The microprocessor is convenient for international shipping since it is packaged in BGA. Datasheets for 272 pin functions can be found here. To transfer data, there is a bandwidth of 64b. If the temperature is higher than 85°C, the microprocessor should not operate. It is expected that the CPU will reach a top frequency of 250MHz.
UPD30500AS2-250 Features
64b-Bit Data Bus Width
UPD30500AS2-250 Applications
There are a lot of NEC UPD30500AS2-250 Microprocessor applications.