Datasheet Details
| Part number | MCP23009 |
|---|---|
| Manufacturer | Microchip Technology |
| File Size | 803.56 KB |
| Description | 8-Bit I/O Expander |
| Datasheet |
 MCP23009 Datasheet
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General Description
TABLE 1-1: I2C™ PINOUT DESCRIPTION (MCP23009)
Pin Name
Pin Number
16-lead 18-lead 20-lead QFN PDIP/SOIC SSOP
Pin Type
Standard Function
VDD
3
1
1 P Power
NC 2 2, 16-17 2, 10-11,
Not connected 18-19
SCL 4
3
3 I Serial clock input
SDA
5
4
4 I/O Serial data I/O
ADDR
6
5
Key Features
- 8-Bit Remote Bidirectional I/O Port: - I/O Pins Default to Input.
- Open-Drain Outputs: - 5.5V Tolerant - 25 mA Sink Capable (per Pin) - 200 mA Total.
- High-Speed I2C™ Interface (MCP23009): - 100 kHz - 400 kHz - 3.4 MHz.
- High-Speed SPI Interface (MCP23S09): - 10 MHz.
- Single Hardware Address Pin (MCP23009): - Voltage input to allow up to eight devices on the bus.
- Configurable Interrupt Output Pins: - Configurable as active-high, active-low or o.