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.
Summary of Contents for PD78076
Page 2: ...2 MEMO ...
Page 12: ...12 MEMO ...
Page 48: ...48 MEMO ...
Page 64: ...64 MEMO ...
Page 82: ...82 MEMO ...
Page 100: ...100 MEMO ...
Page 130: ...130 MEMO ...
Page 180: ...180 MEMO ...
Page 222: ...222 MEMO ...
Page 248: ...248 MEMO ...
Page 288: ...288 MEMO ...
Page 308: ...308 MEMO ...
Page 364: ...364 MEMO ...
Page 494: ...494 MEMO ...
Page 526: ...526 MEMO ...
Page 544: ...544 MEMO ...
Page 558: ...558 MEMO ...
Page 580: ...580 MEMO ...
Page 596: ...596 MEMO ...
Page 598: ...598 MEMO ...
Page 626: ...626 MEMO ...