PCA9500PW datasheet(3/21 Pages) PHILIPS

Part #	PCA9500PW

Description	8-bit I2C and SMBus I/O port with 2-kbit EEPROM

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Manufacturer	PHILIPS [NXP Semiconductors]

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Philips Semiconductors

Product data sheet

PCA9500

8-bit I2C and SMBus I/O port with 2-kbit EEPROM

2004 Sep 30

3

PIN CONFIGURATION – SO, TSSOP

1

2

3

4

5

6

7

8

SW00902

9

10

11

12

13

14

15

16

A0

A1

A2

I/O0

I/O1

I/O2

I/O3

VSS

VDD

SDA

SCL

WC

I/O7

I/O6

I/O5

I/O4

PCA9500

Figure 1. Pin configuration – SO, TSSOP

PIN CONFIGURATION – HVQFN

12

11

10

9

1

2

3

4

SW02004

TOP VIEW

A2

I/O0

I/O1

I/O2

I/O3

I/O4

VSS

I/O5

WC

I/O6

I/O7

SDA

VDD

A0

A1

SCL

Figure 2. Pin configuration – HVQFN

PIN DESCRIPTION

SO, TSSOP

PIN NUMBER

HVQFN

PIN NUMBER

SYMBOL

NAME AND FUNCTION

1,2,3

15, 16, 1

A0–2

Address lines (internal pull-up)

4,5,6,7

2, 3, 4, 5

I/O0 to I/O3

Quasi-bidirectional I/O pins

8

6

VSS

Supply ground

9,10,11,12

7, 8, 9, 10

I/O4 to I/O7

Quasi-bidirectional I/O pins

13

11

WC

Active LOW write control pin

14

12

SCL

I2C Serial Clock

15

13

SDA

I2C Serial Data

16

14

VDD

Supply Voltage

BLOCK DIAGRAM

POWER-ON

RESET

INPUT

FILTER

I2C/SMBus

CONTROL

INPUT/

OUTPUT

PORTS

WRITE pulse

READ pulse

A0

A1

A2

SCL

SDA

VDD

VSS

8-BIT

I/O0

I/O1

I/O2

I/O3

I/O4

I/O5

I/O6

I/O7

SW01074

PCA9500

WC

EEPROM

256 x 8

300 k

Ω

Figure 3. Block diagram

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