PCA9621

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© NXP B.V. 2011. All rights reserved.

Product data sheet

Rev. 1 — 9 March 2011

3 of 18

NXP Semiconductors

PCA9621

65 mA 8-bit 2-wire bus output port

6.

Pinning information

6.1 Pinning

6.2 Pin description

Fig 2.

Pin configuration for SO16

Fig 3.

Pin configuration for TSSOP16

PCA9621D

A0

A1

SDA

RESET

SCL

P0

A2

P1

P7

P2

P6

P3

P5

P4

002aaf381

1

2

3

4

5

6

7

8

10

9

12

11

14

13

16

15

PCA9621PW

002aaf382

1

2

3

4

5

6

7

8

10

9

12

11

14

13

16

15

A0

A1

SDA

RESET

SCL

P0

A2

P1

P7

P2

P6

P3

P5

P4

Table 2.

Pin description

Symbol

Pin

Description

A0

1

address input 0

A1

2

address input 1

RESET

3

active LOW reset input

P0

4

output port 0

P1

5

output port 1

P2

6

output port 2

P3

7

output port 3

8

negative supply (ground)

P4

9

output port 4

P5

10

output port 5

P6

11

output port 6

P7

12

output port 7

A2

13

address input 2

SCL

14

serial clock line

SDA

15

serial data line

16

positive supply