HD6432351 datasheet(634/1025 Pages) RENESAS

Part #	HD6432351

Description	16-Bit Single-Chip Microcomputer

PDF	1025 Pages

Scroll/Zoom	100%

Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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634 / 1025 page

Section 13 Serial Communication Interface (SCI)

Rev. 3.00 Sep 15, 2006 page 600 of 988

REJ09B0330-0300

Transfer direction

Bit 7

Serial data

Serial clock

1 frame

TDRE

TEND

Bit 0

Bit 7

Bit 0

Bit 1

Bit 7

Bit 6

Data written to TDR

and TDRE flag

cleared to 0 in TXI

interrupt service routine

TEI interrupt

request generated

TXI interrupt

request generated

TXI interrupt

request generated

Figure 13.17 Example of SCI Operation in Transmission

Serial data reception (clocked synchronous mode): Figure 13.18 shows a sample flowchart for

serial reception.

The following procedure should be used for serial data reception.

When changing the operating mode from asynchronous to clocked synchronous, be sure to check

that the ORER, PER, and FER flags are all cleared to 0.

The RDRF flag will not be set if the FER or PER flag is set to 1, and neither transmit nor receive

operations will be possible.

HD6432351 Datasheet(PDF) 634 Page - Renesas Technology Corp