Tiny210V2 Microprocessor Temperature & Heating

I have a Tiny210V2 SDK with a 7" LCD mounted on it. S5PV210 User Manual
states that operating temperature of the microprocessor is in range of
-25°C to 85°C. When I turn the board on and work with it for a while, the
microprocessor's temperature goes as high as 85°C! By unmounting the LCD
and putting it afar while still connected, air flow decreases the
temperature to a minimum of 75°C.

The board is supposed to be used in a closed plastic case and I'm afraid
this would cause serious overheating issues. Has anyone else encountered
this problem? Should I include cooling features such as heat sinks or fans?

Thank you :-)

I noticed this. I talked to the designers, who are just back from a Chinese
holiday, and it is top of the priority list. I think some sort of heat sink
will be needed.

Oh I missed, thank you TheRegnirps. I contacted www.andahammer.com support
about the issue and they told me:

"Something is not right. It may be as simple as not using all the ground
and power connections to the ground and power planes to carry away heat.
The BGA package has a lot of ground and power points."

While reviewing the core module design, they suggested using a silicone
rubber heat pad or a small heat sink in order to take away the heat.

Hi,

Heating of BGA is due to many factors.....

1.If appropriate Power Sequence is not given to the Processor core.
2. If required Pull up are not added.
3. If Power and GND is not Properly made in the split planes.
4. If Analog circuit is effecting the Digital circuit which includes
Processor.

My Doubt:

1. Is the Device getting heated up, from the day u buy from market. or it
got up with issue....after somedays.....?

Thanks,
Srikanth.