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ST10F280 데이터시트(PDF) 149 Page - STMicroelectronics

부품명 ST10F280
상세설명  16-bit MCU with MAC unit, 512 Kbyte Flash memory and 18 Kbyte RAM
PDF  239 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
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ST10F280 데이터시트(HTML) 149 Page - STMicroelectronics

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ST10F280
Serial channels
Doc ID 8673 Rev. 3
149/239
14.1.1
ASCO in asynchronous mode
In asynchronous mode, 8 or 9-bit data transfer, parity generation and the number of stop bit
can be selected. Parity framing and overrun error detection is provided to increase the
reliability of data transfers. Transmission and reception of data is double-buffered. Full-
duplex communication up to 1.25M Bauds (at 40MHz of fCPU) is supported in this mode.
Figure 56.
Asynchronous mode of serial channel ASC0
Asynchronous mode baud rates
For asynchronous operation, the Baud rate generator provides a clock with 16 times the rate
of the established Baud rate. Every received Bit is sampled at the 7th, 8th and 9th cycle of
this clock. The Baud rate for asynchronous operation of serial channel ASC0 and the
required reload value for a given Baud rate can be determined by the following formulas:
(S0BRL) represents the content of the reload register, taken as unsigned 13 Bit integer,
(S0BRS) represents the value of Bit S0BRS (‘0’ or ‘1’), taken as integer.
BAsync =
fCPU
16 x [2 + (S0BRS)] x [(S0BRL) + 1]
S0BRL = (
fCPU
16 x [2 + (S0BRS)] x BAsync
) 1



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