It's widely believed that Taiwan Semiconductor Manufacturing Company (NYSE:TSM) will manufacture most, if not all, of the A11 Fusion chips that'll power all three of this year's Apple (NASDAQ:AAPL) iPhone models.

Apple's A11 Fusion chips are expected to be built using TSMC's new 10-nanometer manufacturing tech.

Apple's A10 chip embedded inside of an iPhone.

Image source: Apple.

TSMC has made it clear that it intends to transition quickly from its 10-nanometer technology to its 7-nanometer technology, which should yield both area and performance advantages over this year's 10-nanometer technology.

On TSMC's most recent earnings call, the company offered up an update on its 7-nanometer technology. This should be of interest to those who follow TSMC as well as those who follow Apple, as Apple's A12 Fusion is highly likely to be built primarily (if not exclusively) by TSMC using that 7-nanometer technology.

Technology is qualified, on track for mass production in 2018

TSMC said on its call that its 7-nanometer technology, referred to by the company as its N7 technology, "has passed technology qualification in April, right on schedule." The company expects to "have a very smooth N7 ramp-up in 2017, with its yield learning even better than [TSMC's] 16-nanometer."

If TSMC can deliver on this promise, that should be good for Apple as well as the many other customers that appear to have signed up to use this technology. As a signal of the kind of demand that TSMC could enjoy, the company said that it expects to "have 13 new N7 product tape-outs this year." TSMC co-CEO Mark Liu also said at one point during the Q&A session of the earnings call that the company has "more than 30 customers" using the N7 technology today.

I'd expect that the A12 Fusion, as well as potentially the A11X Fusion (the iPad Pro-bound variant of the A11 Fusion that'll power this year's iPhone models) to be among those 13 products that will be "taped out" this year in preparation for volume production next year.

Enhanced version coming next year

TSMC also said that it is also developing a performance-enhanced version of its N7 technology, referred to as N7+. The technology is expected to deliver both performance improvements over N7 as well as deliver some modest area reduction.

"Our N7+ technology will be again the most advanced technology in the foundry industry in 2018 in terms of density, performance and power," Liu claimed.

It's probably a safe bet to assume that Apple's A13 Fusion chip -- which should power the 2019 iPhone models -- will be built using this N7+ technology. 

Long live 7-nanometer!

While TSMC's 10-nanometer technology is expected to have a relatively short life (similar to the company's 20-nanometer technology introduced in 2014), the company's 7-nanometer technology (both N7 and N7+) are expected to last a while.

"We expect our 7-nanometer node, N7 and N7+, to be a major and long-life technology node," Liu said. "It will be used in mobile, high-performance computing and automotive markets."

Liu also made clear that N7 and N7+ wouldn't just be limited to the highest-end products, noting that these technologies will "cover premium, mainstream as well as low-cost products in all those markets."

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