Renesas H8 Series Hardware Manual

Section 10 Serial Communication Interface
Rev. 7.00 Mar 10, 2005 page 369 of 652
REJ09B0042-0700
Figure 10.9 shows an example of the operation when receiving in asynchronous mode.
1 frame
Start
bit
Start
bit
Receive
data
Receive
data
Parity
bit
Stop
bit
Parity
bit
Stop
bit
Mark state
(idle state)
1 frame
01 D0 D1 D7 0/1 1 0 10D0D1 D70/1
Serial
data
RDRF
FER
LSI
operation
User
processing
RDRF
cleared to 0
RDR data read Framing error
processing
RXI request 0 start bit
detected
ERI request in
response to
framing error
Figure 10.9 Example of Operation when Receiving in Asynchronous Mode
(8-Bit Data, Parity, 1 Stop Bit)
10.3.3 Operation in Synchronous Mode
In synchronous mode, SCI3 transmits and receives data in synchronization with clock pulses.
This mode is suitable for high-speed serial communication.
SCI3 has separate transmission and reception units, allowing full-duplex communication with a
shared clock.
As the transmission and reception units are both double-buffered, data can be written during
transmission and read during reception, making possible continuous transmission and reception.

Renesas H8 Series Specifications

General

Brand	Renesas
Model	H8 Series
Category	Computer Hardware
Language	English