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: 35/76页
文件大小: 1175K
代理商: AT87251G2D-SLSUM
35
AT/TSC8x251G2D
4135D–8051–08/05
Table 28.
Summary of Exchange, Push and Pop 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 1 to the number of states.
Add 2 if it addresses a Peripheral SFR.
3. 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.
Exchange bytesXCH A, <src>(A)
src opnd
Exchange DigitXCHD A, <src>(A)
3:0
src opnd
3:0
PushPUSH <src>(SP)
(SP) +1; ((SP))
src opnd;
(SP)
(SP) + size (src opnd) - 1
PopPOP <dest>(SP)
(SP) - size (dest opnd) + 1;
dest opnd
((SP)); (SP)
(SP) -1
Mnemonic
<dest>,
<src>
(1)
Comments
Binary Mode
Source Mode
Bytes
States
Bytes
States
XCH
A, Rn
ACC and register
1
3
2
4
A, dir8
ACC and direct address (on-chip
RAM or SFR)
2
3
(3)
2
3
(3)
A, at Ri
ACC and indirect address
1
4
2
5
XCHD
A, at Ri
ACC low nibble and indirect address
(256 bytes)
1
4
2
5
PUSH
dir8
Push direct address onto stack
2
2
(2)
2
2
(2)
#data
Push immediate data onto stack
4
4
3
3
#data16
Push 16-bit immediate data onto
stack
5
5
4
5
Rm
Push byte register onto stack
3
4
2
3
WRj
Push word register onto stack
3
5
2
4
DRk
Push double word register onto
stack
3
9
2
8
POP
dir8
Pop direct address (on-chip RAM or
SFR) from stack
2
3
(2)
2
3
(2)
Rm
Pop byte register from stack
3
3
2
2
WRj
Pop word register from stack
3
5
2
4
DRk
Pop double word register from stack
3
9
2
8
相关PDF资料
PDF描述
AT80251G2D B/16-BIT MICROCONTROLLER WITH SERIAL COMMUNICATION INTERFACES
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