M38005M2DXXXFP View Datasheet(PDF) - MITSUBISHI ELECTRIC

Part Name

Description

Manufacturer

M38005M2DXXXFP

8-BIT SINGLE-CHIP MICROCOMPUTER

MITSUBISHI ELECTRIC  

APPLICATION

2.3 Serial I/O

RESET

q X : This bit is not used in this application.

Set it to “0” or “1.” It’s value can be disregarded.

Initialization

SIOCON (Address : 1A16 ) 1111X11X2

N

Pass 2 ms?

Y

TB/RB (Address : 1816 ) Dummy data

SIOSTS (Address : 1916 ), bit1?

0

1

Read out reception data from

TB/RB (Address : 1816 )

q An interval of 2 ms is generated by a timer.

q SRDY output

SRDY signal is output by writing data to

the TB/RB.

Using the SRDY , the transmit enabled bit

(bit4) of the SIOCON is set to “1.”

q Check a completion of receiving

(Receive buffer full flag)

q Receive the first byte data.

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

0

SIOSTS (Address : 1916 ), bit1?

1

Read out reception data from

TB/RB (Address : 1816 )

q Check a completion of receiving

(Receive buffer full flag)

q Receive the second byte data.

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

Fig. 2.3.18 Control procedure at a receiving side [Communication using a clock synchronous

serial I/O]

3800 GROUP USER’S MANUAL

2-35

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