AT32UC3B0512-Z2UT Atmel, AT32UC3B0512-Z2UT Datasheet - Page 311
AT32UC3B0512-Z2UT
Manufacturer Part Number
AT32UC3B0512-Z2UT
Description
IC MCU AVR32 512K FLASH 64QFN
Manufacturer
Atmel
Series
AVR®32 UC3r
Datasheet
1.AT32UC3B1512-Z1UT.pdf
(692 pages)
Specifications of AT32UC3B0512-Z2UT
Core Processor
AVR
Core Size
32-Bit
Speed
60MHz
Connectivity
I²C, IrDA, SPI, SSC, UART/USART, USB
Peripherals
Brown-out Detect/Reset, DMA, POR, PWM, WDT
Number Of I /o
44
Program Memory Size
512KB (512K x 8)
Program Memory Type
FLASH
Ram Size
96K x 8
Voltage - Supply (vcc/vdd)
1.65 V ~ 1.95 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-QFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
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Manufacturer
Quantity
Price
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Part Number:
AT32UC3B0512-Z2UT
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21.6.3.4
32059K–03/2011
Manchester Decoder
Figure 21-11. Asynchronous Start Detection
Figure 21-12. Asynchronous Character Reception
When the MAN field in MR register is set to 1, the Manchester decoder is enabled. The decoder
performs both preamble and start frame delimiter detection. One input line is dedicated to Man-
chester encoded input data.
An optional preamble sequence can be defined, its length is user-defined and totally indepen-
dent of the emitter side. Use RX_PL in MAN register to configure the length of the preamble
sequence. If the length is set to 0, no preamble is detected and the function is disabled. In addi-
tion, the polarity of the input stream is programmable with RX_MPOL field in MAN register.
Depending on the desired application the preamble pattern matching is to be defined via the
RX_PP field in MAN. See
Unlike preamble, the start frame delimiter is shared between Manchester Encoder and Decoder.
So, if ONEBIT field is set to 1, only a zero encoded Manchester can be detected as a valid start
frame delimiter. If ONEBIT is set to 0, only a sync pattern is detected as a valid start frame
delimiter. Decoder operates by detecting transition on incoming stream. If RXD is sampled dur-
ing one quarter of a bit time at zero, a start bit is detected. See
rejection mechanism applies.
Clock (x16)
Baud Rate
Sampling
Sampling
Sampling
Baud Rate
Example: 8-bit, Parity Enabled
Detection
Clock
RXD
RXD
Start
Clock
RXD
1
1
2
2
samples
3
3
16
4
4
Figure 21-8
D0
5
5
samples
16
6
6
D1
7
Detection
7
Rejection
samples
Start
Start
16
8
0
for available preamble patterns.
D2
1
1
samples
16
2
2
3
3
D3
samples
4
4
16
5
D4
samples
6
16
7
D5
samples
8
16
Figure
9 10 11 12 13 14 15 16
D6
samples
16
21-13. The sample pulse
D7
samples
AT32UC3B
16
Parity
Bit
samples
16
Stop
Bit
Sampling
D0
311
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