upd78f0124hgba1-8et-a Renesas Electronics Corporation., upd78f0124hgba1-8et-a Datasheet - Page 44

• Manufacturer Part Number: upd78f0124hgba1-8et-a
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

3.1.1 Internal program memory space
counter (PC).
(1) Vector table area
(2) CALLT instruction table area
(3) Option byte area
(4) CALLF instruction entry area
44
The internal program memory space stores the program and table data. Normally, it is addressed with the program
78K0/KD1+ products incorporate internal ROM (flash memory), as shown below.
The internal program memory space is divided into the following areas.
The 64-byte area 0000H to 003FH is reserved as a vector table area. The program start addresses for branch
upon reset signal input or generation of each interrupt request are stored in the vector table area.
Of the 16-bit address, the lower 8 bits are stored at even addresses and the higher 8 bits are stored at odd
addresses.
The 64-byte area 0040H to 007FH can store the subroutine entry address of a 1-byte call instruction (CALLT).
The option byte area is assigned to the 1-byte area of 0080H. Refer to CHAPTER 23 OPTION BYTE for details.
The area 0800H to 0FFFH can perform a direct subroutine call with a 2-byte call instruction (CALLF).
Vector Table Address
PD78F0122H
PD78F0123H
PD78F0124H, 78F0124HD
000AH
000CH
000EH
0000H
0004H
0006H
0008H
0010H
0012H
0014H
0016H
0018H
Part Number
RESET input, POC, LVI,
clock monitor, WDT
INTLVI
INTP0
INTP1
INTP2
INTP3
INTP4
INTP5
INTSRE6
INTSR6
INTST6
INTCSI10/INTST0
Interrupt Source
Table 3-2. Internal ROM Capacity
CHAPTER 3 CPU ARCHITECTURE
Flash memory
User’s Manual U16962EJ3V0UD
Table 3-3. Vector Table
Structure
Vector Table Address
001CH
002CH
Internal ROM
001AH
001EH
0020H
0022H
0024H
0026H
0028H
002AH
002EH
0030H
16384
24576
32768
8 bits (0000H to 3FFFH)
8 bits (0000H to 5FFFH)
8 bits (0000H to 7FFFH)
INTTMH1
INTTMH0
INTTM50
INTTM000
INTTM010
INTAD
INTSR0
INTWTI
INTTM51
INTKR
INTWT
INTP6
Capacity
Interrupt Source