MCP23008_07 Datasheet, PDF (1/44 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
• 20-pin QFN
Block Diagram
MCP23S08
SCK
SI
SO
MCP23008
MCP23S08
SCL
SDA
A1:A0
A2:A0
3
Serial
Interface
Decode
RESET
INT
Interrupt
Logic
VDD
VSS
POR
Serializer/
Deserializer ⁸
Control
8
Configuration/
Control
Registers
GPIO
GP0
GP1
GP2
GP3
GP4
GP5
GP6
GP7
© 2007 Microchip Technology Inc.
DS21919D-page 1