H838532H datasheet(343/508 Pages) RENESAS

Part #	H838532H

Description	16-Bit Single-Chip Microcomputer H8 Family / H8/300H Super Low Power Series

PDF	508 Pages

Scroll/Zoom	100%

Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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343 / 508 page

Section 10 Serial Communication Interface

Rev. 1.00 May 30, 2008 Page 323 of 484

REJ09B0436-0100

Receiving: Figure 10.8 shows an example of a flowchart for data reception. This procedure should

be followed for data reception after initializing SCI3.

Start

End

Read bits OER,

PER, FER in SSR

Read bit RDRF

in SSR

Read receive

data in RDR

Clear bit RE to

0 in SCR3

Yes

OER + PER

+ FER = 1?

RDRF = 1?

Yes

Continue data

reception?

Yes

Receive error

processing

(A)

Read bits OER, PER, and FER in the

serial status register (SSR) to determine

if there is an error. If a receive error has

occurred, execute receive error

processing.

Read SSR and check that bit RDRF is

set to 1. If it is, read the receive data

in RDR. When the RDR data is read,

bit RDRF is cleared to 0 automatically.

When continuing data reception, finish

reading of bit RDRF and RDR before

receiving the stop bit of the current

frame. When the data in RDR is read,

bit RDRF is cleared to 0 automatically.

Figure 10.8 Example of Data Reception Flowchart (Asynchronous Mode)

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