MCP23016-I/P Microchip Technology, MCP23016-I/P Datasheet - Page 10

• Manufacturer Part Number: MCP23016-I/P
• Description: 16-Bit I2C I/O Expander
• Manufacturer: Microchip Technology

MCP23016
1.7.5
Two registers contain the value of the port that
generated the interrupt:
• INTCAP0 contains the value of GP0 at time of
• INTCAP1 contains the value of GP1 at time of
These registers are ‘read-only’ registers (A write to
these registers is ignored).
REGISTER 1-9:
REGISTER 1-10:
DS20090B-page 10
bit 7-0
bit 7-0
GP0 change interrupt
GP1 change interrupt
INTERRUPT CAPTURE REGISTERS
ICP0.0:ICP0.7:
change
1 = Logic ‘1’
0 = Logic ‘0’
ICP1.0:ICP1.7:
change
1 = Logic ‘1’
0 = Logic ‘0’
Legend:
R = Readable bit
- n = Value at POR
Legend:
R = Readable bit
- n = Value at POR
ICP0.7
ICP1.7
bit 7
bit 7
R-x
R-x
INTCAP0 - INTERRUPT CAPTURED VALUE FOR PORT REGISTER 0
INTCAP1 - INTERRUPT CAPTURED VALUE FOR PORT REGISTER 1
ICP0.6
ICP1.6
R-x
R-x
Reflects the logic level on the GP0 pins at the time of interrupt due to pin
Reflects the logic level on the GP1 pins at the time of interrupt due to pin
ICP0.5
ICP1.5
R-x
R-x
W = Writable bit
‘1’ = Bit is set
W = Writable bit
‘1’ = Bit is set
ICP0.4
ICP1.4
R-x
R-x
ICP0.3
ICP1.3
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
R-x
R-x
ICP0.2
ICP1.2
R-x
R-x
x = Bit is unknown
x = Bit is unknown
ICP0.1
ICP1.1
R-x
R-x
2003 Microchip Technology Inc.
ICP0.0
ICP1.0
bit 0
bit 0
R-x
R-x