38K2 datasheet(201/358 Pages) RENESAS

Part #	38K2

Description	RENESAS 8-BIT SINGLE-CHIP MICROCOMPUTER 740 FAMILY / 38000 SERIES

PDF	358 Pages

Scroll/Zoom	100%

Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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201 / 358 page

2.4 Serial I/O

Rev.2.00

Oct 15, 2006

page 52 of 112

38K2 Group

REJ09B0338-0200

APPLICATION

Fig. 2.4.18 Control procedure of receiving side

Pass 2 ms?

RESET

Initialization

SIOCON (Address : 0FE016)

1111x11x2

TB/RB (Address : 2616)

Dummy data

• An interval of 2 ms generated by Timer

• Judgment of completion of receiving

(Receive buffer full flag)

SIOSTS (Address : 2716), bit1?

Read out reception data from

TB/RB (Address : 2616)

• Reception of the first byte data

Receive buffer full flag is set to “0” by reading data.

• Judgment of completion of receiving

(Receive buffer full flag)

SIOSTS (Address : 2716), bit1?

Read out reception data from

TB/RB (Address : 2616)

• Reception of the second byte data.

Receive buffer full flag is set to “0” by reading data.

• SRDY output

SRDY

signal is output by writing data to the TB/RB.

Using the SRDY, set Transmit enable bit

(bit4) of the SIOCON to “1.”

q x: This bit is not used here. Set it to “0” or “1” arbitrarily.

38K2 Datasheet(PDF) 201 Page - Renesas Technology Corp