MCP23S08/S Microchip Technology, MCP23S08/S Datasheet - Page 11
MCP23S08/S
Manufacturer Part Number
MCP23S08/S
Description
8-bit Input/Output Expander, SPI interface, 0C to +70C, Die-Waffle, WPAC
Manufacturer
Microchip Technology
Datasheet
1.MCP23S08S.pdf
(44 pages)
- Current page: 11 of 44
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1.6.2
The IPOL register allows the user to configure the
polarity on the corresponding GPIO port bits.
If a bit is set, the corresponding GPIO register bit will
reflect the inverted value on the pin.
REGISTER 1-2:
© 2007 Microchip Technology Inc.
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 7-0
R/W-0
IP7
INPUT POLARITY (IPOL) REGISTER
IP7:IP0: These bits control the polarity inversion of the input pins <7:0>
1 = GPIO register bit will reflect the opposite logic state of the input pin.
0 = GPIO register bit will reflect the same logic state of the input pin.
R/W-0
IP6
IPOL – INPUT POLARITY PORT REGISTER (ADDR 0x01)
W = Writable bit
‘1’ = Bit is set
R/W-0
IP5
R/W-0
IP4
‘0’ = Bit is cleared
U = Unimplemented bit, read as ‘0’
MCP23008/MCP23S08
R/W-0
IP3
R/W-0
IP2
x = Bit is unknown
R/W-0
IP1
DS21919E-page 11
R/W-0
IP0
bit 0
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