E62655RUSB Renesas Electronics America, E62655RUSB Datasheet - Page 670
E62655RUSB
Manufacturer Part Number
E62655RUSB
Description
EMULATOR BASE H8S/2655R W/USB
Manufacturer
Renesas Electronics America
Type
Microcontrollerr
Datasheet
1.E62655RUSB.pdf
(1093 pages)
Specifications of E62655RUSB
Contents
E6000 Emulator Unit and 4 Logic Probes
For Use With/related Products
H8S/2655R
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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Section 14 Serial Communication Interface (SCI)
In serial reception, the SCI operates as described below.
[1] The SCI performs internal initialization in synchronization with serial clock input or output.
[2] The received data is stored in RSR in LSB-to-MSB order.
[3] If the RIE bit in SCR is set to 1 when the RDRF flag changes to 1, a receive data full interrupt
Figure 14.19 shows an example of SCI operation in reception.
Simultaneous serial data transmission and reception (clocked synchronous mode): Figure
14.20 shows a sample flowchart for simultaneous serial transmit and receive operations.
The following procedure should be used for simultaneous serial data transmit and receive
operations.
Rev. 5.00 Sep 14, 2006 page 640 of 1060
REJ09B0331-0500
Serial
clock
Serial
data
RDRF
ORER
After reception, the SCI checks whether the RDRF flag is 0 and the receive data can be
transferred from RSR to RDR.
If this check is passed, the RDRF flag is set to 1, and the receive data is stored in RDR. If a
receive error is detected in the error check, the operation is as shown in table 14.11.
Neither transmit nor receive operations can be performed subsequently when a receive error
has been found in the error check.
(RXI) request is generated.
Also, if the RIE bit in SCR is set to 1 when the ORER flag changes to 1, a receive error
interrupt (ERI) request is generated.
RXI interrupt request
generated
Figure 14.19 Example of SCI Operation in Reception
Bit 7
RDR data read and
RDRF flag cleared to 0
in RXI interrupt service
routine
Bit 0
1 frame
Bit 7
Bit 0
RXI interrupt request
generated
Bit 1
ERI interrupt request
generated by overrun
error
Bit 6
Bit 7
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