PCA9539D 查看數據表（PDF） - Philips Electronics

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PCA9539D

16-bit I2C and SMBus, low power I/O port with interrupt and reset

Philips Electronics 

Philips Semiconductors

16-bit I2C and SMBus, low power I/O port with interrupt

Product data sheet

PCA9539

START

SCL

ACK OR READ CYCLE

SDA

30%

RESET

50%

tREC

I/Ox

50%

tRESET

50%

tW

Figure 15. Definition of RESET timing

tRESET

50%

I/O configured as inputs

SW02340

70 %

SCL

2

1

0

A

P

30 %

SDA

tPS

tPH

INPUT

tIV

50 %

tIR

INT

SW02329

Figure 16. Expanded view of Read input port register

70 %

SCL

2

1

0

A

P

30 %

2004 Sep 30

SDA

tPV

OUTPUT

50 %

SW02330

Figure 17. Expanded view of Write to output port register

15

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