MCP23009-E/MG Microchip Technology, MCP23009-E/MG Datasheet - Page 23

• 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

1.6.8
The INTF register reflects the interrupt condition on the
port pins of any pin that is enabled for interrupts via the
GPINTEN register. A ‘set’ bit indicates that the
associated pin caused the interrupt.
This register is ‘read only’. Writes to this register will be
ignored.
REGISTER 1-8:
© 2009 Microchip Technology Inc.
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 7-0
INT7
R-0
INTERRUPT FLAG REGISTER
INT7:INT0: Reflects the interrupt condition on the port. Will reflect the change only if interrupts are
enabled (GPINTEN) <7:0>.
1 = Pin caused interrupt
0 = Interrupt not pending
INT6
R-0
INTF – INTERRUPT FLAG REGISTER
W = Writable bit
‘1’ = Bit is set
INT5
R-0
INT4
R-0
‘0’ = Bit is cleared
U = Unimplemented bit, read as ‘0’
MCP23009/MCP23S09
INT3
R-0
INT2
R-0
x = Bit is unknown
INT1
R-0
DS22121B-page 23
INT0
R-0
bit 0