Key facts
- Brand
- MICROCHIP
- Model
- MCP23008
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-06-05
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Microchip MCP23008/MCP23S08 8-Bit I/O Expander Datasheet
This document describes the MCP23X08 family of 8-bit general-purpose parallel I/O expanders designed for I²C or SPI applications. The devices feature configurable interrupt outputs, polarity inversion registers, and external reset inputs to facilitate system integration.
The datasheet provides detailed information on device operation, including power-on reset behavior, sequential versus byte mode operations, and specific protocols for both I²C write/read and SPI write/read sequences.
MICROCHIP MCP23008 specifications
| Interface Type (MCP23008) | High-speed I²C interface |
|---|---|
| Interface Type (MCP23S08) | High-speed SPI interface |
| I/O Port Size | 8-bit remote bidirectional I/O port |
| Operating Voltage (Industrial) | 1.8V to 5.5V |
| Operating Voltage (Extended) | 4.5V to 5.5V |
| Standby Current | 1 uA max. |
Source: Microchip MCP23008/MCP23S08 8-Bit I/O Expander Datasheet
All MICROCHIP MCP23008 documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What are the available packages for this device?
The device is available in 18-pin PDIP, 18-pin SOIC, and 20-pin SSOP packages.
From: Microchip MCP23008/MCP23S08 8-Bit I/O Expander Datasheet
How many hardware address pins does the MCP23S08 have?
The MCP23S08 has two hardware address pins to allow up to four devices using the same chip-select.
From: Microchip MCP23008/MCP23S08 8-Bit I/O Expander Datasheet