参数资料
型号: AT87251G2D-SLSUM
厂商: ATMEL CORP
元件分类: 微控制器/微处理器
英文描述: B/16-BIT MICROCONTROLLER WITH SERIAL COMMUNICATION INTERFACES
中文描述: 16-BIT, OTPROM, 24 MHz, MICROCONTROLLER, PQCC44
封装: GREEN, PLASTIC, LCC-44
文件页数: 25/76页
文件大小: 1175K
代理商: AT87251G2D-SLSUM
25
AT/TSC8x251G2D
4135D–8051–08/05
4. If this instruction addresses external memory location, add 2(N+2) to the number of
states (N: number of wait states).
Table 21.
Summary of Increment and Decrement Instructions
Notes:
1. A shaded cell denotes an instruction in the C51 Architecture.
2. If this instruction addresses an I/O Port (Px, x = 0-3), add 2 to the number of states.
Add 3 if it addresses a Peripheral SFR.
IncrementINC <dest>dest opnd
dest opnd + 1
IncrementINC <dest>, <src>dest opnd
dest opnd + src opnd
DecrementDEC <dest>dest opnd
dest opnd - 1
DecrementDEC <dest>, <src>dest opnd
dest opnd - src opnd
Mnemonic
<dest>,
<src>
(1)
Comments
Binary Mode
Source Mode
Bytes
States
Bytes
States
INC
DEC
A
ACC by 1
1
1
1
1
Rn
Register by 1
1
1
2
2
dir8
Direct address (on-chip RAM or
SFR) by 1
2
2
(2)
2
2
(2)
at Ri
Indirect address by 1
1
3
2
4
INC
DEC
Rm, #short
Byte register by 1, 2, or 4
3
2
2
1
WRj, #short
Word register by 1, 2, or 4
3
2
2
1
INC
DRk, #short
Double word register by 1, 2, or 4
3
4
2
3
DEC
DRk, #short
Double word register by 1, 2, or 4
3
5
2
4
INC
DPTR
Data pointer by 1
1
1
1
1
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