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 targets. This library is offered as a supplement to the I/O libraries provided by Aragio Solutions. Use of this library also requires the Support: Power library to enable the construction of a complete pad ring. Ported from our TSMC 16 silicon proven design.