MCP23S08/S Microchip Technology, MCP23S08/S Datasheet - Page 19
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: 19 of 44
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1.6.10
The GPIO register reflects the value on the port.
Reading from this register reads the port. Writing to this
register modifies the Output Latch (OLAT) register.
REGISTER 1-10:
© 2007 Microchip Technology Inc.
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 7-0
R/W-0
GP7
PORT (GPIO) REGISTER
GP7:GP0: These bits reflect the logic level on the pins <7:0>
1 = Logic-high.
0 = Logic-low.
R/W-0
GP6
GPIO – GENERAL PURPOSE I/O PORT REGISTER (ADDR 0x09)
W = Writable bit
‘1’ = Bit is set
R/W-0
GP5
R/W-0
GP4
‘0’ = Bit is cleared
U = Unimplemented bit, read as ‘0’
MCP23008/MCP23S08
R/W-0
GP3
R/W-0
GP2
x = Bit is unknown
R/W-0
GP1
DS21919E-page 19
R/W-0
GP0
bit 0
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