HD64F36022 datasheet(231/384 Pages) RENESAS

Part #	HD64F36022

Description	Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Tiny Series

PDF	384 Pages

Scroll/Zoom	100%

Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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231 / 384 page

Section 13 Serial Communication Interface 3 (SCI3)

Rev. 4.00 Sep. 23, 2005 Page 205 of 354

REJ09B0025-0400

13.5.5

Simultaneous Serial Data Transmission and Reception

Figure 13.14 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. To switch from transmit mode to simultaneous transmit and receive mode, after

checking that the SCI3 has finished transmission and the TDRE and TEND flags are set to 1, clear

TE to 0. Then simultaneously set TE and RE to 1 with a single instruction. To switch from receive

mode to simultaneous transmit and receive mode, after checking that the SCI3 has finished

reception, clear RE to 0. Then after checking that the RDRF and receive error flags (OER, FER,

and PER) are cleared to 0, simultaneously set TE and RE to 1 with a single instruction.

HD64F36022 Datasheet(PDF) 231 Page - Renesas Technology Corp