cs4 + Key
Open
To Cs5 and/or
option resistor*
Open or
option resistor*
To Cs5 + Key
Open
To Cs6 and/or
option resistor*
Open or
option resistor*
To Cs6 + Key and/or
mode resistor^†
To Cs7 and/or mode resistor^†
or option resistor*
Open or
mode resistor^†
Open or mode resistor^†
or option resistor*
To Cs7 + Key
Open
0V
-
Rising edge sync or LP pulse Vdd or Vss
Active = any key in detect
Open
Also, binary coded output 0
Open
Also, binary coded output 1
Open
Also, binary coded output 2
Open
Open
Open
In binary coded mode,
are clamped internally
these pins
to Vss
Open
Open
Open
Pin Type
I
CMOS input only
I/O
CMOS I/O
O
CMOS push-pull output
OD
CMOS open drain output
O/OD CMOS push pull or open-drain output (option selected)
Pwr
Power / ground
Notes
† _{Mode resistor is required only in Simplified mode (see Figure 1.2)}
* Option resistor is required only in Full Options mode (see Figure 1.1)
‡ _{Pin is either Sync or LP depending on options selected (functions SL_0, SL_1, see Figure 1.1)}
lQ
5
QT1081_1R0.04_0307