PCAL6524HEAZ datasheet(6/69 Pages) NXP

Part #	PCAL6524HEAZ

Description	Ultra low-voltage translating 24-bit Fm I2C-bus/SMBus I/O expander with Agile I/O features, interrupt output and reset

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Manufacturer	NXP [NXP Semiconductors]

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PCAL6524

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Product data sheet

Rev. 1.1 — 21 September 2016

6 of 69

NXP Semiconductors

PCAL6524

Ultra low-voltage translating 24-bit Fm+ I2C-bus/SMBus I/O expander

5.2 Pin description

Table 3.

Pin description

Symbol

Description

TSSOP32 HUQFN32 Type

SCL

1

29

I

Serial clock line. Connect to VDD(I2C-bus) through a pull-up resistor.

SDA

2

30

I/O

Serial data line. Connect to VDD(I2C-bus) through a pull-up resistor.

VDD(I2C-bus)

3

31

power

supply

Supply voltage of I2C-bus. Connect directly to the VDD of the external

I2C-bus master. Provides voltage-level translation.

INT

4

32

O

Interrupt output. Connect to VDD(I2C-bus) or VDD(P) through a pull-up resistor.

P0_0[1]

5

1

I/O

Port 0 input/output 0.

P0_1[1]

6

2

I/O

Port 0 input/output 1.

P0_2[1]

7

3

I/O

Port 0 input/output 2.

P0_3[1]

8

4

I/O

Port 0 input/output 3.

P0_4[1]

9

5

I/O

Port 0 input/output 4.

P0_5[1]

10

6

I/O

Port 0 input/output 5.

P0_6[1]

11

7

I/O

Port 0 input/output 6.

P0_7[1]

12

8

I/O

Port 0 input/output 7.

P1_0[2]

13

9

I/O

Port 1 input/output 0.

P1_1[2]

14

10

I/O

Port 1 input/output 1.

P1_2[2]

15

11

I/O

Port 1 input/output 2.

P1_3[2]

16

12

I/O

Port 1 input/output 3.

P1_4[2]

17

13

I/O

Port 1 input/output 4.

P1_5[2]

18

14

I/O

Port 1 input/output 5.

P1_6[2]

19

15

I/O

Port 1 input/output 6.

P1_7[2]

20

16

I/O

Port 1 input/output 7.

P2_0[3]

21

17

I/O

Port 2 input/output 0.

P2_1[3]

22

18

I/O

Port 2 input/output 1.

P2_2[3]

23

19

I/O

Port 2 input/output 2.

P2_3[3]

24

20

I/O

Port 2 input/output 3.

P2_4[3]

25

21

I/O

Port 2 input/output 4.

P2_5[3]

26

22

I/O

Port 2 input/output 5.

P2_6[3]

27

23

I/O

Port 2 input/output 6.

P2_7[3]

28

24

I/O

Port 2 input/output 7.

VSS

29

25

ground Supply ground.

ADDR

30

26

I

Address input. Connect directly to VDD(I2C-bus), ground, SCL or SDA.

VDD(P)

31

27

power

supply

Supply voltage of PCAL6524 for Port P.

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