参数资料
型号: mPD789322
厂商: NEC Corp.
元件分类: 8位微控制器
英文描述: 8-bit Microcontroller with 2/4/8K Bytes In-System Programmable Flash
中文描述: 8位微控制器与2/4/8K字节在系统可编程闪存
文件页数: 7/96页
文件大小: 482K
代理商: MPD789322
Preliminary Product Information U14673EJ1V0PM00
15
PD789322,789324,789326,789327
4.2 Data Memory Addressing
The
PD789322, 789324, 789326, and 789327 are provided with a variety of addressing modes to improve the
operability of the memory.
In the area that incorporates data memory (FD00H to FFFFH) in particular, specific
addressing modes that correspond to the particular functions of an area, such as the special function registers
(SFRs), are available. Figure 4-2 shows the data memory addressing modes.
Figure 4-2. Data Memory Addressing Modes
Special function registers (SFRs)
256
× 8 bits
Internal high-speed RAM
LCD display RAM
24
× 8 bits
F F F F H
0 0 0 0 H
Direct addressing
Register indirect
addressing
Based addressing
F F 0 0 H
F E F F H
F F 2 0 H
F F 1 F H
F E 2 0 H
F E 1 F H
SFR addressing
Short direct
addressing
mmmmH
1
F A 1 8 H
F A 1 7 H
Reserved
F A 0 0 H
F 9 F F H
Reserved
Internal ROM
Note
n n n n H
+1
n n n n H
Note The internal ROM capacity and internal high-speed RAM capacity depend on the products (see the next
table).
Relevant Product Name
Internal ROM Last Address
nnnnH
Internal High-Speed RAM Start Address
mmmmH
PD789322
0FFFH
PD789324
1FFFH
FE00H
PD789326
3FFFH
PD789327
5FFFH
FD00H
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相关代理商/技术参数
参数描述
MPD789322GB-XXX-8ET 制造商:NEC 制造商全称:NEC 功能描述:8-BIT SINGLE-CHIP MICROCONTROLLER
MPD789324 制造商:NEC 制造商全称:NEC 功能描述:8-BIT SINGLE-CHIP MICROCONTROLLER
MPD789324GB-XXX-8ET 制造商:NEC 制造商全称:NEC 功能描述:8-BIT SINGLE-CHIP MICROCONTROLLER
MPD789326 制造商:NEC 制造商全称:NEC 功能描述:8-BIT SINGLE-CHIP MICROCONTROLLER
MPD789326GB-XXX-8ET 制造商:NEC 制造商全称:NEC 功能描述:8-BIT SINGLE-CHIP MICROCONTROLLER