at42qt1481 ATMEL Corporation, at42qt1481 Datasheet - Page 57

• Manufacturer Part Number: at42qt1481
• Description: 48-key Qmatrix Ic
• Manufacturer: ATMEL Corporation

5.34
Table 5-7.
Typical values: For most touch applications, use the values shown in the outlined cells. Bold text items indicate default settings. The number to
send to the QT1481 is the index number in the leftmost column (0 – 15), not numbers from the table. The QT1481 uses a lookup table internally to
translate the indices 0 – 15 to the parameters for each function.
NRD is an exception: It can range from 0 – 254 which is translated from 1 = 0.5s to 254 = 127s with zero = infinity.
Index
10
11
12
13
14
15
0
1
2
3
4
5
6
7
8
9
Setups Block Summary
Counts
NTHR
- 10 -
11
12
13
14
15
16
17
18
19
4
5
6
7
8
9
Setups Block Summary – Per Key Settings
Counts
PTHR
- 6 -
10
11
12
13
14
15
16
17
18
19
4
5
7
8
9
NDRIFT
Secs
- 2.5 -
0.1
0.2
0.3
0.4
0.6
0.8
1.2
1.5
3.3
4.5
7.5
10
1
2
6
PDRIFT
Secs
- 2.5 -
0.1
0.2
0.3
0.4
0.6
0.8
3.3
4.5
1.2
1.5
7.5
10
1
2
6
Counts
Key off
NDIL
- 2 -
10
11
12
13
14
15
1
3
4
5
6
7
8
9
Parameter
Per Key
Counts
Unused
FDIL
- 5 -
10
11
12
13
14
15
1
2
3
4
6
7
8
9
Default = 10s
0.5
0 (infinite)
Secs
NRD
–
127s
0 (infinite)
Secs
PRD
- 1 -
12.3
17.5
0.1
0.2
0.3
0.5
0.7
1.5
3.2
4.5
25
2
6
9
Pulses
- 48 -
BL
16
32
64
- Off -
AKS
On
CFO_1
1
– 255
- 0 -
CFO_2
1
– 255
- 0 -