ATUC64L4U Atmel Corporation, ATUC64L4U Datasheet - Page 728

• Manufacturer Part Number: ATUC64L4U
• Manufacturer: Atmel Corporation

Specifications of ATUC64L4U

• Flash (kbytes): 64 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

29.9.2
Name:
Access Type:
Offset:
Reset Value:
• PENDBC: Pen Detect Debouncing Period
• TSPO: Touch Screen Pin Offset
• APOE: Analog Pin Output Enable
• ACE: Analog Compare Enable
• PENDET: Pen Detect
• TSAMOD: Touch Screen ADC Mode
32142A–12/2011
31
23
15
7
-
-
Period = 2
The Touch Screen Pin Offset field is used to indicate which AD pins are connected to the resistive touch screen film edges. Only
an offset is specified and it is assumed that the resistive touch screen films are connected sequentially from the specified offset
pin and up to and including offset + 3 (4 pins).
0: AD pins are not used to drive VDD in resistive touch screen sequence.
1: AD pins are used to drive VDD in resistive touch screen sequence.
Note: If the selected I/O voltage configuration is incompatible with the Analog-to-Digital converter cell voltage specification, this
bit must stay cleared to avoid damaging the ADC. In this case the ADP pins must be used to drive VDD instead, as described in
Section
case the ADP pins can be ignored.
0: The analog compare functionality is disabled.
1: The analog compare functionality is enabled.
0: The pen detect functionality is disabled.
1: The pen detect functionality is enabled.
Note: Touch detection logic can only be enabled when the ADC sequencer is idle. For successful pen detection the user must
make sure there is enough idle time between consecutive scans for the touch detection logic to settle.
0: Touch Screen Mode is disabled.
1: Touch Screen Mode is enabled.
Mode Register
29.7.3. If the I/O and ADC voltages are compatible, the AD pins can be used directly by writing a one to this bit. In this
PENDBC
APOE
30
22
14
6
-
MR
Read/Write
0x04
0x00000000
*T
CLK_ADC
PENDBC
ACE
29
21
13
5
-
PENDET
28
20
12
4
-
TSPO
27
19
11
3
-
-
-
ATUC64/128/256L3/4U
26
18
10
2
-
-
-
25
17
9
1
-
-
-
TSAMOD
24
16
8
0
-
-
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