M62320FP 查看數據表（PDF） - MITSUBISHI ELECTRIC

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M62320FP

8-BIT I/O EXPANDER for I²C BUS

MITSUBISHI ELECTRIC  

MITSUBISHI < STD. LINEAR ICs >

M62320P,FP

8-BIT I/O EXPANDER for I2 C BUS

DIGITAL DATA FORMAT

1. Write mode : I2 C BUS data input to Parallel data output

First

S

SLAVE ADDRESS W

A

I/O SETTING

A

8BIT DATA A

8BIT DATA A

8BIT

DATA

Last

AP

2. Read mode :Parallel data input to I2 C BUS data output

First

S SLAVE ADDRESS W A 8BIT DATA A 8BIT DATA A 8BIT DATA A

8BIT

DATA

Last

AP

Transmission from Master (MCU etc.) to Slave (M62320)

Transmission from Slave (M62320) to Master (MCU etc.)

• S : Start Condition

While SCL level is high, SDA line level should be changed from high to low.

• Slave address

First

MSB

0111

Last

LSB

A2 A1 A0

Lower three bits (A0,A1,A2) are a programmable address.

This IC is accessed only when the lower 3 bits data of slave

address coincide with the data of CS0 to CS2. (refer to the

right table)

• W: Write (SDA = LOW), R : Read (SDA = HIGH)

• Chip select data

MSB

LSB

A2 A1 A0 CS2

000L

001L

010L

CS1 CS0

LL

LH

HL

1 1 1 HHH

(L=Low,H=High)

• A: Acknowledge bit

• I/O setting data (I/O setting of parallel data I/O terminals.)

First

MSB

P7 P6

P5 P4

P3 P2

Last

LSB

P1 P0

• Each bit data corresponds to the I/O state of

the parallel data terminals.

DATA INPUT from parallel data terminals = Low

DATA OUTPUT to parallel data terminals = High

• 8bit data

First

Last

MSB

LSB

D7 D6 D5 D4 D3 D2 D1 D0

• P : Stop condition

While SCL level is high, SDA level should be changed from low to high.

MITSUBISHI ELECTRIC

2/20,1998(rev) ( 6 / 9 )

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