参数资料
型号: UPD70F3261YGF-JBT-A
元件分类: 微控制器/微处理器
英文描述: 32-BIT, FLASH, 32 MHz, MICROCONTROLLER, PQFP100
封装: 14 X 20 MM, PLASTIC, QFP-100
文件页数: 104/129页
文件大小: 8549K
代理商: UPD70F3261YGF-JBT-A
CHAPTER 3 CPU FUNCTION
User’s Manual U16541EJ5V1UD
76
(a) Application example of wraparound
If R = r0 (zero register) is specified for the LD/ST disp16 [R] instruction, a range of addresses 00000000H
±32 KB can be addressed by sign-extended disp16. All the resources, including the internal hardware, can
be addressed by one pointer.
The zero register (r0) is a register fixed to 0 by hardware, and practically eliminates the need for registers
dedicated to pointers.
Example
μPD703261Y
Internal ROM area
On-chip peripheral
I/O area
Internal RAM area
32 KB
4 KB
28 KB
(R = )
00007FFFH
00000000H
FFFFF000H
FFFFEFFFH
FFFFFFFFH
FFFF8000H
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