CHAPTER 12 SERIAL INTERFACE FUNCTION
Preliminary User’s Manual U15905EJ1V0UD
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12.2 Asynchronous Serial Interface n (UARTn)
12.2.1 Features
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Transfer rate: 300 bps to 312.5 kbps (using a dedicated baud rate generator and an internal system clock of 17
MHz)
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Full-duplex communications
On-chip receive buffer register n (RXBn)
On-chip transmit buffer register n (TXBn)
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Two-pin configuration
Note
TXDn: Transmit data output pin
RXDn: Receive data input pin
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Reception error detection functions
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Parity error
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Framing error
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Overrun error
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Interrupt sources: 3 types
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Reception error interrupt (INTSREn):
Interrupt is generated according to the logical OR of the three
types of reception errors
•
Reception completion interrupt (INTSRn):
Interrupt is generated when receive data is transferred from the
shift register to receive buffer register n after serial transfer is
completed during a reception enabled state
•
Transmission completion interrupt (INTSTn): Interrupt is generated when the serial transmission of transmit
data (8 or 7 bits) from the shift register is completed
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The character length of transmit/receive data is specified by the ASIMn register
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Character length: 7 or 8 bits
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Parity functions: Odd, even, 0, or none
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Transmission stop bits: 1 or 2 bits
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On-chip dedicated baud rate generator
Remark
n = 0, 1
Содержание V850ES/SA2 UPD703201
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