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H838532H Datasheet(PDF) 346 Page - Renesas Technology Corp

Part # H838532H
Description  16-Bit Single-Chip Microcomputer H8 Family / H8/300H Super Low Power Series
PDF  508 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

H838532H Datasheet(HTML) 346 Page - Renesas Technology Corp

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Section 10 Serial Communication Interface
Rev. 1.00 May 30, 2008 Page 326 of 484
REJ09B0436-0100
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
0
1
D0
D1
D7
0/1
1
0
1
0
D0
D1
D7
0/1
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.



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