MCP23S18 Microchip Technology, MCP23S18 Datasheet - Page 5

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

www.DataSheet4U.com
1.1
TABLE 1-1:
© 2008 Microchip Technology Inc.
GPB0
GPB1
GPB2
GPB3
GPB4
GPB5
GPB6
GPB7
V
V
SCL
SDA
ADDR
RESET
INTB
INTA
GPA0
GPA1
GPA2
GPA3
GPA4
GPA5
GPA6
GPA7
NC
EP
Name
DD
SS
Pin
Pin Descriptions
17, 28
PDIP/
2, 14,
SOIC
28L
10
12
13
15
16
19
20
21
22
23
24
25
26
27
11
18
—
3
4
5
6
7
8
9
1
I
2
C PINOUT DESCRIPTION (MCP23018)
QFN
24L
24
23
10
12
13
14
15
16
17
18
19
20
21
22
25
11
—
1
2
3
4
5
6
7
8
9
SSOP
24L
10
12
13
14
15
16
17
18
19
20
21
22
23
24
11
—
—
2
3
4
5
6
7
8
9
1
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
I/O
O
P
P
O
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
Ground
Serial clock input
Hardware address pin allows up to 8 slave devices on the bus
Hardware reset
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
Serial data I/O
MCP23018/MCP23S18
Standard Function
DS22103A-page 5
SS
.