AT32UC3L0256 Atmel Corporation, AT32UC3L0256 Datasheet - Page 712

• Manufacturer Part Number: AT32UC3L0256
• Manufacturer: Atmel Corporation

Specifications of AT32UC3L0256

• Flash (kbytes): 256 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 Speed: No
• Usb Interface: No
• Spi: 5
• Twi (i2c): 2
• Uart: 4
• Lin: 4
• 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

29.6.2
29.6.3
32145A–12/2011
Configuring the Lookup Table
Output Filter
The lookup table in each LUT unit can generate any logic expression OUT as a function of up to
four inputs, IN[3:0]. The truth table for the expression is written to the TRUTH register for the
LUT.
and the corresponding input and outputs will be IN[4n] to IN[4n+3] and OUTn.
Table 29-2.
By default, the output OUTn is a combinatorial function of the inputs IN[4n] to IN[4n+3]. This may
cause some short glitches to occur when the inputs change value.
It is also possible to clock the output through a filter to remove glitches. This requires that the
corresponding generic clock (GCLK) has been enabled before use. The filter can then be
enabled by writing a one to the Filter Enable (FILTEN) bit in CRn. The OUTn output will be
delayed by three to four GCLK cycles when the filter is enabled.
IN[3]
Table 29-2
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
Truth Table for the Lookup Table in LUT0
shows the truth table for LUT0. The truth table for LUTn is written to TRUTHn,
IN[2]
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
IN[1]
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
IN[0]
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
AT32UC3L0128/256
TRUTH0[10]
TRUTH0[11]
TRUTH0[12]
TRUTH0[13]
TRUTH0[14]
TRUTH0[15]
TRUTH0[0]
TRUTH0[1]
TRUTH0[2]
TRUTH0[3]
TRUTH0[4]
TRUTH0[5]
TRUTH0[6]
TRUTH0[7]
TRUTH0[8]
TRUTH0[9]
OUT[0]
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