AT32UC3A0128AU Atmel Corporation, AT32UC3A0128AU Datasheet - Page 705
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AT32UC3A0128AU
Manufacturer Part Number
AT32UC3A0128AU
Description
Manufacturer
Atmel Corporation
Datasheets
1.AT32UC3A0128.pdf
(98 pages)
2.AT32UC3A0128.pdf
(826 pages)
3.AT32UC3A0128.pdf
(377 pages)
4.AT32UC3A0128.pdf
(33 pages)
5.AT32UC3A0128.pdf
(159 pages)
6.AT32UC3A0128AU.pdf
(2 pages)
Specifications of AT32UC3A0128AU
Flash (kbytes)
128 Kbytes
Pin Count
144
Max. Operating Frequency
66 MHz
Cpu
32-bit AVR
# Of Touch Channels
32
Hardware Qtouch Acquisition
No
Max I/o Pins
109
Ext Interrupts
109
Usb Transceiver
1
Usb Speed
Full Speed
Usb Interface
Device + OTG
Spi
6
Twi (i2c)
1
Uart
4
Ssc
1
Ethernet
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
8
Adc Resolution (bits)
10
Adc Speed (ksps)
384
Resistive Touch Screen
No
Dac Channels
2
Dac Resolution (bits)
16
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
32
Self Program Memory
YES
External Bus Interface
1
Dram Memory
sdram
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-40 to 85
I/o Supply Class
3.0-3.6 or (1.65-1.95+3.0-3.6)
Operating Voltage (vcc)
3.0-3.6 or (1.65-1.95+3.0-3.6)
Fpu
No
Mpu / Mmu
Yes / No
Timers
10
Output Compare Channels
16
Input Capture Channels
6
Pwm Channels
13
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT32UC3A0128AU-U
Manufacturer:
ATMEL
Quantity:
4
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32058K AVR32-01/12
33.6.5
33.6.6
Conversion Triggers
Sleep Mode and Conversion Sequencer
Conversions of the active analog channels are started with a software or a hardware trigger. The
software trigger is provided by writing the Control Register (CR) with the bit START at 1.
The hardware trigger can be one of the TIOA outputs of the Timer Counter channels, or the
external trigger input of the ADC (TRIGGER). The hardware trigger is selected with the field
TRGSEL in the Mode Register (MR). The selected hardware trigger is enabled with the bit
TRGEN in the Mode Register (MR).
If a hardware trigger is selected, the start of a conversion is detected at each rising edge of the
selected signal. If one of the TIOA outputs is selected, the corresponding Timer Counter channel
must be programmed in Waveform Mode.
Only one start command is necessary to initiate a conversion sequence on all the channels. The
ADC hardware logic automatically performs the conversions on the active channels, then waits
for a new request. The Channel Enable (CHER) and Channel Disable (CHDR) Registers enable
the analog channels to be enabled or disabled independently.
If the ADC is used with a PDC, only the transfers of converted data from enabled channels are
performed and the resulting data buffers should be interpreted accordingly.
Warning: Enabling hardware triggers does not disable the software trigger functionality. Thus, if
a hardware trigger is selected, the start of a conversion can be initiated either by the hardware or
the software trigger.
The ADC Sleep Mode maximizes power saving by automatically deactivating the ADC when it is
not being used for conversions. Sleep Mode is selected by setting the bit SLEEP in the Mode
Register MR.
The SLEEP mode is automatically managed by a conversion sequencer, which can automati-
cally process the conversions of all channels at lowest power consumption.
When a start conversion request occurs, the ADC is automatically activated. As the analog cell
requires a start-up time, the logic waits during this time and starts the conversion on the enabled
channels. When all conversions are complete, the ADC is deactivated until the next trigger. Trig-
gers occurring during the sequence are not taken into account.
The conversion sequencer allows automatic processing with minimum processor intervention
and optimized power consumption. Conversion sequences can be performed periodically using
a Timer/Counter output. The periodic acquisition of several samples can be processed automat-
ically without any intervention of the processor thanks to the PDC.
Note:
The reference voltage pins always remain connected in normal mode as in sleep mode.
AT32UC3A
705
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