MCP23018 MICROCHIP [Microchip Technology], MCP23018 Datasheet - Page 14

• Manufacturer Part Number: MCP23018
• Description: 16-Bit I/O Expander with Open-Drain Outputs
• Manufacturer: MICROCHIP [Microchip Technology]

MCP23018/MCP23S18
FIGURE 1-8:
FIGURE 1-9:
DS22103A-page 14
CS
S
0
0
1
1
Device Opcode
Device Opcode
0
0
I
SPI ADDRESSING REGISTERS
2
C™ ADDRESSING REGISTERS
0
0
A2 A1 A0
0
The ACKs are provided by the MCP23X18.
0
0
R/W = 0
R/W
0
ACK
A7
A6
A7
A5
A6
Register Address
A4
A5
Register Address
A3
A4
A2
A3
© 2008 Microchip Technology Inc.
A1
A2
A0
A1
A0
ACK