MCP23009T 查看數據表（PDF） - Microchip Technology

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MCP23009T

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

Microchip Technology 

MCP23009/MCP23S09

FIGURE 1-1:

MCP23009 I2C™ DEVICE PROTOCOL

S OP W ADDR

DIN .... DIN

P

SR OP R DOUT .... DOUT

P

SR OP W ADDR .... DIN

P

P

S OP R

DOUT .... DOUT

P

SR OP R DOUT .... DOUT

P

SR OP W ADDR DIN .... DIN

P

P

Byte and Sequential Write

Byte S OP W ADDR

DIN

P

Sequential S OP W ADDR

DIN .... DIN

P

Byte and Sequential Read

Byte S OP W ADDR

SR OP R DOUT

P

Sequential S OP W ADDR

SR OP R DOUT .... DOUT

P

Legend:

S - Start

SR - Restart

P - Stop

W - Write

R - Read

OP - Device opcode

ADDR - Device address

DOUT - Data out from MCP23009

DIN - Data in to MCP23009

DS20002121C-page 8

 2009-2014 Microchip Technology Inc.

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