MCP23009-E/MG Microchip Technology, MCP23009-E/MG Datasheet - Page 20

• Manufacturer Part Number: MCP23009-E/MG
• Description: IC I/O EXPANDER I2C 8B 16QFN
• Manufacturer: Microchip Technology
• Type: I/O Expanderr

Specifications of MCP23009-E/MG

• Package / Case: 16-QFN
• 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: Surface Mount
• Operating Supply Voltage: 1.8 V to 5.5 V
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Chip Configuration: 8bit
• Bus Frequency: 3.4MHz
• Interface Type: I2C, Serial, SPI
• No. Of I/o's: 9
• Supply Voltage Range: 1.8V To 5.5V
• Digital Ic Case Style: QFN
• No. Of Pins: 16
• Svhc: No SVHC (15-Dec-2010)
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

MCP23009/MCP23S09
1.6.5
The INTCON register controls how the associated pin
value is compared for the interrupt-on-change feature.
If a bit is set, the corresponding I/O pin is compared
against the associated bit in the DEFVAL register. If a
bit value is clear, the corresponding I/O pin is compared
against the previous value.
REGISTER 1-5:
DS22121B-page 20
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 7-0
R/W-0
IOC7
INTERRUPT CONTROL REGISTER
IOC7:IOC0: Controls how the associated pin value is compared for interrupt-on-change <7:0>.
1 = Pin value is compared against the associated bit is DEFVAL register
0 = Pin value is compared against the previous pin value
Refer to DEFVAL and GPINTEN.
R/W-0
IOC6
INTCON – INTERRUPT-ON-CHANGE CONTROL REGISTER
W = Writable bit
‘1’ = Bit is set
R/W-0
IOC5
R/W-0
IOC4
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
R/W-0
IOC3
R/W-0
IOC2
© 2009 Microchip Technology Inc.
x = Bit is unknown
R/W-0
IOC1
R/W-0
IOC0
bit 0