VeriSilicon SMIC 0.18um 1.8V/3.3V DUP I/O Library developed by VeriSilicon is optimized for Semiconductor Manufacturing International Corporation (SMIC) 0.18um Logic 1P5M Salicide 1.8/3.3V process. This library supports Device Under Pad (DUP). It can take 5V tolerance and work with configurable and variable driving strength between 2mA - 24mA.