NEC PD78P214 Manuale Utente

37

The 

µPD78214 can access a memory space of up to 1M byte.  Figs. 3-1 to 3-4 show the corresponding memory

maps.  The mapping of program memory depends on the status of the EA pin.  The EA pin of the 

µPD78213 must

be tied low.

µPD78212
Program memory is mapped to the internal ROM (8K bytes:  00000H to 01FFFH) and external memory (56704
bytes:  02000H to 0FD7FH).  External memory is accessed in external memory expansion mode.  The area
mapped as external memory can also be used as data memory.

Data memory is mapped to internal RAM (384 bytes:  0FD80H to 0FEFFH).  In 1M-byte expansion mode,
external memory (960K bytes:  10000H to FFFFFH) is mapped as expanded data memory.

µPD78213
Program memory is mapped to external memory (64768 bytes:  00000H to 0FCFFH).  This area can also be used
as data memory.

Data memory is mapped to internal RAM (512 bytes:  0FD00H to 0FEFFH).  In 1M-byte expansion mode,
external memory (960K bytes:  10000H to FFFFFH) is mapped as expanded data memory.

µPD78214, µPD78P214
Program memory is mapped to internal ROM (16K bytes:  00000H to 03FFFH) and external memory (48384
bytes:  04000H to 0FCFFH).  External memory is accessed in external memory expansion mode.  The area
mapped as external memory can also be used as data memory.

Data memory is mapped to internal RAM (512 bytes:  0FD00H to 0FEFFH).  In 1M-byte expansion mode,
external memory (960K bytes:  10000H to FFFFFH) is mapped as expanded data memory.