MCP23009-E/P Microchip Technology, MCP23009-E/P Datasheet - Page 14
MCP23009-E/P
Manufacturer Part Number
MCP23009-E/P
Description
IC I/O EXPANDER I2C 8B 18DIP
Manufacturer
Microchip Technology
Specifications of MCP23009-E/P
Interface
I²C
Number Of I /o
8
Interrupt Output
Yes
Frequency - Clock
3.4MHz
Voltage - Supply
1.8 V ~ 5.5 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Through Hole
Package / Case
18-DIP (0.300", 7.62mm)
Chip Configuration
8 Bit
Bus Frequency
3.4MHz
Ic Interface Type
I2C
No. Of I/o's
8
Supply Voltage Range
1.8V To 5.5V
Digital Ic Case Style
DIP
No. Of Pins
18
Termination Type
DIP
Filter Terminals
DIP
Rohs Compliant
Yes
Features
Open-drain Outputs
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MCP23009-E/P
Manufacturer:
TI
Quantity:
71
MCP23009/MCP23S09
1.5
GPIO Port
The GPIO module is a general purpose 8-bit wide
bidirectional port.
The outputs are open-drain.
The GPIO module contains the data ports (GPIOn),
internal pull up resistors and the Output Latches
(OLATn).
The pull up resistors are individually configured and
can be enabled when the pin is configured as an input
or output.
Reading the GPIOn register reads the value on the
port. Reading the OLATn register only reads the
latches, not the actual value on the port.
Writing to the GPIOn register actually causes a write to
the latches (OLATn). Writing to the OLATn register
forces the associated output drivers to drive to the level
in OLATn. Pins configured as inputs turn off the
associated output driver and put it in high-impedance.
© 2009 Microchip Technology Inc.
DS22121B-page 14