MCP23009ESS datasheet(15/50 Pages) MICROCHIP

部件名	MCP23009ESS

功能描述	8-Bit I/O Expander with Open-Drain Outputs

PDF	50 Pages

Scroll/Zoom	100%

制造商	MICROCHIP [Microchip Technology]

网页	http://www.microchip.com

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15 / 50 page

DS22121B-page 15

MCP23009/MCP23S09

1.6

Configuration and Control

Registers

There are eleven (11) registers associated with the

MCP23X09 as shown in Table 1-4.

TABLE 1-4:

CONFIGURATION AND CONTROL REGISTER

Name

Address

(hex)

bit 7

bit 6

bit 5

bit 4

bit 3

bit 2

bit 1

bit 0

POR/RST

value

IODIRA

IO7

IO6

IO5

IO4

IO3

IO2

IO1

IO0

1111 1111

IPOLA

IP7

IP6

IP5

IP4

IP3

IP2

IP1

IP0

0000 0000

GPINTENA

GPINT7

GPINT6

GPINT5

GPINT4

GPINT3

GPINT2

GPINT1

GPINT0

0000 0000

DEFVALA

DEF7

DEF6

DEF5

DEF4

DEF3

DEF2

DEF1

DEF0

0000 0000

INTCONA

IOC7IOC6IOC5

IOC4IOC3IOC2IOC1

IOC0

0000 0000

IOCON

—

SEQOP

—

—ODR

INTPOL

INTCC

0000 0000

GPPUA

PU7

PU6

PU5

PU4

PU3

PU2

PU1

PU0

0000 0000

INTFA

INT7

INT6

INT5

INT4

INT3

INT2

INT1

INTO

0000 0000

INTCAPA

ICP7ICP6ICP5ICP4ICP3ICP2ICP1

ICP0

0000 0000

GPIOA

GP7

GP6

GP5

GP4

GP3

GP2

GP1

GP0

0000 0000

OLATA

OL7

OL6

OL5

OL4

OL3

OL2

OL1

OL0

0000 0000

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