PCA9545A 데이터 시트보기 (PDF) - Philips Electronics

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PCA9545A

4-channel I2C switch with interrupt logic and reset

Philips Electronics 

Philips Semiconductors

PCA9545A

4-channel I2C switch with interrupt logic and reset

8.5 Bus transactions

Data is transmitted to the PCA9545A control register using the Write mode as shown in

Figure 12.

slave address

control register

SDA S 1 1 1 0 0 A1 A0 0 A X X X X B3 B2 B1 B0 A P

START condition

R/W acknowledge

from slave

acknowledge

from slave

STOP condition

002aab172

Fig 12. Write control register

Data is read from PCA9545A using the Read mode as shown in Figure 13.

slave address

control register

last byte

SDA S 1 1 1 0 0 A1 A0 1 A INT3 INT2 INT1 INT0 B3 B2 B1 B0 NA P

START condition

Fig 13. Read control register

R/W acknowledge

from slave

no acknowledge

from master

STOP condition

002aab173

9397 750 14311

Product data sheet

Rev. 03 — 3 March 2005

© Koninklijke Philips Electronics N.V. 2005. All rights reserved.

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