AT32UC3L0256 Atmel Corporation, AT32UC3L0256 Datasheet - Page 606

• 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

26.4
Table 26-1.
26.5
26.5.1
26.5.2
26.5.3
32145A–12/2011
Pin Name
ADVREFP
TRIGGER
ADP0
ADP1
AD0-ADn
I/O Lines Description
Product Dependencies
I/O Lines
Power Management
Clocks
I/O Lines Description
In order to use this module, other parts of the system must be configured correctly, as described
below.
The analog input pins can be multiplexed with I/O Controller lines. The user must make sure the
I/O Controller is configured correctly to allow the ADCIFB access to the AD pins before the
ADCIFB is instructed to start converting data. If the user fails to do this the converted data may
be wrong.
The number of analog inputs is device dependent, please refer to the ADCIFB Module Configu-
ration chapter for the number of available AD inputs on the current device.
The ADVREFP pin must be connected correctly prior to using the ADCIFB. Failing to do so will
result in invalid ADC operation. See the Electrical Characteristics chapter for details.
If the TRIGGER, ADP0, and ADP1 pins are to be used in the application, the user must config-
ure the I/O Controller to assign the needed pins to the ADCIFB function.
If the CPU enters a sleep mode that disables clocks used by the ADCIFB, the ADCIFB will stop
functioning and resume operation after the system wakes up from sleep mode.
If the Peripheral Event System is configured to send asynchronous peripheral events to the
ADCIFB and the clock used by the ADCIFB is stopped, a local and temporary clock will automat-
ically be requested so the event can be processed. Refer to
and the Peripheral Event System chapter for details.
Before entering a sleep mode where the clock to the ADCIFB is stopped, make sure the Analog-
to-Digital Converter cell is put in an inactive state. Refer to
The clock for the ADCIFB bus interface (CLK_ADCIFB) is generated by the Power Manager.
This clock is enabled at reset, and can be disabled in the Power Manager. It is recommended to
disable the ADCIFB before disabling the clock, to avoid freezing the ADCIFB in an undefined
state.
Description
Reference voltage
External trigger
Drive Pin 0 for Resistive Touch Screen top channel (Xp)
Drive Pin 1 for Resistive Touch Screen right channel (Yp)
Analog input channels 0 to n
AT32UC3L0128/256
Section 26.6.13
Section
26.6.13,
Type
Analog
Digital
Digital
Digital
Analog
for more information.
Section
26.6.12,
606