MCP23009 데이터 시트보기 (PDF) - Microchip Technology

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MCP23009

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

Microchip Technology 

MCP23009/MCP23S09

FIGURE 1-8:

I2C™ ADDRESSING REGISTERS

S 0 1 0 0 A2 A1 A0 0 ACK A7 A6 A5 A4 A3 A2 A1 A0 ACK

Device Opcode

R/W = 0

Register Address

The ACKs are provided by the MCP23009.

FIGURE 1-9:

SPI ADDRESSING REGISTERS

CS

0 1 0 0 0 0 0 R/W A7 A6 A5 A4 A3 A2 A1 A0

Device Opcode

Register Address

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DS20002121C-page 13

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