H8SSLASH2225 datasheet(694/1071 Pages) RENESAS

部件名	H8S/2225

功能描述	16-Bit Single-Chip Microcomputer H8S Family/H8S/2200 Series

PDF	1071 Pages

Scroll/Zoom	100%

制造商	RENESAS [Renesas Technology Corp]

网页	http://www.renesas.com

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694 / 1071 page

Section 15 Serial Communication Interface (SCI)

Rev. 5.00 Aug 08, 2006 page 608 of 982

REJ09B0054-0500

15.6.5

Simultaneous Serial Data Transmission and Reception (Clocked Synchronous

Mode)

Figure 15.23 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 SCI 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 SCI has finished

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

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

H8S/2225 数据表(PDF) 694 Page - Renesas Technology Corp