qt1080 Quantum Research Group, qt1080 Datasheet - Page 4

• Manufacturer Part Number: qt1080
• Description: 8 Key Qtouch? Sensor Ic
• Manufacturer: Quantum Research Group

1.2 Wiring
lQ
32-QFN
Pin
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
1
2
3
4
5
6
7
8
9
-
-
-
-
48-SSOP
38, 39, 40,
11, 12, 13,
14, 15, 16
18, 19, 20
Pin Type
I
I/O
O
OD
O/OD
Pwr
Notes
†
* Option resistor is required only in Full Options mode (see Figure 1.1)
‡
41, 42
23, 24
Mode resistor is required only in Simplified mode (see Figure 1.2)
Pin is either Sync or LP depending on options selected (functions SL_0, SL_1, see Figure 1.1)
Pin
33
34
35
36
37
43
44
45
46
47
48
10
17
21
22
25
26
27
28
29
30
31
32
1
2
3
4
5
6
7
8
9
CMOS input only
CMOS I/O
CMOS push-pull output
CMOS open drain output
CMOS push pull or open-drain output (option selected)
Power / ground
SYNC/LP
DETECT
SNS0K
SNS1K
SNS2K
SNS3K
SNS4K
SNS5K
SNS6K
OUT_0
OUT_1
OUT_2
OUT_3
OUT_4
OUT_5
OUT_6
OUT_7
Name
SNS0
SNS1
SNS2
SNS3
SNS4
SNS5
SNS6
SNS7
SN7K
/RST
OSC
Vdd
Vss
SS
n/c
n/c
n/c
n/c
n/c
‡
Type
O/OD
O/OD
O/OD
O/OD
O/OD
O/OD
O/OD
O/OD
O/OD
Pwr
Pwr
OD
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
-
I
I
-
-
-
I
-
Sense pin and mode
Spread spectrum
Sync In or LP In
or option select
Table 1.1 Pinlist
Sense pin and
Sense pin and
Sense pin and
Sense pin and
Sense pin and
Sense pin and
Sense pin and
Sense pin and
Detect Status
option select
option select
option select
option select
option select
option select
option select
mode select
Reset input
Function
Sense pin
Sense pin
Sense pin
Sense pin
Sense pin
Sense pin
Sense pin
Oscillator
Ground
Power
Out 0
Out 1
Out 2
Out 3
Out 4
Out 5
Out 6
Out 7
-
-
-
-
-
4
spread spectrum RC network
To Cs7 and/or mode resistor
Rising edge sync or LP pulse
pins are clamped internally to
Resistor to Vdd and optional
In binary coded mode, these
Also, binary coded output 0
Also, binary coded output 1
Also, binary coded output 2
Active = any key in detect
Spread spectrum drive
To Cs6 + Key and/or
or option resistor*
Active low reset
option resistor*
option resistor*
option resistor*
option resistor*
option resistor*
option resistor*
mode resistor
To Cs0 and/or
option resistor
To Cs1 and/or
To Cs2 and/or
To Cs3 and/or
To Cs4 and/or
To Cs5 and/or
To Cs6 and/or
To Cs0 + Key
To Cs1 + Key
To Cs2 + Key
To Cs3 + Key
To Cs4 + Key
To Cs5 + Key
To Cs7 + Key
+2.8 ~ +5.0V
Leave open
Leave open
Leave open
Leave open
Leave open
Notes
Vss
0V
†
†
QT1080 R11.06/0806
100K resistor to Vss
resistor
option resistor*
option resistor*
option resistor*
option resistor*
option resistor*
option resistor*
Option resistor
mode resistor
Open or mode
If Unused
Vdd or Vss
resistor*
Open or
Open or
Open or
Open or
Open or
Open or
Open or
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Vdd
†
-
-
-
-
-
-
-
-
or option
†