参数资料
型号: ST72PSCR1R4T1
厂商: 意法半导体
英文描述: 8-BIT LOW-POWER, FULL-SPEED USB MCU WITH 16K FLASH, 768 RAM, SMARTCARD I/F, TIMER
中文描述: 8位低功耗,全速USB微控制器与16K的闪存,768内存,智能卡的I /楼,计时器
文件页数: 70/102页
文件大小: 1413K
代理商: ST72PSCR1R4T1
ST7SCR
70/102
ld A,$10
13 INSTRUCTION SET
13.1 ST7 ADDRESSING MODES
The ST7 Core features 17 different addressing
modes which can be classified in 7 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 subdi-
vided in two sub-modes called long and short:
– Long addressing mode is more powerful be-
cause it can use the full 64 Kbyte address space,
however it uses more bytes and more CPU cy-
cles.
– 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 in-
structions 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 21. ST7 Addressing Mode Overview
Addressing Mode
Inherent
Immediate
Direct
Indexed
Indirect
Relative
Bit operation
Example
nop
ld A,#$55
ld A,$55
ld A,($55,X)
ld A,([$55],X)
jrne loop
bset byte,#5
Mode
Syntax
Destination
Pointer
Address
(Hex.)
Pointer Size
(Hex.)
Length
(Bytes)
Inherent
nop
+ 0
Immediate
ld A,#$55
+ 1
Short
Direct
00..FF
+ 1
Long
Direct
ld A,$1000
0000..FFFF
+ 2
No Offset
Direct
Indexed
ld A,(X)
00..FF
+ 0
Short
Direct
Indexed
ld A,($10,X)
00..1FE
+ 1
Long
Direct
Indexed
ld A,($1000,X)
0000..FFFF
+ 2
Short
Indirect
ld A,[$10]
00..FF
00..FF
byte
+ 2
Long
Indirect
ld A,[$10.w]
0000..FFFF
00..FF
word
+ 2
Short
Indirect
Indexed
ld A,([$10],X)
00..1FE
00..FF
byte
+ 2
Long
Indirect
Indexed
ld A,([$10.w],X)
0000..FFFF
00..FF
word
+ 2
Relative
Direct
jrne loop
PC+/-127
+ 1
Relative
Indirect
jrne [$10]
PC+/-127
00..FF
byte
+ 2
Bit
Direct
bset $10,#7
00..FF
+ 1
Bit
Indirect
bset [$10],#7
00..FF
00..FF
byte
+ 2
Bit
Direct
Relative
btjt $10,#7,skip
00..FF
+ 2
Bit
Indirect
Relative
btjt [$10],#7,skip
00..FF
00..FF
byte
+ 3
相关PDF资料
PDF描述
ST72SCR1x4M1 CKTBKR
ST72FSCR1x4M1 CKTBKR
ST72PSCR1x4M1 8-BIT LOW-POWER, FULL-SPEED USB MCU WITH 16K FLASH, 768 RAM, SMARTCARD I/F, TIMER
ST72SCR1x4T1 8-BIT LOW-POWER, FULL-SPEED USB MCU WITH 16K FLASH, 768 RAM, SMARTCARD I/F, TIMER
ST72FSCR1x4T1 8-BIT LOW-POWER, FULL-SPEED USB MCU WITH 16K FLASH, 768 RAM, SMARTCARD I/F, TIMER
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