UPD78F0138 NEC, UPD78F0138 Datasheet - Page 433

• Manufacturer Part Number: UPD78F0138
• Description: (UPD78xxxx) 8-Bit Single-Chip Microcontrollers
• Manufacturer: NEC

26.6 Program Execution Flow
Figures 26-8 and 26-9 show the program transition diagrams when the ROM correction is used.
(1) Branches to address F7FDH when fetch address matches correction address
(2) Branches to correction program
(3) Returns to internal ROM (internal flash memory) program
Remark Area filled with diagonal lines: Internal expansion RAM
JUMP: Correction program start address
Figure 26-8. Program Transition Diagram (When One Place Is Corrected)
F7FDH
FFFFH
F7FFH
0000H
JUMP
xxxxH
(Internal flash memory)
Correction program
CHAPTER 26 ROM CORRECTION
Correction place
Internal ROM
Internal ROM
BR !JUMP
User’s Manual U16228EJ2V0UD
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