A20
Datasheet
Revision 1.41
Dec 30, 2013
Copyright © 2013 Allwinner Technology Co., Ltd. All Rights Reserved.
A20
Declaration
THIS A20 DATASHEET IS THE ORIGINAL WORK AND COPYRIGHTED PROPERTY OF ALLWINNER
TECHNOLOGY (“ALLWINNER”). REPRODUCTION IN WHOLE OR IN PART MUST OBTAIN THE WRITTEN
APPROVAL OF ALLWINNER AND GIVE CLEAR ACKNOWLEDGEMENT TO THE COPYRIGHT OWNER.
THE INFORMATION FURNISHED BY ALLWINNER IS BELIEVED TO BE ACCURATE AND RELIABLE.
ALLWINNER RESERVES THE RIGHT TO MAKE CHANGES IN CIRCUIT DESIGN AND/OR SPECIFICA-
TIONS AT ANY TIME WITHOUT NOTICE. ALLWINNER DOES NOT ASSUME ANY RESPONSIBILITY AND
LIABILITY FOR ITS USE. NOR FOR ANY INFRINGEMENTS OF PATENTS OR OTHER RIGHTS OF THE
THIRD PARTIES WHICH MAY RESULT FROM ITS USE. NO LICENSE IS GRANTED BY IMPLICATION OR
OTHERWISE UNDER ANY PATENT OR PATENT RIGHTS OF ALLWINNER. THIS DATASHEET NEITHER
STATES NOR IMPLIES WARRANTY OF ANY KIND, INCLUDING FITNESS FOR ANY PARTICULAR AP-
PLICATION.
THIRD PARTY LICENCES MAY BE REQUIRED TO IMPLEMENT THE SOLUTION/PRODUCT. CUSTOM-
ERS SHALL BE SOLELY RESPONSIBLE TO OBTAIN ALL APPROPRIATELY REQUIRED THIRD PARTY
LICENCES. ALLWINNER SHALL NOT BE LIABLE FOR ANY LICENCE FEE OR ROYALTY DUE IN RE-
SPECT OF ANY REQUIRED THIRD PARTY LICENCE. ALLWINNER SHALL HAVE NO WARRANTY, IN-
DEMNITY OR OTHER OBLIGATIONS WITH RESPECT TO MATTERS COVERED UNDER ANY REQUIRED
THIRD PARTY LICENCE.
Copyright © 2013 Allwinner Technology Co., Ltd. All Rights Reserved.
Allwinner Technology Co., Ltd.
4th Floor, B6 Building, NO.1, Software Road,
Zhuhai, Guangdong Province, China
Contact Us: service@allwinnertech.com
Home Page: www.allwinnertech.com
A20 Datasheet (Revision
1.41)
Copyright © 2013 Allwinner Technology Co., Ltd. All Rights Reserved.
Page 2
A20
Revision History
Revision
1.0
1.1
1.2
1.3
1.4
Date
Feb 27, 2013
March 21, 2013
May 10, 2013
Oct 16, 2013
Dec 30, 2013
Initial version
Revize the logo
Revize VDD-RTC to 1.3V
Modify the recommended operating condition section
Add T
J
and θ
JC
Description
A20 Datasheet (Revision
1.41
)
Copyright © 2013 Allwinner Technology Co., Ltd. All Rights Reserved.
Page 3
A20
Table of Contents
CHAPTER 1
OVERVIEW ................ ........................................................................................................................... 4
CHAPTER 2
FEATURES ............................... ............................................................................................................ 5
CHAPTER 3
BLOCK DIAGRAM .................. ........................................................................................................... 10
CHAPTER 4
4.1.
PIN DESCRIPTION ................ ........................................................................................................... 11
PIN CHARACTERISTICS ................. .......................................................................................................... 11
4.2. GPIO MULTIPLEXING FUNCTIONS ................ ........................................................................................... 20
4.3. DETAILED PIN/SIGNAL DESCRIPTION ......... ............................................................................................ 24
4.4. POWER SIGNAL DESCRIPTION .................... ............................................................................................ 29
CHAPTER 5
5.1.
5.2.
5.3.
5.4.
ELECTRICAL CHARACTERISTICS ... ............................................................................................ 31
ABSOLUTE MAXIMUM RATINGS ............................................................................ ................................. 31
RECOMMENDED OPERATING CONDITIONS ...................................................... ................................. 31
DC ELECTRICAL CHARACTERISTICS ................................................................................. .................. 32
OSCILLATOR ELECTRICAL CHARACTERISTICS ..................................................................... ........... 32
5.4.1. 24MHZ OSCILLATOR CHARACTERISTICS .................................................................................... 32
5.4.2. 32768HZ OSCILLATOR CHARACTERISTICS ................................................................................. 33
5.5.
POWER UP/DOWN SEQUENCE ...............................................................................................................33
CHAPTER 6
6.1.
PIN ASSIGNMENT .............................................................................................................................35
PIN MAP ........................................................................................................................................................35
6.2. PACKAGE DIMENSION ................................................................................................................................36
A20 Datasheet (Revision
1.41)
Copyright © 2013 Allwinner Technology Co., Ltd. All Rights Reserved.
Page 4
Overview
1
OVERVIEW
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.
A20 Datasheet (Revision
1.41)
Copyright © 2013 Allwinner Technology Co., Ltd. All Rights Reserved.
Page 5