There have been several generations of the ARM design. Currently, the widely used Cortex cores, older 'classic' cores, and specialised SecurCore cores variants are available for each of these to include or exclude optional capabilities. With over 230 billion ARM chips produced, as of 2022, ARM is the most widely used family of instruction set architectures (ISA) and the ISAs produced in the largest quantity.

However, ARM processors are also used for desktops and servers, including the world's fastest supercomputer ( Fugaku) from 2020 to 2022. It also designs cores that implement these instruction set architectures and licenses these designs to many companies that incorporate those core designs into their own products.ĭue to their low costs, minimal power consumption, and lower heat generation than their competitors, ARM processors are desirable for light, portable, battery-powered devices, including smartphones, laptops and tablet computers, and other embedded systems. develops the architectures and licenses them to other companies, who design their own products that implement one or more of those architectures, including system on a chip (SoC) and system on module (SOM) designs, that incorporate different components such as memory, interfaces, and radios. Up to 32 × 64-bit registers, SIMD/floating-point (optional)ģ2-bit, except Thumb extension uses mixed 16- and 32-bit instructions.īi (little as default) in ARMv3 and aboveġ5 × 32-bit integer registers, including R14 (link register), but not R15 (PC, 26-bit addressing in older)ĪRM (stylised in lowercase as arm, formerly an acronym for Advanced RISC Machines and originally Acorn RISC Machine) is a family of RISC instruction set architectures for computer processors, configured for various environments. Thumb-2, Neon, Jazelle, AES, SHA, DSP, Saturated, FPv4-SP, FPv5, Heliumġ5 × 32-bit integer registers, including R14 (link register), but not R15 (PC) SVE, SVE2, SME, AES, SHA, TME All mandatory: Thumb-2, Neon, VFPv4-D16, VFPv4 obsolete: Jazelleģ2 × 128-bit registers for scalar 32- and 64-bit FP or SIMD FP or integer or cryptographyĪRMv9-R, ARMv9-M, ARMv8-R, ARMv8-M, ARMv7-A, ARMv7-R, ARMv7E-M, ARMv7-M, ARMv6-Mģ2-bit, except Thumb-2 extensions use mixed 16- and 32-bit instructions.

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