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AT90PWM2 Datasheet(PDF) 211 Page - ATMEL Corporation

Part # AT90PWM2
Description  8-bit Microcontroller with 8K Bytes In-System Programmable Flash
PDF  361 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT90PWM2 Datasheet(HTML) 211 Page - ATMEL Corporation

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211
4317J–AVR–08/10
AT90PWM2/3/2B/3B
•
Asynchonous frames
–
Standard bit level encoded
–
Manchester bit encoded
•
Synchronous frames
–
In this mode only the Standard bit level encoded is available
19.3
Serial Frames
A serial frame is defined to be one character of data bits with synchronization bits (start and stop
bits), and optionally a parity bit for error checking.
19.3.1
Frame Formats
The EUSART allows to receive and transmit serial frame with the following format:
•
1 start bit
•
5, 6, 7, 8, 9, 13, 14,15,16,17 data bits
•
data bits and start bit level encoded or Manchester encoded
•
data transmition MSB or LSB first (bit ordering)
•
no, even or odd parity bit
•
1 or 2 stop bits:
–
Stop bits insertion for transmition
–
Stop bits value read access in reception
PARITY
GENERATOR
UBRR[H:L]
UDR
(Transmit)
EUDR
(Transmit)
UDR
(Receive)
EUDR
(Receive)
UCSRA
UCSRB
UCSRC
EUCSRA
EUCSRB
EUCSRC
BAUD RATE GENERATOR
TRANSMIT SHIFT REGISTER
RECEIVE SHIFT REGISTER
RxD
TxD
PIN
CONTROL
PIN
CONTROL
XCK
DATA
RECOVERY
CLOCK
RECOVERY
PIN
CONTROL
TX
CONTROL
RX
CONTROL
PARITY
CHECKER
MANCHESTER
ENCODER
CLKio
SYNC LOGIC
Clock Generator
Transmitter
Receiver
MANCHESTER
DECODER



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