MCP23018 Просмотр технического описания (PDF) - Microchip Technology

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MCP23018

16-Bit I/O Expander with Open-Drain Outputs

Microchip Technology 

MCP23018/MCP23S18

TABLE 1-2: SPI PINOUT DESCRIPTION (MCP23S18)

Pin

Name

28L

PDIP/

SOIC

24L

QFN

Pin

Type

Standard Function

GPB0

3

24 I/O Bidirectional I/O Pin (5.5 volt tolerant inputs; open-drain outputs). Can be enabled

for interrupt on change, and/or internal pull-up resistor.

GPB1

4

1 I/O Bidirectional I/O Pin (5.5 volt tolerant inputs; open-drain outputs). Can be enabled

for interrupt on change, and/or internal pull-up resistor.

GPB2

5

2 I/O Bidirectional I/O Pin (5.5 volt tolerant inputs; open-drain outputs). Can be enabled

for interrupt on change, and/or internal pull-up resistor.

GPB3

6

3 I/O Bidirectional I/O Pin (5.5 volt tolerant inputs; open-drain outputs). Can be enabled

for interrupt on change, and/or internal pull-up resistor.

GPB4

7

4 I/O Bidirectional I/O Pin (5.5 volt tolerant inputs; open-drain outputs). Can be enabled

for interrupt on change, and/or internal pull-up resistor.

GPB5

8

5 I/O Bidirectional I/O Pin (5.5 volt tolerant inputs; open-drain outputs). Can be enabled

for interrupt on change, and/or internal pull-up resistor.

GPB6

9

6 I/O Bidirectional I/O Pin (5.5 volt tolerant inputs; open-drain outputs). Can be enabled

for interrupt on change, and/or internal pull-up resistor.

GPB7

10

7 I/O Bidirectional I/O Pin (5.5 volt tolerant inputs; open-drain outputs). Can be enabled

for interrupt on change, and/or internal pull-up resistor.

VDD

VSS

CS

SCK

11

8

P Power (high current capable)

1

23 P Ground (high current capable)

12

9

I Chip select

13 10 I Serial clock input

SI

14 11

I Serial data input

SO

15 12 O Serial data out

RESET 16 13 I Hardware reset (must be externally biased)

INTB

18 — O Interrupt output for port B. Can be configured as active high, active low, or open

drain.

INTA

19 14 O Interrupt output for port A. Can be configured as active high, active low, or open

drain.

GPA0

20 15 I/O Bidirectional I/O Pin (5.5 volt tolerant inputs; open-drain outputs). Can be enabled

for interrupt on change, and/or internal pull-up resistor.

GPA1

21 16 I/O Bidirectional I/O Pin (5.5 volt tolerant inputs; open-drain outputs). Can be enabled

for interrupt on change, and/or internal pull-up resistor.

GPA2

22 17 I/O Bidirectional I/O Pin (5.5 volt tolerant inputs; open-drain outputs). Can be enabled

for interrupt on change, and/or internal pull-up resistor.

GPA3

23 18 I/O Bidirectional I/O Pin (5.5 volt tolerant inputs; open-drain outputs). Can be enabled

for interrupt on change, and/or internal pull-up resistor.

GPA4

24 19 I/O Bidirectional I/O Pin (5.5 volt tolerant inputs; open-drain outputs). Can be enabled

for interrupt on change, and/or internal pull-up resistor.

GPA5

25 20 I/O Bidirectional I/O Pin (5.5 volt tolerant inputs; open-drain outputs). Can be enabled

for interrupt on change, and/or internal pull-up resistor.

GPA6

26 21 I/O Bidirectional I/O Pin (5.5 volt tolerant inputs; open-drain outputs). Can be enabled

for interrupt on change, and/or internal pull-up resistor.

GPA7

NC

EP

27 22

2, 17, —

28

— 25

I/O Bidirectional I/O Pin (5.5 volt tolerant inputs; open-drain outputs). Can be enabled

for interrupt on change, and/or internal pull-up resistor.

Not connected

— Exposed Thermal Pad (EP). Do not electrically connect, or connect to VSS.

DS22103A-page 6

© 2008 Microchip Technology Inc.

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