UPD78F9502MA-CAC-A NEC, UPD78F9502MA-CAC-A Datasheet - Page 26

• Manufacturer Part Number: UPD78F9502MA-CAC-A
• Description: 8BIT MCU, 4K FLASH, 128B RAM, SMD
• Manufacturer: NEC

Specifications of UPD78F9502MA-CAC-A

• Controller Family/series: UPD78F
• No. Of I/o's: 8
• Ram Memory Size: 128Byte
• Cpu Speed: 10MHz
• No. Of Timers: 2
• No. Of Pwm: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 4KB
• Oscillator Type: External, Internal

3.1.1 Internal program memory space
program counter (PC).
following capacities.
26
The internal program memory space stores programs and table data. This space is usually addressed by the
The
The following areas are allocated to the internal program memory space.
(1)
(2)
(3)
(4)
Vector table area
The 20-byte area of addresses 0000H to 0013H is reserved as a vector table area. This area stores program
start addresses to be used when branching by RESET or interrupt request generation.
16-bit address, the lower 8 bits are stored in an even address, and the higher 8 bits are stored in an odd
address.
CALLT instruction table area
The subroutine entry address of a 1-byte call instruction (CALLT) can be stored in the 64-byte area of
addresses 0040H to 007FH.
Option byte area
The option byte area is the 1-byte area of address 0080H. For details, refer to CHAPTER 13 OPTION BYTE.
Protect byte area
The protect byte area is the 1-byte area of address 0081H. For details, refer to CHAPTER 14 FLASH
MEMORY.
PD78F9500, 78F9501, 78F9502 provide the following internal ROMs (or flash memory) containing the
PD78F9500
PD78F9501
PD78F9502
Part Number
0000H
0006H
0008H
000AH
000CH
Vector Table Address
Table 3-1. Internal ROM Capacity
Preliminary User’s Manual U18681EJ1V0UD
CHAPTER 3 CPU ARCHITECTURE
Table 3-2. Vector Table
Flash memory
Structure
Reset
INTLVI
INTP0
INTP1
INTTMH1
Interrupt Request
Internal ROM
1,024
2,048
4,096
8 bits
8 bits
8 bits
Capacity
Of a