AT32UC3B0128 Atmel Corporation, AT32UC3B0128 Datasheet - Page 305
AT32UC3B0128
Manufacturer Part Number
AT32UC3B0128
Description
Manufacturer
Atmel Corporation
Datasheets
1.AT32UC3A0128.pdf
(377 pages)
2.AT32UC3A0128.pdf
(33 pages)
3.AT32UC3A0128.pdf
(159 pages)
4.AT32UC3B0128.pdf
(684 pages)
5.AT32UC3B0128.pdf
(107 pages)
Specifications of AT32UC3B0128
Flash (kbytes)
128 Kbytes
Pin Count
64
Max. Operating Frequency
60 MHz
Cpu
32-bit AVR
# Of Touch Channels
32
Hardware Qtouch Acquisition
No
Max I/o Pins
44
Ext Interrupts
44
Usb Transceiver
1
Usb Speed
Full Speed
Usb Interface
Device + OTG
Spi
4
Twi (i2c)
1
Uart
3
Ssc
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
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
32
Self Program Memory
YES
Dram Memory
No
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
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21.6.4.2
32059L–AVR32–01/2012
Manchester Encoder
Manchester II Biphase format. To enable this mode, write a one to MR.MAN. Depending on
polarity configuration, as selected by the Transmission Manchester Polarity bit in the Man-
the transition from high -to-low or low-to-high during the middle of each bit period. This consumes
When the Manchester endec is used, characters transmitted through the USART are encoded in
Figure 21-6. Transmitter Status
chester Configuration Register (MAN.TX_MOPL), a logic level (zero or one), is transmitted as
twice the bandwidth than the simpler NRZ coding schemes, but the receiver has more error con-
trol since the expected input has a transition at every mid-bit period. An example of a
Manchester encoded sequence is the byte 0xB1 or 10110001 being encoded to 10 01 10 10 01
01 01 10, assuming default encoder polarity.
Figure 21-7. NRZ to Manchester Encoding
A Manchester encoded character can be preceded by both a preamble sequence, and a start
frame delimiter. The preamble sequence is a pre-defined pattern with a configurable length from
1 to 15 bit periods. If the preamble length is zero, the preamble waveform is not generated. The
length is selected by writing to the Transmitter Preamble Length field (MAN.TX_PL). The avail-
able preamble sequence patterns are: ALL_ONE, ALL_ZERO, ONE_ZERO or ZERO_ONE, and
are selected by writing to the Transmitter Preamble Pattern field (MAN.TX_PP).
illustrates the supported patterns.
Baud Rate
TXEMPTY
TXRDY
Clock
Write
TXD
THR
Manchester
encoded
encoded
NRZ
data
data
Start
Bit
Txd
D0
D1
D2
1
D3
D4
0
D5
D6
1
D7
Figure 21-7
Parity
Bit
1
Stop
Bit
Start
Bit
0
D0
illustrates this coding scheme.
D1
0
D2
D3
0
D4
D5
1
D6
D7
Parity
Bit
Figure 21-8
Stop
Bit
305
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