Hyundai A7HD

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Hyundai A7HD
A7hd front.jpeg
Manufacturer Hyundai Digital (defunct)
Dimensions 174mm x 118mm x 8.9mm
Release Date April 2012
Website Product Page(defunct)
Specifications
SoC A10 @ 1Ghz
DRAM 1GiB DDR3 @ 360MHz
NAND 8GB
Power DC 5V, 3400mAh 3.7V Li-Ion battery
Features
LCD 1024x600 (7" 17:10 FFS-IPS)
Touchscreen 5-point capacitive (Goodix GT801)
Video HDMI (Type C - mini)
Audio 2.5mm headphone plug, built-in microphone, HDMI
Network WiFi 802.11 b/g/n (Realtek RTL8188CUS)
Storage µSD
USB 1 USB2.0 OTG
Camera 0.3MP (640x480) front

Contents

Identification

On the back of the device, the following is printed:

S7-S
... With Android
Designed by Lovendesign in China
Assembled in China

The PCB has the following silkscreened on it:

RK-S7S01-V1.2_20120215

In android, under Settings->About Tablet, you will find:

  • Model Number: A7 HD
  • Build Number: RKS7S01_A7HD_20120412

Sunxi support

Current status

Supported. Touchscreen unknown.

Images

HW-Pack

BSP

Manual build

  • For building u-boot, use the hyundai_a7hd target.
  • The .fex file can be found in sunxi-boards under as hyundai_a7hd.fex

Everything else is the same as the manual build howto.

Mainline kernel

Use the sun4i-a10-hyundai-a7hd.dts device-tree file for the mainline kernel.

Tips, Tricks, Caveats

FEL mode

There are 4 buttons on the A7HD, the left one is the powerbutton, and any of the three other buttons can be used to trigger FEL mode, as described in the FEL mode howto.

Flaky WiFi

The A7HD has a known issue with less than ideal WiFi reception. The fix is to re-route the WiFi antenna, but in order to do that you need to partly disassemble your device and remove the back.

Further information can be found in this android forum post.

Powerdown with UART attached

The A7HD suffers from the same problem as other A10 devices. When you power down with the UART still attached, some power continues to flow into the device, and it will not power down properly. So disconnect the UART if you need to do a proper power down.

Adding a serial port (voids warranty)

A7HD UART pads

Device disassembly

Carefully insert your plastic tool into the long edges, and push the plastic outwards while pushing the aluminium back plate inward, and work the whole 2 long sides. Now insert your plastic tool into the short edge, and push the aluminium backplate outwards.

Locating the UART

There are some pre-tinned pads available on the front side of the motherboard, right next to the SoC. All you have to do is attach some wires according to our UART howto. Use very thin wires to export this UART, as otherwise you will get pressure points on your LCD and your back cover might not fit properly anymore.

Pictures

Also known as

See also

Hyundai A7HD online Review

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