AT32UC3L0256 Atmel Corporation, AT32UC3L0256 Datasheet - Page 614

• 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

32145A–12/2011
The ADP pins are used by default, as the APOE bit is zero after reset. Writing a one to the
APOE bit instructs the ADCIFB Resistive Touch Screen Sequencer to use the already con-
nected ADtspo+0 and ADtspo+2 pins to drive VDD to X
ADP pins can be used as general purpose I/O pins.
Before writing a one to the APOE bit the user must make sure that the I/O voltage is compatible
with the ADC input voltage. If the I/O voltage is higher than the maximum input voltage of the
ADC, permanent damage may occur. Refer to the Electrical Characteristics chapter for details.
Figure 26-3. Resistive Touch Screen Pin Connections
Analog Pin Output Enable (MR.APOE) == 1
Analog Pin Output Enable (MR.APOE) == 0
Y
Y
M
M
V AD
X
X
M
M
tspo
+
2
=
-------------------------------------------- - V DP
R
filmy
X
X
P
P
R
+
filmy
R
Y
Y
P
P
resistory
P
and Y
AT32UC3L0128/256
NC
NC
P
signals directly. In this mode the
1
AD
AD
AD
AD
AD
AD
AD
AD
DP
DP
DP
DP
tspo+0
tspo+3
tspo+0
tspo+3
tspo+1
tspo+1
tspo+2
tspo+2
0
1
0
1
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