Actually, this is untrue, and I know of no NFC ASIC with an integrated secure element (not NXP, nor Sony); the ASICs are typically just transceivers (the exception being an NXP ASIC with embedded MiFare). The SIM has been identified for a long time as the probable security element for NFC. However, this has long been a point of contention, and Gemalto (the largest SIM provider in the world) has been playing both sides quite evenly.
"Featuring a NFC radio controller and an embedded Secure Element, the PN65N is also fully validated and integrated on the latest release of Android™ 4.0."
Admittedly, my knowledge is a little bit out of date, but that is one chip out of several that I know over the last 7 years. You used the word "typically," and as you can imagine, the telcos have a preference for treating the SIM as the secure element because they control it; in the US the telcos dirve the majority of mobile sales.
This is a slightly sore subject as I worked for a startup that is now a zombie, having attempted to wait out the fight over who would control NFC payments (telco vs. credit card company).
