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MCP23016-I/ML Datasheet(PDF) 8 Page - Microchip Technology

Part # MCP23016-I/ML
Description  16-Bit I2C??I/O Expander
PDF  38 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MCP23016-I/ML Datasheet(HTML) 8 Page - Microchip Technology

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MCP23016
DS20090C-page 8
© 2007 Microchip Technology Inc.
1.7.3
INPUT POLARITY REGISTERS
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:
IPOL0 - INPUT POLARITY PORT REGISTER 0
REGISTER 1-6:
IPOL1 - INPUT POLARITY PORT REGISTER 1
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
IGP0.7
IGP0.6
IGP0.5
IGP0.4
IGP0.3
IGP0.2
IGP0.1
IGP0.0
bit 7
bit 0
bit 7-0
IGP0.0:IGP0.7: Controls the polarity inversion for the input pins
1
= Corresponding GP0 bit is inverted
0
= Corresponding GP0 bit is not inverted
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
- n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
IGP1.7
IGP1.6
IGP1.6
IGP1.4
IGP1.3
IGP1.2
IGP1.1
IGP1.0
bit 7
bit 0
bit 7-0
IGP1.0:IGP1.7: Controls the polarity inversion for the input pins
1
= Corresponding GP1 bit is inverted
0
= Corresponding GP1 bit is not inverted
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
- n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown



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