MCP23S18 Microchip Technology, MCP23S18 Datasheet - Page 6

• Manufacturer Part Number: MCP23S18
• Description: 16-Bit I/O Expander
• Manufacturer: Microchip Technology

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MCP23018/MCP23S18
TABLE 1-2:
DS22103A-page 6
GPB0
GPB1
GPB2
GPB3
GPB4
GPB5
GPB6
GPB7
V
V
CS
SCK
SI
SO
RESET
INTB
INTA
GPA0
GPA1
GPA2
GPA3
GPA4
GPA5
GPA6
GPA7
NC
EP
Name
DD
SS
Pin
PDIP/
SOIC
2, 17,
28L
10
12
13
14
15
16
18
19
20
21
22
23
24
25
26
27
28
11
—
3
4
5
6
7
8
9
1
SPI PINOUT DESCRIPTION (MCP23S18)
QFN
24L
24
23
10
11
12
13
14
15
16
17
18
19
20
21
22
25
—
—
1
2
3
4
5
6
7
8
9
Type
Pin
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
—
P
P
O
O
O
I
I
I
I
Bidirectional I/O Pin (5.5 volt tolerant inputs; open-drain outputs). Can be enabled
for interrupt on change, and/or internal pull-up resistor.
Bidirectional I/O Pin (5.5 volt tolerant inputs; open-drain outputs). Can be enabled
for interrupt on change, and/or internal pull-up resistor.
Bidirectional I/O Pin (5.5 volt tolerant inputs; open-drain outputs). Can be enabled
for interrupt on change, and/or internal pull-up resistor.
Bidirectional I/O Pin (5.5 volt tolerant inputs; open-drain outputs). Can be enabled
for interrupt on change, and/or internal pull-up resistor.
Bidirectional I/O Pin (5.5 volt tolerant inputs; open-drain outputs). Can be enabled
for interrupt on change, and/or internal pull-up resistor.
Bidirectional I/O Pin (5.5 volt tolerant inputs; open-drain outputs). Can be enabled
for interrupt on change, and/or internal pull-up resistor.
Bidirectional I/O Pin (5.5 volt tolerant inputs; open-drain outputs). Can be enabled
for interrupt on change, and/or internal pull-up resistor.
Bidirectional I/O Pin (5.5 volt tolerant inputs; open-drain outputs). Can be enabled
for interrupt on change, and/or internal pull-up resistor.
Power (high current capable)
Ground (high current capable)
Chip select
Serial clock input
Serial data input
Serial data out
Hardware reset (must be externally biased)
Interrupt output for port B. Can be configured as active high, active low, or open
drain.
Interrupt output for port A. Can be configured as active high, active low, or open
drain.
Bidirectional I/O Pin (5.5 volt tolerant inputs; open-drain outputs). Can be enabled
for interrupt on change, and/or internal pull-up resistor.
Bidirectional I/O Pin (5.5 volt tolerant inputs; open-drain outputs). Can be enabled
for interrupt on change, and/or internal pull-up resistor.
Bidirectional I/O Pin (5.5 volt tolerant inputs; open-drain outputs). Can be enabled
for interrupt on change, and/or internal pull-up resistor.
Bidirectional I/O Pin (5.5 volt tolerant inputs; open-drain outputs). Can be enabled
for interrupt on change, and/or internal pull-up resistor.
Bidirectional I/O Pin (5.5 volt tolerant inputs; open-drain outputs). Can be enabled
for interrupt on change, and/or internal pull-up resistor.
Bidirectional I/O Pin (5.5 volt tolerant inputs; open-drain outputs). Can be enabled
for interrupt on change, and/or internal pull-up resistor.
Bidirectional I/O Pin (5.5 volt tolerant inputs; open-drain outputs). Can be enabled
for interrupt on change, and/or internal pull-up resistor.
Bidirectional I/O Pin (5.5 volt tolerant inputs; open-drain outputs). Can be enabled
for interrupt on change, and/or internal pull-up resistor.
Not connected
Exposed Thermal Pad (EP). Do not electrically connect, or connect to V
Standard Function
© 2008 Microchip Technology Inc.
SS
.