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HD6432142 Scheda tecnica(PDF) 523 Page - Renesas Technology Corp

Il numero della parte HD6432142
Spiegazioni elettronici  Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2100 Series
PDF  1177 Pages
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Produttore elettronici  RENESAS [Renesas Technology Corp]
Homepage  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

HD6432142 Scheda tecnica(HTML) 523 Page - Renesas Technology Corp

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Section 15 Serial Communication Interface (SCI, IrDA)
Rev. 4.00 Sep 27, 2006 page 479 of 1130
REJ09B0327-0400
Transfer direction
Bit 0
Serial data
Serial clock
1 frame
TDRE
TEND
Bit 1
Bit 7
Bit 0
Bit 1
Bit 7
Bit 6
Data written to TDR
and TDRE flag
cleared to 0 in TXI
interrupt handling routine
TEI interrupt
request generated
TXI interrupt
request generated
TXI interrupt
request generated
Figure 15.17 Example of SCI Operation in Transmission
Serial Data Reception (Synchronous Mode): Figure 15.18 shows a sample flowchart for serial
reception.
The following procedure should be used for serial data reception.
When changing the operating mode from asynchronous to synchronous, be sure to check that the
ORER, PER, and FER flags are all cleared to 0.
The RDRF flag will not be set if the FER or PER flag is set to 1, and neither transmit nor receive
operations will be possible.



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