Datasheet

ManualsBrandsNXP SEMICONDUCTORS ManualsInterface ICsInterface IC - I/O extensions POR I²C 400 kHz SSOP 24

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1999 Apr 07 4

Philips Semiconductors Product speciﬁcation

Remote 16-bit I/O expander for I

2

C-bus

PCF8575

4 BLOCK DIAGRAM

Fig.1 Block diagram.

handbook, full pagewidth

MGL537

I

2

C-BUS

CONTROL

INPUT

FILTER

1

2

3

22

23

21

INTERRUPT

LOGIC

16 BITS

P00 to P07

4 to 11

P10 to P17

13 to 20

I/O

PORT

SHIFT

REGISTER

LP FILTER

WRITE pulse

READ pulse

POWER-ON

RESET

24

12

V

DD

V

SS

SDA

SCL

A2

A1

A0

INT

PCF8575