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NAND Flash

Allwinner A20 processor is a dual-core ARM Cortex-A7 mobile application solution designed for tablet and smart

TV applications.

A20 processor is based on a dual-core ARM Cortex-A7 CPU architecture, which is the most energy efficient ap-

plication processor from ARM so far and incorporates all the features of Cortex-A15. It also integrates the powerful

ARM Mali400 MP2 GPU, delivering a reliable system performance as well as good game compatibility. Besides,

A20 supports 2160p video decoding and H.264 HP 1080p video encoding.

Additionally, A20 processor features a wide range of interfaces and connectivity, including 4-CH CVBS in, 4-CH

CVBS out, HDMI with HDCP, VGA, LVDS/RGB LCD, SATA, USB, and GMAC, etc. More importantly, A20 proces-

sor is pin-compatible with its predecessor A10, which greatly simplifies the product design process and makes the

upgrade of a design much easier.

Dual-Core CPU

● SDRAM

Support DDR3/DDR3L/DDR2

●

Dual Cortex-A7

Support 32-bit bus width

ARMv7 ISA standard ARM instruction set

Thumb-2

Support 2GB address space

Jazeller RCT

NEON Advanced SIMD

VFPv4 floating point

● NAND Flash

Comply to ONFI 2.3 and Toggle 1.0

Support 64 bits ECC per 512 bytes or 1024 bytes

Support 8bits data bus width

Hardware virtualization support

Large Physical Address Extensions(LPAE)

JTAG debug

Support 1.8V/3.3V signal voltage

Support 1K/2K/4K/8K/16K page size

Support up to 8 CE and 2 RB

One general timer for individual CPU

32KB Instruction and 32KB Data L1 Cache for

individual CPU

–Support system boot from NAND flash

Support SLC/MLC NAND and EF-NAND

Support SDR/DDR NAND interface

Graphic Engine

●

3D

Mali400 MP2 GPU

Support OpenGL ES 2.0/ OpenVG 1.1 standard

● SD/MMC Interface

Comply with eMMC standard specification V4.3

Comply with SD physical layer specification V3.0

●

2D

Support BLT and ROP2/3/4

–Comply with SDIO card specification V2.0

–Support 1/4/8 bits bus width

Support 90° /180° /270° rotation

–Support HS/DS/SDR12/SDR25 bus mode

Support mirror/ alpha (plane and pixel alpha) /

color key

–_{Support eMMC mandatory and alternative boo}

Format conversion: ARGB 8888/4444/1555,

RGB565, MONO 1/2/4/8bpp, Palette 1/2/4/8bpp

(input only), YUV 444/422/420

operations

–_{Support four independent SD/MMC/SDIO}

controllers

–

Support SDSC/SDHC/SDXC/MMC/ RS-MMC card

Memory

–Support eMMC/iNand Flash

–

Support 1GB/2GB/4GB/8GB/16GB/32GB/64GB

128GB SD/MMC card

●

Internal BROM

/

Support system boot from NAND Flash, SPI Nor

Flash (SPI0), SD Card/TF card (SDC0/2)

Support SDIO interrupt detection

Support descriptor-based internal DMA controller

for efficient scatter and gather operations