PCA9500 查看數據表（PDF） - Philips Electronics

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PCA9500

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

Philips Electronics 

Philips Semiconductors

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

Product data sheet

PCA9500

PIN CONFIGURATION – SO, TSSOP

PIN CONFIGURATION – HVQFN

A0 1

A1 2

A2 3

I/O0 4

I/O1 5

I/O2 6

I/O3 7

VSS 8

PCA9500

16 VDD

15 SDA

14 SCL

13 WC

12 I/O7

11 I/O6

10 I/O5

9 I/O4

SW00902

Figure 1. Pin configuration – SO, TSSOP

A1 A0 VDD SDA

A2 1

I/O0 2

I/O1 3

I/O2 4

12 SCL

11 WC

10 I/O7

9 I/O6

I/O3 VSS I/O4 I/O5

TOP VIEW

SW02004

Figure 2. Pin configuration – HVQFN

PIN DESCRIPTION

SO, TSSOP

PIN NUMBER

1,2,3

4,5,6,7

8

9,10,11,12

13

14

15

16

HVQFN

PIN NUMBER

15, 16, 1

2, 3, 4, 5

6

7, 8, 9, 10

11

12

13

14

SYMBOL

A0–2

I/O0 to I/O3

VSS

I/O4 to I/O7

WC

SCL

SDA

VDD

NAME AND FUNCTION

Address lines (internal pull-up)

Quasi-bidirectional I/O pins

Supply ground

Quasi-bidirectional I/O pins

Active LOW write control pin

I2C Serial Clock

I2C Serial Data

Supply Voltage

BLOCK DIAGRAM

PCA9500

A0

A1

A2

SCL

SDA

INPUT

FILTER

300 kΩ

I2C/SMBus

CONTROL

VDD

VSS

WC

POWER-ON

RESET

EEPROM

256 x 8

8-BIT

WRITE pulse

INPUT/

OUTPUT

PORTS

READ pulse

Figure 3. Block diagram

I/O0

I/O1

I/O2

I/O3

I/O4

I/O5

I/O6

I/O7

SW01074

2004 Sep 30

3

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