ARM Cortex-A12

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ARM Cortex-A12
General information
Designed byARM Holdings
Cache
L1 cache32-64 KiB I, 32 KiB D
L2 cache256 KiB–8 MiB (configurable with L2 cache controller)
Architecture and classification
MicroarchitectureARMv7-A
Physical specifications
Cores
  • 1–4
Products, models, variants
Product code name(s)
History
PredecessorARM Cortex-A9
SuccessorARM Cortex-A17

The ARM Cortex-A12 is a 32-bit processor core licensed by ARM Holdings implementing the ARMv7-A architecture. It provides up to 4 cache-coherent cores. The Cortex-A12 is a successor to the Cortex-A9.[2]

ARM renamed A12 as a variant of Cortex-A17 since the second revision of the core in early 2014, because they were indistinguishable in performance.[3][4]

Overview[]

Main article: Comparison of ARMv7-A cores

ARM claims that the Cortex-A12 core is 40 percent more powerful than the Cortex-A9 core.[5] New features not found in the Cortex-A9 include hardware virtualization and 40-bit Large Physical Address Extensions (LPAE) addressing. It was announced as supporting big.LITTLE,[6] however shortly afterwards the ARM Cortex-A17 was announced as the upgraded version with that capability.[7]

Key features of the Cortex-A12 core are:[8]

  • Out-of-order speculative issue superscalar execution pipeline giving 3.00 DMIPS/MHz/core.
  • NEON SIMD instruction set extension.
  • High performance VFPv4 floating point unit.
  • Thumb-2 instruction set encoding reduces the size of programs with little impact on performance.
  • TrustZone security extensions.
  • L2 cache controller (0-8 MB).
  • Multi-core processing.
  • 40-bit Large Physical Address Extensions (LPAE) addressing up to 1 TB of RAM.
  • Hardware virtualization support.

See also[]

References[]

  1. ^ "What core follows ARM's A12?". 15 January 2014.
  2. ^ "ARM Cortex-A12 Processor". Arm.com.
  3. ^ Anand Lal Shimpi (11 February 2014). "ARM Cortex A17: An Evolved Cortex A12 for the Mainstream in 2015". AnandTech. Retrieved 30 September 2014.
  4. ^ Stefan Rosinger (1 October 2014). "ARM Cortex-A17 / Cortex-A12 processor update". ARM Connected Community.
  5. ^ ARM launches new Cortex-A12 processor with new Mali-T622 GPU and Mali-V500 video processing
  6. ^ ARM Targets 580 Million Mid-Range Mobile Devices with New Suite of IP
  7. ^ Anand Lal Shimpi (11 February 2014). "ARM Cortex A17: An Evolved Cortex A12 for the Mainstream in 2015". Anandtech.
  8. ^ "Cortex-A12 Processor Specifications". ARM.

External links[]

ARM Holdings

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