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ST7LUS5 bảng dữ liệu(PDF) 81 Page - STMicroelectronics

tên linh kiện ST7LUS5
Giải thích chi tiết về linh kiện  8-bit low cost, low pin-count MCU for automotive,with single voltage Flash memory, ADC, timers
PDF  124 Pages
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
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ST7LUS5 bảng dữ liệu(HTML) 81 Page - STMicroelectronics

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ST7LUS5, ST7LU05, ST7LU09
Instruction set
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11
Instruction set
11.1
ST7 addressing modes
The ST7 core features 17 different addressing modes which can be classified in seven main
groups:
The ST7 Instruction set is designed to minimize the number of bytes required per
instruction: To do so, most of the addressing modes may be divided in two submodes called
long and short:
●
Long addressing mode is more powerful because it can use the full 64 Kbyte address
space, however it uses more bytes and more CPU cycles.
●
Short addressing mode is less powerful because it can generally only access page
zero (0000h - 00FFh range), but the instruction size is more compact, and faster. All
memory to memory instructions use short addressing modes only (CLR, CPL, NEG,
BSET, BRES, BTJT, BTJF, INC, DEC, RLC, RRC, SLL, SRL, SRA, SWAP)
The ST7 Assembler optimizes the use of long and short addressing modes.
Table 53.
Addressing modes
Addressing mode
Example
Inherent
nop
Immediate
ld A,#$55
Direct
ld A,$55
Indexed
ld A,($55,X)
Indirect
ld A,([$55],X)
Relative
jrne loop
Bit operation
bset
byte,#5



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