參數(shù)資料
型號: μPD789405
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): 18/128頁
文件大?。?/td> 607K
代理商: ΜPD789405
18
μ
PD789405, 789406, 789407
4. CPU ARCHITECTURE
4.1
Memory Space
The
μ
PD789405,
μ
PD789406, and
μ
PD789407 can each access up to 64 Kbytes of memory space. Figure 4-1
shows the memory map.
Figure 4-1. Memory Map
Special function register
256
8 bits
Built-in high-speed RAM
256
8 bits
RAM space for LCD data
28
8 bits
Program memory
space
Data memory space
Program area
Program area
CALLT table area
Unusable
Vector table area
Built-in ROM
Note
Unusable
F F F F H
F F F F H
F E F F H
F D 0 0 H
F C F F H
FA 1 C H
FA 1 B H
n n n n H
0 0 8 0 H
0 0 7 F H
0 0 4 0 H
0 0 3 F H
0 0 2 4 H
0 0 2 3 H
0 0 0 0 H
0 0 0 0 H
F A 0 0 H
F 9 F F H
n n n n H
n n n n H + 1
Note
The size of the built-in ROM varies depending on the model. (See the following table.)
Product name
Last address of built-in ROM
nnnnH
μ
PD789405
2FFFH
μ
PD789406
3FFFH
μ
PD789407
5FFFH
相關PDF資料
PDF描述
μPD789407 8 Bit Single Chip Microcontrollers(8位單片微控制器)
μPD789406 8 Bit Single Chip Microcontrollers(8位單片微控制器)
μPD789417 8 Bit Single Chip Microcontrollers(8位單片微控制器)
μPD789415 8 Bit Single Chip Microcontrollers(8位單片微控制器)
μPD789416 8 Bit Single Chip Microcontrollers(8位單片微控制器)
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