qt1101 Quantum Research Group, qt1101 Datasheet - Page 3

• Manufacturer Part Number: qt1101
• Description: 10 Key Qtouch? Sensor Ic
• Manufacturer: Quantum Research Group

1.1 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
-
-
-
-
-
Pin Type
Notes
48 SSOP
11, 12, 13,
14, 15, 16
18, 19, 20
39, 40,
23, 24
I
I/O
OD
I/OD
O/OD
Pwr
41, 42
†
* Option resistor is required only in Full Options mode (see Figure 1.1)
‡
** See text
Pin
Mode resistor is required only in Simplif ied mode (see Figure 1.2)
Pin is either Sync or LP depending on options selected (functions SL_0, SL_1, see Figure 1.1)
33
34
35
36
37
38
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 open drain output
CMOS input or open drain output
CMOS push pull or open-drain output (option selected)
Power / ground
SYNC/LP
/CHANGE
DETECT
SNS0K
SNS1K
SNS2K
SNS3K
SNS4K
SNS5K
SNS6K
SNS7K
SNS8K
SNS9K
Name
SNS0
SNS1
SNS2
SNS3
SNS4
SNS5
SNS6
SNS7
SNS8
SNS9
/RST
OSC
Vdd
Vss
1W
SS
n/c
n/c
n/c
n/c
n/c
n/c
n/c
RX
‡
Type
O/OD
I/OD
Pwr
Pwr
OD
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/O
I/O
I/O
I/O
-
-
-
-
-
-
-
I
I
I
I
Sense pin and mode
1W mode serial I/O
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
State changed
Detect Status
option select
option select
option select
option select
option select
option select
mode select
2W Receive
Reset input
Function
Sense pin
Sense pin
Sense pin
Sense pin
Sense pin
Sense pin
Sense pin
Sense pin
Sense pin
Sense pin
Sense pin
Sense pin
Oscillator
Ground
Power
-
-
-
-
-
-
-
3
spread spectrum RC network
To Cs7 and/or mode resistor
Rising edge sync or LP pulse
Resistor to Vdd and optional
0 = a key state has changed
Requires pull-up to Vdd
Spread spectrum drive
To Cs6 + Key and/or
Input for 2W mode
or option resistor*
Requires pull-up
Active low reset
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 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
See Table 1.4
To Cs8 + Key
To Cs9 + Key
+2.8 ~ +5.0V
Leave open
To Cs4
To Cs8
To Cs9
Notes
0V
-
-
-
-
-
-
†
†
QT1101 R4.06/0806
100K✡ resistor to Vss
100K✡ resistor to Vss
resistor
option resistor*
option resistor*
option resistor*
option resistor*
option resistor*
option resistor*
mode resistor
Open or mode
Vdd or Vss**
If Unused
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
Open
Open
Open
Vdd
Vdd
†
-
-
-
-
-
or option
†