MCP23009T 查看數據表（PDF） - Microchip Technology
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MCP23009T Datasheet PDF : 52 Pages
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MCP23009/MCP23S09
TABLE 1-2: SPI PINOUT DESCRIPTION (MCP23S09)
Pin
Name
Pin Number
Pin
16-lead 18-lead Type
QFN PDIP/SOIC
Standard Function
VDD
3
NC
—
1
2, 17
P Power (high-current capable)
— Not connected
CS
4
SCK
2
SI
5
SO
6
3
I Chip select
4
I Serial clock input
5
I Serial data input
6
O Serial data out
RESET 7
INT
8
GP0
9
GP1
10
GP2
11
GP3
12
GP4
13
GP5
14
GP6
15
GP7
16
VSS
1
EP
17
7
I Hardware reset (must be externally biased)
8
O Interrupt output for port. Can be configured as active-high, active-low or
open-drain.
9
I/O Bidirectional I/O pin (5.5V tolerant inputs; open-drain outputs). Can be
enabled for Interrupt-on-Change and/or internal pull-up resistor.
10
I/O Bidirectional I/O pin (5.5V tolerant inputs; open-drain outputs). Can be
enabled for Interrupt-on-Change and/or internal pull-up resistor.
11
I/O Bidirectional I/O pin (5.5V tolerant inputs; open-drain outputs). Can be
enabled for Interrupt-on-Change and/or internal pull-up resistor.
12
I/O Bidirectional I/O pin (5.5V tolerant inputs; open-drain outputs). Can be
enabled for Interrupt-on-Change and/or internal pull-up resistor.
13
I/O Bidirectional I/O pin (5.5V tolerant inputs; open-drain outputs). Can be
enabled for Interrupt-on-Change and/or internal pull-up resistor.
14
I/O Bidirectional I/O pin (5.5V tolerant inputs; open-drain outputs). Can be
enabled for Interrupt-on-Change and/or internal pull-up resistor.
15
I/O Bidirectional I/O pin (5.5V tolerant inputs; open-drain outputs). Can be
enabled for Interrupt-on-Change and/or internal pull-up resistor.
16
I/O Bidirectional I/O pin (5.5V tolerant inputs; open-drain outputs). Can be
enabled for Interrupt-on-Change and/or internal pull-up resistor.
18
P Ground (high-current capable)
—
— Exposed Thermal Pad (EP). Can be left floating or connected to VSS.
2009-2014 Microchip Technology Inc.
DS20002121C-page 5
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