参数资料
型号: m789436
厂商: NEC Corp.
元件分类: 8位微控制器
英文描述: 8-Bit Single-Chip Microcontrollers
中文描述: 8位单芯片微控制器
文件页数: 96/144页
文件大小: 1378K
代理商: M789436
CHAPTER 3 CPU ARCHITECTURE
User’s Manual U15075EJ1V0UM00
55
3.1.4 Data memory addressing
The
PD789426, 789436, 789446, and 789456 Subseries are provided with a variety of addressing modes to
make memory manipulation as efficient as possible. At the addresses corresponding to data memory area (FD00H
to FFFFH) especially, specific addressing modes that correspond to the particular function an area, such as the
special function registers are available. Figures 3-7 through 3-12 show the data memory addressing modes.
Figure 3-7. Data Memory Addressing (
PD789425, 789435)
Special function registers (SFRs)
256
× 8 bits
Internal high-speed RAM
512
× 8 bits
Internal ROM
12288
× 8 bits
FFFFH
0000H
Direct adressing
Register indirect
addressing
Based addressing
FF00H
FEFFH
FF20H
FF1FH
FE20H
FE1FH
SFR addressing
Short direct
addressing
LCD display RAM
5
× 4 bits
Reserved
FD00H
FCFFH
FA00H
F9FFH
3000H
2FFFH
FA05H
FA04H
相关PDF资料
PDF描述
m789446 8-Bit Single-Chip Microcontrollers
m789456 8-Bit Single-Chip Microcontrollers
M7A3P1000-1FG144FG144 FPGA, 1000000 GATES, PBGA144
M7A3P1000-1FG144IFG144 FPGA, 1000000 GATES, PBGA144
M7A3P1000-1FG256FG256 FPGA, 1000000 GATES, PBGA256
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