The 1.8V Fault-Tolerant General Purpose I/O library provides a 3.3V tolerant programmable, bidirectional I/O that give the system designer the flexibility to design to a wide range of performance ...

A key attribute of this library is its ability to detect and dynamically adjust to a VDDIO supply of 1.8V or 3.3V during system operation. The GPIO cell set can be configured as input, output, ...

Wouldn’t it be nice if there was a simple plug-and-play way to add a few bits of GPIO to your desktop or laptop ... Eleven of the Nano’s IO pins plus 3.3V and ground are broken out to header ...