MCP23009-E/MG Microchip Technology, MCP23009-E/MG Datasheet - Page 22

• Manufacturer Part Number: MCP23009-E/MG
• Description: IC I/O EXPANDER I2C 8B 16QFN
• Manufacturer: Microchip Technology
• Type: I/O Expanderr

Specifications of MCP23009-E/MG

• Package / Case: 16-QFN
• Interface: I²C
• Number Of I /o: 8
• Interrupt Output: Yes
• Frequency - Clock: 3.4MHz
• Voltage - Supply: 1.8 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Operating Supply Voltage: 1.8 V to 5.5 V
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Chip Configuration: 8bit
• Bus Frequency: 3.4MHz
• Interface Type: I2C, Serial, SPI
• No. Of I/o's: 9
• Supply Voltage Range: 1.8V To 5.5V
• Digital Ic Case Style: QFN
• No. Of Pins: 16
• Svhc: No SVHC (15-Dec-2010)
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

MCP23009/MCP23S09
1.6.7
The GPPU register controls the pull-up resistors for the
port pins. If a bit is set the corresponding port pin is
internally pulled up with an internal resistor.
REGISTER 1-7:
FIGURE 1-10:
DS22121B-page 22
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 7-0
R/W-0
PU7
400
350
300
250
200
150
100
PULL-UP RESISTOR
CONFIGURATION REGISTER
50
0
PU7:PU0: Controls the internal pull-up resistors on each pin (when configured as an input or output)
<7:0>.
1 = Pull-up enabled
0 = Pull-up disabled
1.5
R/W-0
GPIO Pin Internal Pull-up Current vs V
PU6
GPPU – GPIO PULL-UP RESISTOR REGISTER
TYPICAL PERFORMANCE CURVE FOR THE INTERNAL PULL-UP RESISTORS
2
W = Writable bit
‘1’ = Bit is set
R/W-0
PU5
2.5
R/W-0
PU4
3
V
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
DD
3.5
R/W-0
PU3
(V)
T = +25°C
4
R/W-0
PU2
T = +85°C
4.5
© 2009 Microchip Technology Inc.
T = -40°C
x = Bit is unknown
DD
R/W-0
PU1
T = +125°C
5
R/W-0
5.5
PU0
bit 0