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MCP23008/MCP23S08

8-Bit I/O Expander with Serial Interface

Features

鈥?8-bit remote bidirectional I/O port

- I/O pins default to input

鈥?High-speed I

2

C鈩?interface (MCP23008)

- 100 kHz

- 400 kHz

- 1.7 MHz

鈥?High-speed SPI鈩?interface (MCP23S08)

- 10 MHz

鈥?Hardware address pins

- Three for the MCP23008 to allow up to eight

devices on the bus

- Two for the MCP23S08 to allow up to four

devices using the same chip-select

鈥?Configurable interrupt output pin

- Configurable as active-high, active-low or

open-drain

鈥?Configurable interrupt source

- Interrupt-on-change from configured defaults

or pin change

鈥?Polarity Inversion register to configure the polarity

of the input port data

鈥?External reset input

鈥?Low standby current: 1 碌A (max.)

鈥?Operating voltage:

- 1.8V to 5.5V @ -40擄C to +85擄C (I-Temp)

- 2.7V to 5.5V @ -40擄C to +85擄C (I-Temp)

- 4.5V to 5.5V @ -40擄C to +125擄C (E-Temp)

Package Types

MCP23008

SCL

SDA

A2

A1

A0

RESET

NC

INT

V

SS

PDIP/SOIC

1

2

3

4

5

6

7

8

9

18

17

16

15

14

13

12

11

10

V

DD

GP7

GP6

GP5

GP4

GP3

GP2

GP1

GP0

SSOP

SCL

SDA

A2

A1

A0

RESET

NC

INT

V

SS

N/C

1

2

3

4

5

6

7

8

9

10

20

19

18

17

16

15

14

13

12

11

V

DD

GP7

GP6

GP5

GP4

GP3

GP2

GP1

GP0

N/C

MCP23S08

SCK

SI

SO

A1

A0

RESET

CS

INT

V

SS

PDIP/SOIC

1

2

3

4

5

6

7

8

9

18

17

16

15

14

13

12

11

10

V

DD

GP7

GP6

GP5

GP4

GP3

GP2

GP1

GP0

Packages

18-pin PDIP (300 mil)

18-pin SOIC (300 mil)

20-pin SSOP

SSOP

SCK

SI

SO

A1

A0

RESET

CS

INT

V

SS

N/C

1

2

3

4

5

6

7

8

9

10

20

19

18

17

16

15

14

13

12

11

V

DD

GP7

GP6

GP5

GP4

GP3

GP2

GP1

GP0

N/C

漏

2005 Microchip Technology Inc.

MCP23S08

MCP23S08

MCP23008

MCP23008

DS21919B-page 1

next

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