PCA9549_1

© Koninklijke Philips Electronics N.V. 2006. All rights reserved.

Product data sheet

Rev. 01 — 11 July 2006

10 of 24

Philips Semiconductors

PCA9549

7.4 Bus transactions

Data is transmitted to the PCA9549 control register using the Write mode as shown in

Figure 12.

Data is read from the PCA9549 using the Read mode as shown in Figure 13.

8.

Limiting values

[1]

The performance capability of a high-performance integrated circuit in conjunction with its thermal

environment can create junction temperatures which are detrimental to reliability. The maximum junction

temperature of this integrated circuit should not exceed 125

°C.

Fig 12. Write control register

Fig 13. Read control register

002aac430

B7

B6

B5

B4

B3

B2

B1

B0

1

1

0

A2

A1

A0

0

A

S

1

A

P

slave address

START condition

R/W

acknowledge

from slave

acknowledge

from slave

control register

SDA

STOP condition

002aac431

1

1

0

A2

A1

A0

1

A

S

1

A

P

slave address

START condition

R/W

acknowledge

from slave

no acknowledge

from master

control register

SDA

STOP condition

last byte

B7

B6

B5

B4

B3

B2

B1

B0

Table 5.

Limiting values

In accordance with the Absolute Maximum Rating System (IEC 60134).[1]

Symbol

Parameter

Conditions

Min

Max

Unit

supply voltage

−0.5

+7.0

V

input voltage

−0.5

+7.0

V

input current

−20

+20

mA

output current

−25

+25

mA

supply current

−100

+100

mA

ground supply current

−100

+100

mA

total power dissipation

-

400

mW

storage temperature

−60

+150

°C

ambient temperature

operating

−40

+85

°C