MCP23009-E/P Microchip Technology, MCP23009-E/P Datasheet - Page 18

• 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

MCP23009/MCP23S09
1.6.3
The GPINTEN register controls the interrupt-on-
change feature for each pin.
If a bit is set, the corresponding pin is enabled for
interrupt-on-change. The DEFVAL and INTCON
registers must also be configured if any pins are
enabled for interrupt-on-change.
REGISTER 1-3:
DS22121B-page 18
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 7-0
GPINT7
R/W-0
INTERRUPT-ON-CHANGE
CONTROL REGISTER
GPINT7:GPINT0: General purpose I/O interrupt-on-change pins <7:0>
1 = Enable GPIO input pin for interrupt-on-change event
0 = Disable GPIO input pin for interrupt-on-change event
Refer to INTCON and DEFVAL.
GPINT6
R/W-0
GPINTEN – INTERRUPT-ON-CHANGE PINS
W = Writable bit
‘1’ = Bit is set
GPINT5
R/W-0
GPINT4
R/W-0
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
GPINT3
R/W-0
GPINT2
R/W-0
© 2009 Microchip Technology Inc.
x = Bit is unknown
GPINT1
R/W-0
GPINT0
R/W-0
bit 0