The ARM Cortex-A12 is a 32-bit processor core licensed by
ARM Holdings
Arm is a British semiconductor and software design company based in Cambridge, England.
Its primary business is in the design of ARM processors (CPUs). It also designs other chips, provides software development tools under the DS-5, Real ...
implementing the
ARMv7-A architecture. It provides up to 4
cache-coherent cores. The Cortex-A12 is a successor to the
Cortex-A9
The ARM Cortex-A9 MPCore is a 32-bit multi-core processor that provides up to 4 cache-coherent cores, each implementing the ARM v7 architecture instruction set. It was introduced in 2007.
Features
Key features of the Cortex-A9 core are:
* ...
.
ARM renamed A12 as a variant of
Cortex-A17
The ARM Cortex-A17 is a 32-bit processor core implementing the ARMv7-A architecture, licensed by ARM Holdings. Providing up to four cache-coherent cores, it serves as the successor to the Cortex-A9 and replaces the previous ARM Cortex-A12 sp ...
since the second revision of the core in early 2014, because they were indistinguishable in performance.
Overview
ARM claims that the Cortex-A12 core is 40 percent more powerful than the
Cortex-A9
The ARM Cortex-A9 MPCore is a 32-bit multi-core processor that provides up to 4 cache-coherent cores, each implementing the ARM v7 architecture instruction set. It was introduced in 2007.
Features
Key features of the Cortex-A9 core are:
* ...
core. 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, however shortly afterwards the
ARM Cortex-A17
The ARM Cortex-A17 is a 32-bit processor core implementing the ARMv7-A architecture, licensed by ARM Holdings. Providing up to four cache-coherent cores, it serves as the successor to the Cortex-A9 and replaces the previous ARM Cortex-A12 sp ...
was announced as the upgraded version with that capability.
Key features of the Cortex-A12 core are:
*
Out-of-order speculative issue superscalar
A superscalar processor is a CPU that implements a form of parallelism called instruction-level parallelism within a single processor. In contrast to a scalar processor, which can execute at most one single instruction per clock cycle, a sup ...
execution
pipeline
Pipeline may refer to:
Electronics, computers and computing
* Pipeline (computing), a chain of data-processing stages or a CPU optimization found on
** Instruction pipelining, a technique for implementing instruction-level parallelism within a s ...
giving 3.00
DMIPS/MHz/core.
*
NEON
Neon is a chemical element with the symbol Ne and atomic number 10. It is a noble gas. Neon is a colorless, odorless, inert monatomic gas under standard conditions, with about two-thirds the density of air. It was discovered (along with krypt ...
SIMD
Single instruction, multiple data (SIMD) is a type of parallel processing in Flynn's taxonomy. SIMD can be internal (part of the hardware design) and it can be directly accessible through an instruction set architecture (ISA), but it should ...
instruction set extension.
* High performance VFPv4 floating point unit.
*
Thumb-2
ARM (stylised in lowercase as arm, formerly an acronym for Advanced RISC Machines and originally Acorn RISC Machine) is a family of reduced instruction set computer (RISC) instruction set architectures for computer processors, configured ...
instruction set encoding reduces the size of programs with little impact on performance.
*
TrustZone
ARM (stylised in lowercase as arm, formerly an acronym for Advanced RISC Machines and originally Acorn RISC Machine) is a family of reduced instruction set computer (RISC) instruction set architectures for computer processors, configured ...
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
Hardware virtualization is the virtualization of computers as complete hardware platforms, certain logical abstractions of their componentry, or only the functionality required to run various operating systems. Virtualization hides the physic ...
support.
See also
*
ARM architecture
ARM (stylised in lowercase as arm, formerly an acronym for Advanced RISC Machines and originally Acorn RISC Machine) is a family of reduced instruction set computer (RISC) instruction set architectures for computer processors, configure ...
*
Comparison of ARMv8-A cores
This is a comparison of processors based on the ARM family of instruction sets designed by ARM Holdings and 3rd parties, sorted by version of the ARM instruction set, release and name.
ARMv6
ARMv7-A
This is a table comparing central proc ...
*
JTAG
JTAG (named after the Joint Test Action Group which codified it) is an industry standard for verifying designs and testing printed circuit boards after manufacture.
JTAG implements standards for on-chip instrumentation in electronic design autom ...
*
List of applications of ARM cores
This is a list of products using processors (i.e. central processing units) based on the ARM architecture family, sorted by generation release and name.
__TOC__
List of products
}
, Broadcom BCM2837: '' Raspberry Pi 3'',
HiSilicon Kirin Serie ...
*
List of ARM cores
This is a list of central processing units based on the ARM family of instruction sets designed by ARM Ltd. and third parties, sorted by version of the ARM instruction set, release and name. In 2005, ARM provided a summary of the numerous vendo ...
References
External links
;ARM Holdings
*
{{Use dmy dates, date=June 2013
ARM processors
ARM Holdings IP cores