Silego Technology

GreenPak devices are made on a TSMC eNVM process http://www.silego.com/uploads/resources/NVM_Reliability_Report_2014.pdf

“The NVM is one time programmable (OTP) memory using the OTP Fuse from TSMC's 0.18 μm 1.8 V / 5 V Logic process. Programming is done via hot electron injection generated by avalanche impact ionization in the bit cell. ” (http://www.silego.com/custsupport/faq.html)