ARM NEON™ Technology is the implementation of the Advanced SIMD architecture extension. It is a 64/128 bit hybrid SIMD technology targeted at advanced media and signal processing applications and embedded processors. It is implemented as part of the ARM core, but has its own execution pipelines and a register bank that is distinct from the ARM core register bank.

NEON instructions are available in both ARM and Thumb-2 code. See Chapter 5 NEON and VFP Programming for details of NEON.