94CHAPTER 5 CPU ARCHITECTUREFigure 5-4. Memory Map (μPD78P054)0000HData memoryspaceInternal PROM32768 × 8 bits7FFFH1000H0FFFH0800H07FFH0080H007FH0040H003FH0000HCALLF Entry AreaCALLT Table AreaVector Table AreaProgram AreaProgram AreaInternal Buffer RAM32 × 8 bitsExternal Memory31360 × 8 bitsReservedProgrammemoryspace8000H7FFFHFA80HFA7FHFAC0HFABFHFAE0HFADFHFEE0HFEDFHFF00HFEFFHFFFFHInternal High-speed RAM1024 × 8 bitsSpecial FunctionRegisters (SFRs)256 × 8 bitsReservedFB00HFAFFHGeneral Registers32 × 8 bits