PCA9701_PCA9702_3

© NXP B.V. 2008. All rights reserved.

Product data sheet

Rev. 03 — 3 December 2008

5 of 28

NXP Semiconductors

PCA9701; PCA9702

18 V tolerant SPI 16-bit/8-bit GPI with INT

6.2 Pin description

[1]

ground for proper device operation. For enhanced thermal, electrical, and board level performance, the exposed pad needs to be

soldered to the board using a corresponding thermal pad on the board and for proper heat conduction through the board, thermal vias

need to be incorporated in the PCB in the thermal pad region.

Table 2.

Pin description

Symbol

Pin

Type

Description

SO24, TSSOP24

HWQFN24

TSSOP16

SDOUT

1

22

1

output

3-state serial data output; normally high-impedance

INT

2

23

2

output

open-drain interrupt output (active LOW)

INT_EN

3

24

3

input

interrupt output enable

1 = interrupt is enabled

0 = interrupt is disabled and high-impedance

IN0

4

1

4

input

input port 0

IN1

5

2

5

input

input port 1

IN2

6

3

6

input

input port 2

IN3

7

4

7

input

input port 3

IN4

8

5

9

input

input port 4

IN5

9

6

10

input

input port 5

IN6

10

7

11

input

input port 6

IN7

11

8

12

input

input port 7

12

9[1]

8

ground

ground supply

IN8

13

10

-

input

input port 8

IN9

14

11

-

input

input port 9

IN10

15

12

-

input

input port 10

IN11

16

13

-

input

input port 11

IN12

17

14

-

input

input port 12

IN13

18

15

-

input

input port 13

IN14

19

16

-

input

input port 14

IN15

20

17

-

input

input port 15

CS

21

18

13

input

chip select (active LOW)

SCLK

22

19

14

input

serial input clock

SDIN

23

20

15

input

serial data input (20

µA pull-down)

24

21

16

supply

supply voltage