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2016-01-0022

PT0553-4

02/15/16

7

PI4IOE5V9673

Preliminary Datasheet

16-bit I

Details Description

a. Device address

Following a START condition, the bus master must send the address of the slave it is accessing and the

operation it wants to perform (read or write). The address of the PI4IOE5V9673 is shown in bellow. Slave

address pins AD1, and AD0 choose 1 of 16 slave addresses. To conserve power, no internal pull-up resistors

are incorporated on AD2, AD1, and AD0. Address values depending on AD1, and AD0 can be found in

Table “PI4IOE5V9673 address map”.

Remark: The General Call address (0000 0000b) and the Device ID address (1111 100Xb) are reserved

and cannot be used as device address. Failure to follow this requirement will cause the PI4IOE5V9673 not to

acknowledge.

Remark: Reserved I2C-bus addresses must be used with caution since they can interfere with:

• “reserved for future use” I2C-bus addresses (0000 011, 1111 101, 1111 110, 1111 111)

• slave devices that use the 10-bit addressing scheme (1111 0xx)

• High speed mode (Hs-mode) master code (0000 1xx)

PI4IOE5V9673 address

b7(MSB)

b6

b5

b4

b3

b2

b1

b0

Address Byte

A6

A5

A4

A3

A2

A1

A0

R/W

The last bit of the first byte defines the operation to be performed. When set to logic 1 a read is selected,

while a logic 0 selects a write operation.

PI4IOE5V9673 Address maps

AD1

AD0

A6

A5

A4

A3

A2

A1

A0

Address

(Write)

Address

(Read)

SCL

GND

0

0

1

0

1

0

0

28h

29h

SCL

VCC

0

0

1

0

1

0

1

2Ah

2Bh

SDA

GND

0

0

1

0

1

1

0

2Ch

2Dh

SDA

VCC

0

0

1

0

1

1

1

2Eh

2Fh

SCL

SCL

0

0

1

1

0

0

0

38h

39h

SCL

SDA

0

0

1

1

0

0

1

3Ah

3Bh

SDA

SCL

0

0

1

1

0

1

0

3Ch

3Dh

SDA

SDA

0

0

1

1

0

1

1

3Eh

3Fh

GND

GND

0

1

0

0

1

0

0

48h

49h

GND

VCC

0

1

0

0

1

0

1

4Ah

4Bh

VCC

GND

0

1

0

0

1

1

0

4Ch

4Dh

VCC

VCC

0

1

0

0

1

1

1

4Eh

4Fh

GND

SCL

0

1

0

1

1

0

0

58h

59h

GND

SDA

0

1

0

1

1

0

1

5Ah

5Bh

VCC

SCL

0

1

0

1

1

1

0

5Ch

5Dh

VCC

SDA

0

1

0

1

1

1

1

5Eh

5Fh