MCP23016-I/P Microchip Technology, MCP23016-I/P Datasheet - Page 8

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

MCP23016
1.7.3
These registers allow the user to configure the polarity
of the input port data (GP0 and GP1). If a bit in this reg-
ister is set, the corresponding input port (GPn) data bit
polarity will be inverted.
• IPOL0 (controls the polarity of GP0)
• IPOL1 (controls the polarity of GP1)
REGISTER 1-5:
REGISTER 1-6:
DS20090B-page 8
bit 7-0
bit 7-0
INPUT POLARITY REGISTERS
IGP0.0:IGP0.7:
1 = Corresponding GP0 bit is inverted
0 = Corresponding GP0 bit is not inverted
IGP1.0:IGP1.7:
1 = Corresponding GP1 bit is inverted
0 = Corresponding GP1 bit is not inverted
Legend:
R = Readable bit
- n = Value at POR
Legend:
R = Readable bit
- n = Value at POR
IGP0.7
IGP1.7
R/W-0
R/W-0
bit 7
bit 7
IPOL0 - INPUT POLARITY PORT REGISTER 0
IPOL1 - INPUT POLARITY PORT REGISTER 1
IGP0.6
IGP1.6
R/W-0
R/W-0
Controls the polarity inversion for the input pins
Controls the polarity inversion for the input pins
IGP0.5
IGP1.6
R/W-0
R/W-0
W = Writable bit
‘1’ = Bit is set
W = Writable bit
‘1’ = Bit is set
IGP0.4
IGP1.4
R/W-0
R/W-0
IGP0.3
IGP1.3
R/W-0
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
R/W-0
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
IGP0.2
IGP1.2
R/W-0
R/W-0
x = Bit is unknown
x = Bit is unknown
IGP0.1
IGP1.1
R/W-0
R/W-0
2003 Microchip Technology Inc.
IGP0.0
IGP1.0
R/W-0
R/W-0
bit 0
bit 0