Peripherals—IP2022 User’s Manual 322 www.ubicom.com iwrite/iwritei   instructions.    Programs    cannot    execute directly out of external memory, and commands on the ISD/ISP
interfaces  cannot  directly  access  external  memory.  Like  data
memory,  however,  external  memory  can  be  accessed  over  the
ISD/ISP  interface  by  executing  instructions  which  move  data
between memory and the W register. Figure 4-19  External Memory Map 515-090.eps Program RAM Reserved 0x000000 15 0 0x004000 Flash Program Memory 0x01FFFE 0x010000    Byte
Address 0x003FFE 0x00FFFE Reserved 0x020000 External Memory 0x800000 0x7FFFFE 0x81FFFE