MCP23008 Datasheet, PDF (1/40 Pages) Microchip Technology – 8-Bit I/O Expander with Serial Interface

MCP23008/MCP23S08
8-Bit I/O Expander with Serial Interface
Features
• 8-bit remote bidirectional I/O port
- I/O pins default to input
• High-speed I²C™ interface (MCP23008)
- 100 kHz
- 400 kHz
- 1.7 MHz
• High-speed SPI™ interface (MCP23S08)
- 10 MHz
• Hardware address pins
- Three for the MCP23008 to allow up to eight
devices on the bus
- Two for the MCP23S08 to allow up to four
devices using the same chip-select
• Configurable interrupt output pin
- Configurable as active-high, active-low or
open-drain
• Configurable interrupt source
- Interrupt-on-change from configured defaults
or pin change
• Polarity Inversion register to configure the polarity
of the input port data
• External reset input
• Low standby current: 1 µA (max.)
• Operating voltage:
- 1.8V to 5.5V @ -40°C to +85°C (I-Temp)
- 2.7V to 5.5V @ -40°C to +85°C (I-Temp)
- 4.5V to 5.5V @ -40°C to +125°C (E-Temp)
Packages
18-pin PDIP (300 mil)
18-pin SOIC (300 mil)
20-pin SSOP
Package Types
MCP23008
PDIP/SOIC
SCL
1
18
SDA
2
17
A2
3
16
A1
4
15
A0
5
14
RESET
6
13
NC
7
12
INT
8
11
VSS
9
10
SCL
SDA
A2
A1
A0
RESET
NC
INT
VSS
N/C
SSOP
1
20
2
19
3
18
4
17
5
16
6
15
7
14
8
13
9
12
10
11
VDD
GP7
GP6
GP5
GP4
GP3
GP2
GP1
GP0
VDD
GP7
GP6
GP5
GP4
GP3
GP2
GP1
GP0
N/C
MCP23S08
SCK
SI
SO
A1
A0
RESET
CS
INT
VSS
SCK
SI
SO
A1
A0
RESET
CS
INT
VSS
N/C
PDIP/SOIC
1
18
2
17
3
16
4
15
5
14
6
13
7
12
8
11
9
10
SSOP
1
20
2
19
3
18
4
17
5
16
6
15
7
14
8
13
9
12
10
11
VDD
GP7
GP6
GP5
GP4
GP3
GP2
GP1
GP0
VDD
GP7
GP6
GP5
GP4
GP3
GP2
GP1
GP0
N/C
© 2005 Microchip Technology Inc.
DS21919B-page 1