NEC uPD78P078 - Manual (Page 104)

104
CHAPTER 5 CPU ARCHITECTURE
5.1.1 Internal program memory space
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.
Table 5-1. Internal ROM Capacities
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.