h8s-2138 Renesas Electronics Corporation., h8s-2138 Datasheet - Page 497
h8s-2138
Manufacturer Part Number
h8s-2138
Description
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2138.pdf
(1061 pages)
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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.
Serial clock
Serial data
TDRE
TEND
TXI interrupt
request generated
Figure 15.17 Example of SCI Operation in Transmission
Bit 0
Data written to TDR
and TDRE flag
cleared to 0 in TXI
interrupt handling routine
Transfer direction
Bit 1
1 frame
Section 15 Serial Communication Interface (SCI, IrDA)
TXI interrupt
request generated
Bit 7
Bit 0
Rev. 4.00 Jun 06, 2006 page 443 of 1004
Bit 1
Bit 6
REJ09B0301-0400
TEI interrupt
request generated
Bit 7
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