MCP23008T-E/SS Microchip Technology, MCP23008T-E/SS Datasheet - Page 10

• Manufacturer Part Number: MCP23008T-E/SS
• Description: IC,I/O PORT,8-BIT,SSOP,20PIN,PLASTIC
• Manufacturer: Microchip Technology

Specifications of MCP23008T-E/SS

• Rohs Compliant: YES
• Interface: I²C
• Number Of I /o: 8
• Interrupt Output: Yes
• Frequency - Clock: 1.7MHz
• Voltage - Supply: 1.8 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 20-SSOP
• Includes: POR
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: GPIODM-KPLCD - BOARD DEMO LCD GPIO EXP KEYPAD
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: Q2170569

MCP23008/MCP23S08
1.6.1
Controls the direction of the data I/O.
When a bit is set, the corresponding pin becomes an
input. When a bit is clear, the corresponding pin
becomes an output.
REGISTER 1-1:
DS21919E-page 10
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 7-0
R/W-1
IO7
I/O DIRECTION (IODIR) REGISTER
IO7:IO0: These bits control the direction of data I/O <7:0>
1 = Pin is configured as an input.
0 = Pin is configured as an output.
R/W-1
IO6
IODIR – I/O DIRECTION REGISTER (ADDR 0x00)
W = Writable bit
‘1’ = Bit is set
R/W-1
IO5
R/W-1
IO4
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
R/W-1
IO3
R/W-1
IO2
© 2007 Microchip Technology Inc.
x = Bit is unknown
R/W-1
IO1
R/W-1
IO0
bit 0