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Remote software update in TMS320F28027 MCU

Other Parts Discussed in Thread: TMS320F28027

Dear All,

One of my customer is working on TMS320F28027 MCU for recitifier product, they would like to know below things whether it is possible. 

I have a rectifier installed in one state and I want to update the rectifier software from other state. Then I must be able to update it. So the process will be like
1. I will send the software to my master controller through Ethernet or any other media. This lies in customeer scope.
2. Next once the master controller has received the software it will transfer that to my rectifier controller through RS485 communication. So does my rectifier controller have the feature of updating through RS485 ? or should I add any extra hardware to get this feature?

Aravind.