PCA9538 查看數據表（PDF） - Philips Electronics

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PCA9538

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

Philips Electronics 

Philips Semiconductors

8-bit I2C and SMBus low power I/O port

with interrupt and reset

Product data sheet

PCA9538

PIN CONFIGURATION — SO, TSSOP

A0 1

A1 2

RESET 3

I/O0 4

I/O1 5

I/O2 6

I/O3 7

VSS 8

16 VDD

15 SDA

14 SCL

13 INT

12 I/O7

11 I/O6

10 I/O5

9 I/O4

SW02172

Figure 1. Pin configuration — SO, TSSOP

PIN CONFIGURATION — HVQFN

A1 A0 VDD SDA

RESET 1

I/O0 2

I/O1 3

I/O2 4

12 SCL

11 INT

10 I/O7

9 I/O6

I/O3 VSS I/O4 I/O5

TOP VIEW

SW02173

Figure 2. Pin Configuration — HVQFN

PIN DESCRIPTION

SO, TSSOP

PIN NUMBER

1

2

3

4–7

8

9–12

13

14

15

16

HVQFN

PIN NUMBER

15

16

1

2–5

6

7–10

11

12

13

14

SYMBOL

A0

A1

RESET

I/O0–3

VSS

I/O4–7

INT

SCL

SDA

VDD

FUNCTION

Address input 0

Address input 1

Active LOW reset input

I/O0 to I/O3

Supply ground

I/O4 to I/O7

Interrupt output (open drain)

Serial clock line

Serial data line

Supply voltage

BLOCK DIAGRAM

A0

A1

SCL

SDA

VDD

RESET

VSS

PCA9538

INPUT

FILTER

I2C/SMBUS

CONTROL

8-BIT

WRITE pulse

INPUT/

OUTPUT

PORTS

READ pulse

POWER-ON

RESET

NOTE: ALL I/Os ARE SET TO INPUTS AT RESET

LP

FILTER

I/O0

I/O1

I/O2

I/O3

I/O4

I/O5

I/O6

I/O7

VCC

INT

SW02174

Figure 3. Block diagram

2004 Oct 05

3

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