MCP23S08-E/ML Microchip Technology, MCP23S08-E/ML Datasheet - Page 16

• Manufacturer Part Number: MCP23S08-E/ML
• Description: IC, I/O EXPANDER, 8BIT, 10MHZ, QFN-20
• Manufacturer: Microchip Technology

Specifications of MCP23S08-E/ML

• Chip Configuration: 8 Bit
• Bus Frequency: 10MHz
• Ic Interface Type: SPI
• No. Of I/o's: 8
• Supply Voltage Range: 1.8V To 5.5V
• Digital Ic Case Style: QFN
• No. Of Pins: 20
• 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: 20-VQFN Exposed Pad, 20-HVQFN, 20-SQFN, 20-DHVQFN
• Includes: POR
• Interface Type: SPI
• Rohs Compliant: Yes
• 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, Lead free / RoHS Compliant

MCP23008/MCP23S08
1.6.7
The GPPU register controls the pull-up resistors for the
port pins. If a bit is set and the corresponding pin is
configured as an input, the corresponding port pin is
internally pulled up with a 100 kΩ resistor.
REGISTER 1-7:
DS21919E-page 16
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 7-0
R/W-0
PU7
PULL-UP RESISTOR
CONFIGURATION (GPPU)
REGISTER
PU7:PU0: These bits control the weak pull-up resistors on each pin (when configured as an input)
<7:0>.
1 = Pull-up enabled.
0 = Pull-up disabled.
R/W-0
PU6
GPPU – GPIO PULL-UP RESISTOR REGISTER (ADDR 0x06)
W = Writable bit
‘1’ = Bit is set
R/W-0
PU5
R/W-0
PU4
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
R/W-0
PU3
R/W-0
PU2
© 2007 Microchip Technology Inc.
x = Bit is unknown
R/W-0
PU1
R/W-0
PU0
bit 0