NEC PD78078 用户手册

The internal program memory space

 stores programs and table data.  This is generally accessed by the program

counter (PC).  The 

µ

PD78078 and 78078Y Subseries have various size of internal ROMs or PROM as shown below.

Part number

Internal ROM

Type

Capacity

µ

PD78076, 78076Y

Mask ROM

49152 x 8 bits

µ

PD78078, 78078Y

61440 x 8 bits

µ

PD78P078, 78P078Y

PROM

The internal program memory is divided into three areas: vector table area, CALLT instruction table area, and

CALLF instruction table area.  These areas are described on the next page.