MCP23008 Datasheet (Microchip Technology)

MCP23008, 8-Bit I/O Expander

TABLE 1-1: PINOUT DESCRIPTION Pin Name PDIP/ SOIC QFN SSOP Pin Type Function SCL/SCK 1 SDA/SI 2 A2/SO 3 A1 4 A0 5 RESET 6 NC/CS 7 INT 8 VSS 9 GP0 10 GP1 11 GP2 12 GP3 13 GP4 14 GP5 15 GP6 16 GP7 17 VDD 18 N/C * 19 1 I Serial clock input.

20 2

MCP23008 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 bu