MITSUBISHI < STD. LINEAR ICs >

M62320P,FP

2/20,1998(rev) (

/ 9 )

MITSUBISHI ELECTRIC

8-BIT I/O EXPANDER for I C BUS

2

APPLICATION

I/O port expansion for a microcontroller.

Data conversion between serial and parallel in

microcontroller peripherals.

BLOCK DIAGRAM

CS0 CS1 CS2

CHIP-SELECT

POWER-ON

RESET

D0

D1

D2

D3

D4

D5

D6

SHIFT

REGISTER

Å@

OUTPUT DATA

LATCH

8

D7

I/O PORT

8

8

GND

8

I/O SETTING

DATA LATCH

Output Data

8

INPUT DATA

LATCH

8

Input Data

1

SO

PIN CONFIGURATION(TOP VIEW)

Outline 16P4(P)

16P2N(FP)

1

2

3

4

5

6

7

8

SCL

SDA

GND

CS0

CS1

CS2

16

15

14

13

12

11

10

9

D0

D1

D2

D3

D7

D6

D5

D4

SO

14

15

16

SCL

SDA

2

3

13

8

4

5

6

7

9

10

11

12

Input/Output

1

GENERAL DESCRIPTION

The M62320P/FP is a CMOS 8-bit I/O expander which has

serial to parallel and parallel to serial data converting

functions.

It can communicate with a microcontroller via few wiring

thanks to the adoption of the two-line I C BUS.

Parallel data I/O terminal can be set to input or output

mode alternatively in individual bits.

Maximum 8 ICs can be connected to a bus by using three

chip-select pins, so that it is possible to handle up to 64 bits

data.

2

FEATURES

• Simple two-line (SCL and SDA) communication with a

microcontroller.

• 8-bit data conversion between serial and parallel by

I C BUS.

• Built-in power-on reset.

2

I C BUS

TRANSCEIVER

2