參數(shù)資料
型號(hào): MR80C52CXXX-12/883:D
廠商: TEMIC SEMICONDUCTORS
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 12 MHz, MICROCONTROLLER, CQCC44
文件頁(yè)數(shù): 24/125頁(yè)
文件大小: 6456K
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192
8021G–AVR–03/11
ATmega329P/3290P
Bit 5:4 – UPMn1:0: Parity Mode
These bits enable and set type of parity generation and check. If enabled, the Transmitter 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 compare it to the UPMn0 setting.
If a mismatch is detected, the UPEn Flag in UCSRnA will be set.
Bit 3 – USBSn: Stop Bit Select
This bit selects the number of stop bits to be inserted by the Transmitter. The Receiver ignores
this setting.
Bit 2:1 – UCSZn1:0: Character Size
The UCSZn1:0 bits combined with the UCSZn2 bit in UCSRnB sets the number of data bits
(Character SiZe) in a frame the Receiver and Transmitter use.
Bit 0 – UCPOLn: Clock Polarity
This bit is used for synchronous mode only. Write this bit to zero when asynchronous mode is
used. The UCPOLn bit sets the relationship between data output change and data input sample,
and the synchronous clock (XCK).
Figure 19-10. UPMn Bits Settings
UPMn1
UPMn0
Parity Mode
0
Disabled
01
Reserved
1
0
Enabled, Even Parity
1
Enabled, Odd Parity
Figure 19-11. USBSn Bit Settings
USBSn
Stop Bit(s)
01-bit
12-bit
Figure 19-12. UCSZ Bits Settings
UCSZn2
UCSZn1
UCSZn0
Character Size
0
5-bit
0
1
6-bit
0
1
0
7-bit
0
1
8-bit
100
Reserved
101
Reserved
110
Reserved
1
9-bit
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