MCP23S08-E/SO Microchip Technology Inc., MCP23S08-E/SO Datasheet - Page 19

• Manufacturer Part Number: MCP23S08-E/SO
• Description: 8-BIT INPUT/OUTPUT EXPANDER, SPI INTERFACE
• Manufacturer: Microchip Technology Inc.
• Type: Programmable Peripheral Interfacer

Specifications of MCP23S08-E/SO

• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

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
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
MCP23008/MCP23S08
R/W-0
GP3
R/W-0
GP2
x = Bit is unknown
R/W-0
GP1
DS21919D-page 19
R/W-0
GP0
bit 0