R8CSLASH29 datasheet(284/471 Pages) RENESAS

Part #	R8C/29

Description	RENESAS 16-BIT SINGLE-CHIP MCU R8C FAMILY / R8C/2x SERIES

PDF	471 Pages

Scroll/Zoom	100%

Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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284 / 471 page

R8C/28 Group, R8C/29 Group

16. Clock Synchronous Serial Interface

Rev.2.10

Sep 26, 2008

Page 267 of 441

REJ09B0279-0210

Figure 16.14

Sample Flowchart of Data Transmission (Clock Synchronous Communication Mode)

Start

Initialization

Read TDRE bit in SSSR register

SSSR register

TEND bit

← 0(1)

End

TDRE = 1 ?

Write transmit data to SSTDR register

Data

transmission

continues?

Read TEND bit in SSSR register

TEND = 1 ?

Yes

SSER register

TE bit

← 0

(1)

(2)

(3)

(1) After reading the SSSR register and confirming

that the TDRE bit is set to 1, write the transmit

data to the SSTDR register. When the transmit

data is written to the SSTDR register, the TDRE

bit is automatically set to 0.

(2) Determine whether data transmission continues.

(3) When data transmission is completed, the TEND

bit is set to 1. Set the TEND bit to 0 and the TE bit

to 0 and complete transmit mode.

NOTE:

1. Write 0 after reading 1 to set the TEND bit to 0.

R8C/29 Datasheet(PDF) 284 Page - Renesas Technology Corp