E6248 Atmel, E6248 Datasheet - Page 23

• Manufacturer Part Number: E6248
• Description: BOARD EVAL QT60248-AS QMATRIX
• Manufacturer: Atmel
• Series: Quantum, QMatrix™r

Specifications of E6248

• Sensor Type: Touch, Capacitive
• Sensing Range: 16 / 24 Buttons/Keys
• Interface: SPI Serial
• Voltage - Supply: 3 V ~ 5 V
• Embedded: No
• Utilized Ic / Part: QT60168, QT60248
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Sensitivity: -
• Other names: 427-1087

Table 5.3 Setups Block Summary
Typical values: For most touch applicatio ns, use the values shown in the outlined cells. Bold text items indicate default settings. The number to send to the QT is the number in
the leftmost column (0..15), not numbers from within the table. The QT uses lookup tables to translate the 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.
lQ
Index Number
10
11
12
13
14
15
0
1
2
3
4
5
6
7
8
9
counts
Per key
NTHR
- 10 -
11
12
13
14
15
16
17
18
19
4
5
6
7
8
9
NDRIFT
Per key
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
NDIL counts
Per key
Key off
- 2 -
10
11
12
13
14
15
1
3
4
5
6
7
8
9
Per key
counts
unused
FDIL
- 5 -
10
11
12
13
14
15
1
2
3
4
6
7
8
9
0.5 .. 127s
0 (Infinite)
Per key
Default=
secs
NRD
10s
23
Parameter
Per key
pulses
- 48 -
BL
16
32
64
Per key
- Off -
AKS
On
Scope Sync
Per key
- Off -
On
QT60248-AS R4.02/0405
MSYNC
Global
- Off -
On
- 500µs -
1,000µs
1,250µs
1,500µs
1,750µs
2,000µs
2,250µs
2,500µs
2,750µs
3,000µs
Global
unused
750µs
BS