MCP23S09T-E/SO Microchip Technology, MCP23S09T-E/SO Datasheet - Page 25

• Manufacturer Part Number: MCP23S09T-E/SO
• Description: 8-bit Input/Output Expander, SPI Interface 18 SOIC .300in T/R
• Manufacturer: Microchip Technology

Specifications of MCP23S09T-E/SO

• Interface: SPI
• Number Of I /o: 8
• Interrupt Output: Yes
• Frequency - Clock: 10MHz
• Voltage - Supply: 1.8 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 18-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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:
© 2009 Microchip Technology Inc.
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 7-0
R/W-0
GP7
PORT REGISTER
GP7:GP0: Reflects 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
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’
MCP23009/MCP23S09
R/W-0
GP3
R/W-0
GP2
x = Bit is unknown
R/W-0
GP1
DS22121B-page 25
R/W-0
GP0
bit 0