ATUC128L4U Atmel Corporation, ATUC128L4U Datasheet - Page 792

• Manufacturer Part Number: ATUC128L4U
• Manufacturer: Atmel Corporation

Specifications of ATUC128L4U

• Flash (kbytes): 128 Kbytes
• Pin Count: 48
• Max. Operating Frequency: 50 MHz
• Cpu: 32-bit AVR
• # Of Touch Channels: 17
• Hardware Qtouch Acquisition: Yes
• Max I/o Pins: 36
• Ext Interrupts: 36
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 1
• Twi (i2c): 2
• Uart: 4
• Lin: 4
• Ssc: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 12
• Adc Speed (ksps): 460
• Analog Comparators: 8
• Resistive Touch Screen: No
• Temp. Sensor: Yes
• Crypto Engine: No
• Sram (kbytes): 16
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: Yes
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.62 to 3.6
• Operating Voltage (vcc): 1.62 to 3.6
• Fpu: No
• Mpu / Mmu: Yes / No
• Timers: 6
• Output Compare Channels: 18
• Input Capture Channels: 12
• Pwm Channels: 35
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

31.7.10
Name:
Access Type:
Offset:
Reset Value:
• DIV: Clock Divider
• CHLEN: Charge Length
• SELEN: Settle Length
32142A–12/2011
31
23
15
7
The prescaler is used to ensure that the CLK_CAT clock is divided to around 4 MHz to produce the burst timing clock.The
prescaler uses the following formula to generate the burst timing clock:
Burst timing clock = CLK_CAT / (2(DIV+1))
For QMatrix sensors, specifies how many burst prescaler clock cycles should be used for transferring charge to the sense
capacitor.
For QMatrix sensors, specifies how many burst prescaler clock cycles should be used for settling after charge transfer.
Matrix Group Configuration Register 0
30
22
14
6
MGCFG0
Read/Write
0x30
0x00000000
29
21
13
5
28
20
12
4
DIV[15:8]
DIV[7:0]
CHLEN
SELEN
27
19
11
3
ATUC64/128/256L3/4U
26
18
10
2
25
17
9
1
24
16
8
0
792