AT32UC3A0128AU Atmel Corporation, AT32UC3A0128AU Datasheet - Page 311
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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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26.7.3.2
Figure 26-8. NRZ to Manchester Encoding
Manchester Encoder
Manchester
encoded based on biphase Manchester II format. To enable this mode, set the MAN field in the
MR register to 1. Depending on polarity configuration, a logic level (zero or one), is transmitted
as a coded signal one-to-zero or zero-to-one. Thus, a transition always occurs at the midpoint of
encoded
encoded
When the Manchester encoder is in use, characters transmitted through the USART are
each bit time. It consumes more bandwidth than the original NRZ signal (2x) but the receiver has
more error control since the expected input must show a change at the center of a bit cell. An
example of Manchester encoded sequence is: the byte 0xB1 or 10110001 encodes to 10 01 10
10 01 01 01 10, assuming the default polarity of the encoder.
this coding scheme.
The Manchester encoded character can also be encapsulated by adding both a configurable
preamble and a start frame delimiter pattern. Depending on the configuration, the preamble is a
training sequence, composed of a pre-defined pattern with a programmable length from 1 to 15
bit times. If the preamble length is set to 0, the preamble waveform is not generated prior to any
character. The preamble pattern is chosen among the following sequences: ALL_ONE,
ALL_ZERO, ONE_ZERO or ZERO_ONE, writing the field TX_PP in the MAN register, the field
TX_PL is used to configure the preamble length.
the valid patterns. To improve flexibility, the encoding scheme can be configured using the
TX_MPOL field in the MAN register. If the TX_MPOL field is set to zero (default), a logic zero is
encoded with a zero-to-one transition and a logic one is encoded with a one-to-zero transition. If
the TX_MPOL field is set to one, a logic one is encoded with a one-to-zero transition and a logic
zero is encoded with a zero-to-one transition.
NRZ
data
data
Txd
1
0
1
1
0
Figure 26-9 on page 312
0
0
Figure 26-8 on page 311
1
illustrates and defines
AT32UC3A
illustrates
311
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