M62320GP

REJ03D0909-0100 Rev.1.00 Mar 25, 2008

Page 7 of 10

Functional Description

All parallel data I/O terminals are set to the input-state after power-on. In case any terminals need to be set to the

output state, the corresponding terminals should be set during the write mode. This setting is hold until a next setting.

In the write mode, 8 bits data can be transmitted from the I

slave address and I/O setting.

In the read mode, 8 bits data can be transmitted from the parallel ports to the I

slave address setting.

In the case of a changing between the write-and read-mode, the data must be transmitted again from the starting

condition.

• In a case of a data conversion from serial to parallel.

SDA

SCL

1

2

3

4

5

6

7

8

12345678

A1 A0

A2

11

1

00

A

P2 P1

P3

P5 P4

P6

P7

P0

A

D12 D11

D13

D15 D14

D16

D17

D10

A

D22 D21

D23

D25 D24

D26

D27

D20

A

Hi-Z

D0

to

D7

DATA

DATA

I/O setting byte

Slave address

Transmission from a master (MCU etc.)

Transmission from a slave (M62320)

Start

condition

Stop

condition

Data output

Data output

• In a case of a data conversion from parallel to serial.

All I/O setting resistors are set to low (input) in the write mode, before a parallel data is read. (All I/O setting

resistors are set to the input mode after power-on).

SDA

Slave address

I/O setting byte

SCL

1

2

3

4

5

6

7

8

12345678

A1 A0

A2

11

1

00

A

P2 P1

P3

P5 P4

P6

P7

P0

A

Hi-Z

D0 to D7

output

SDA

SCL

1234567

8

A1 A0

A2

11

1

01

A

D12

D13

D15 D14

D16

D17

D11 D10

D32 D31

D33

D35 D34

A

D36

D37

D30

A

D42

D43

D45 D44

D46

D47

D41 D40

A

1234567

8

Hi-Z

D0 to D7

output

DATA

DATA

DATA

Slave address

D0 to D7

input

(example)

Transmission from a master (MCU etc.)

Transmission from a slave (M62320)

Start

condition

Start

condition

Stop

condition

Data latch

Data latch

Data latch