参数资料
型号: S3P9664-SK
元件分类: 微控制器/微处理器
英文描述: 8-BIT, OTPROM, 6 MHz, MICROCONTROLLER, PDSO20
封装: 0.300 INCH, SOP-20
文件页数: 60/148页
文件大小: 784K
代理商: S3P9664-SK
ADDRESSING MODES
S3C9664/P9664 (Preliminary Spec)
3-6
INDIRECT REGISTER ADDRESSING MODE (Concluded)
dst
OPCODE
4-Bit Working
Register Address
Sample Instructions:
LCD
R5,@RR6
; Program memory access
LDE
R3,@RR14
; External data memory access
LDE
@RR4, R8
; External data memory access
Program Memory
Register File
src
Value used in
Instruction
OPERAND
Example Instruction
References either
Program Memory or
Data Memory
Program Memory
or
Data Memory
Next 3 Bits Point
to Working
Register Pair
(1 of 8)
LSB Selects
Register
Pair
16-Bit
address
points to
program
memory
or data
memory
CFH
.
C0H
Figure 3-6. Indirect Working Register Addressing to Program or Data Memory
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