A20

Allwinner A31 SoC features a Dual-Core Cortex-A7 ARM Processor SoC, and an Mali400 MP2 GPU from ARM.

Allwinner A31 is can mostly be seen as a low-end or budget version of the A31 because it shares its Cortex-A7 ARM CPU architecture, but at the same time it is also a bit similar to the A10 because it also features a Mali400 GPU, and in addition, the A20 is pin-compatible with its predecessor single-core A10, that means it could greatly simplify the product development process and allows faster time to market. Besides, when compared with A10, A20 is suprior in its ultra-low power consumption, which will deeply impress Android tablet and se-top box users.

=Overview= Allwinner Technology has extended its product lineup to cover a dual-core mobile application processor A20 to better meet the Android tablet and se-top box market demand.

A20 CPU architecture consists of dual ARM Cortex-A7 cores to deliver decent computing capability while consuming less power, and integrates the Mali400 MP2 GPU. It also features CedarX multimedia processing unit that is capable of up to 2160p (3840x1080@30fps 4k resolution or 1080p 3D decoding) video decoding, with integrated HDMI 1.4 output support, and H.264 HP (High Profile) in 1080p at 30fps video encoding.

Officially Allwinner only supports Android 4.2 or above on A20 so far.

Cortex-A7
Cortex-A7 is 100% ISA compatible with the Cortex-A15, this includes the new virtualization instructions, integer divide support and 40-bit memory addressing. Any code running on an A15 can run on a Cortex A7, just slower. This is a very important feature as it enables SoC vendors to build chips with both Cortex A7 and Cortex A15 cores, switching between them depending on workload requirements. ARM calls this a big.LITTLE configuration.

= See also =
 * A10
 * A10s
 * A13
 * A31

=References=

= External links =
 * Product Page