Accessible pinout for MCP23017-E_SP

Part description: IC I/O EXPANDER I2C 16B 28SDIP

Package description: This package has two parallel rows of pins extending down from opposite edges of the chip.

There should be a semicircular notch that you can feel in the middle of one of the package's shorter bare edges. With the pins facing downward and the chip oriented so notch is on the side of the chip furthest from you, Pin 1 will be in the far left corner of the chip.

Pins are numbered counter-clockwise. Numbers increase from the far left corner to the near left corner. They then continue on the right side, increasing from the near right corner to the far right corner. Thus the highest number pin is to the right of pin 1.

Pin assignments

Left side (numbering starts at far end)

Pin Signals
1GPB0
2GPB1
3GPB2
4GPB3
5GPB4
6GPB5
7GPB6
8GPB7
9VDD
10VSS
11NC
12SCK
13SDA
14NC

Right side (numbering starts at near end)

Pin Signals
15A0
16A1
17A2
18RESET (active low)
19INTB
20INTA
21GPA0
22GPA1
23GPA2
24GPA3
25GPA4
26GPA5
27GPA6
28GPA7

This pinout was automatically generated from the DigiKey KiCAD library revision e0fe76.

It is possible that there may be a mistake in the source data leading to wrong information on this page.