ABB water flow meter Modbus FEX100-MB need to help

Dear all
Thank for watching and reading
I have ABB water flow meter
Model : FET1211A0Y1A2M1
We have problem with modbus mainboard
We found ic with 16 pin on this board broken and can’t not reading the name of this IC .
I need to change this but can not find wich IC can replace for this boadr .
Please help me “ dataset “ of this and if i want to change the new IC , we need to know about what ?
Thank you and best regard
 

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