參數(shù)資料
型號: μPD789025
廠商: NEC Corp.
英文描述: 8 Bit Single Chip Microcontrollers(8位單片微控制器)
中文描述: 8位單片機微控制器(8位單片微控制器)
文件頁數(shù): 14/52頁
文件大小: 275K
代理商: ΜPD789025
14
μ
PD789022, 789024, 789025, 789026
4. MEMORY SPACE
The
μ
PD789022
space. Figure 4-1 shows the memory map.
Note 1
,
μ
PD789024
Note 1
,
μ
PD789025
,
and
μ
PD789026 can each access up to 64 Kbytes of memory
Figure 4-1. Memory Map
FFFFH
mmmmH
mmmmH – 1
FF00H
FEFFH
nnnnH + 1
nnnnH
0000H
nnnnH
0000H
0080H
007FH
0040H
003FH
002CH
002BH
Data
memory space
Program
memory space
Special function registers
256
×
8 bits
Internal high-speed RAM
Reserved
Internal ROM
Program area
CALLT table area
Program area
Vector table area
Note 2
Note 2
Notes 1.
Under development
2.
The sizes of the internal ROM and high-speed RAM vary depending on the model (see the following
table).
Product name
Last address of internal ROM
nnnnH
Start address of internal high-
speed RAM mmmmH
μ
PD789022
0FFFH
FE00H
μ
PD789024
1FFFH
μ
PD789025
2FFFH
FD00H
μ
PD789026
3FFFH
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