AT32UC3L064_1 ATMEL [ATMEL Corporation], AT32UC3L064_1 Datasheet - Page 682

• Manufacturer Part Number: AT32UC3L064_1
• Description: AVR32 32-bit Microcontroller
• Manufacturer: ATMEL [ATMEL Corporation]

28.7.8
Name:
Access Type:
Offset:
Reset Value:
•
• CHLEN: Charge Length
• SELEN: Settle Length
32099A–AVR32–06/09
DIV: Clock Divider
31
23
15
7
The prescaler is used to ensure that the CLK_CAT clock is divided to around 1 MHz to produce the sampling clock.The
prescaler uses the following formula to generate the sampling clock:
Sampling clock = CLK_CAT / (2(DIV+1))
For the QTouch method, specifies how many sample clock cycles should be used for transferring charge to the sense capacitor.
For the QTouch method, specifies how many sample clock cycles should be used for settling after charge transfer.
Touch Group x Configuration Register 0
30
22
14
6
TGxCFG0
Read/Write
0x20, 0x28
0x00000000
29
21
13
5
28
20
12
4
DIV[15:8]
DIV[7:0]
CHLEN
SELEN
27
19
11
3
26
18
10
2
25
17
9
1
AT32UC3L
24
16
8
0
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