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ATmega165 датащи(PDF) 169 Page - ATMEL Corporation

номер детали ATmega165
подробное описание детали  8-bit Microcontroller with 16K Bytes In-System Programmable Flash
PDF  336 Pages
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производитель  ATMEL [ATMEL Corporation]
домашняя страница  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATmega165 датащи(HTML) 169 Page - ATMEL Corporation

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ATmega165/V
2573G–AVR–07/09
USART Control and Status
Register C – UCSRC
• Bit 6 – UMSEL: USART Mode Select
This bit selects between asynchronous and synchronous mode of operation.
• Bit 5:4 – UPM1:0: Parity Mode
These bits enable and set type of parity generation and check. If enabled, the Transmit-
ter will automatically generate and send the parity of the transmitted data bits within
each frame. The Receiver will generate a parity value for the incoming data and com-
pare it to the UPM0 setting. If a mismatch is detected, the UPE Flag in UCSRA will be
set.
• Bit 3 – USBS: Stop Bit Select
This bit selects the number of stop bits to be inserted by the Transmitter. The Receiver
ignores this setting.
Bit
7654
321
0
–
UMSEL
UPM1
UPM0
USBS
UCSZ1
UCSZ0
UCPOL
UCSRC
Read/Write
R
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Initial Value
0000
011
0
Table 67. UMSEL Bit Settings
UMSEL
Mode
0
Asynchronous Operation
1
Synchronous Operation
Table 68. UPM Bits Settings
UPM1
UPM0
Parity Mode
0
0
Disabled
01
Reserved
1
0
Enabled, Even Parity
1
1
Enabled, Odd Parity
Table 69. USBS Bit Settings
USBS
Stop Bit(s)
01-bit
12-bit



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