MCP23S17 Microchip Technology, MCP23S17 Datasheet - Page 2
MCP23S17
Manufacturer Part Number
MCP23S17
Description
16-Bit I/O Expander with Serial Interface
Manufacturer
Microchip Technology
Datasheet
1.MCP23S17.pdf
(48 pages)
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MCP23017/MCP23S17
Functional Block Diagram
DS21952B-page 2
RESET
A2:A0
SCK
INTB
SDA
INTA
SCL
SO
CS
SI
3
Decode
Interrupt
Logic
I
2
SPI
C™
MCP23S17
MCP23017
Configuration/
Serializer/
Deserializer
Registers
Control
Control
8
16
GPIO
GPIO
© 2007 Microchip Technology Inc.
GPA7
GPA6
GPA5
GPA4
GPA3
GPA2
GPA1
GPA0
GPB7
GPB6
GPB5
GPB4
GPB3
GPB2
GPB1
GPB0
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