MCP23018-E/SO Microchip Technology, MCP23018-E/SO Datasheet - Page 26

• Manufacturer Part Number: MCP23018-E/SO
• Description: IC I/O EXPANDER I2C 16B 28SOIC
• Manufacturer: Microchip Technology

Specifications of MCP23018-E/SO

• Interface: I²C
• Number Of I /o: 16
• 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
• Package / Case: 28-SOIC (7.5mm Width)
• Chip Configuration: 16 Bit
• Bus Frequency: 3.4MHz
• Ic Interface Type: I2C
• No. Of I/o's: 16
• Supply Voltage Range: 1.8V To 5.5V
• Digital Ic Case Style: SOIC
• No. Of Pins: 28
• Termination Type: SMD
• Filter Terminals: SMD
• Rohs Compliant: Yes
• Delay Time: 50ns
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

MCP23018/MCP23S18
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 1-10:
DS22103A-page 26
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
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
INT3
R-0
INT2
R-0
© 2008 Microchip Technology Inc.
x = Bit is unknown
INT1
R-0
INT0
R-0
bit 0