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PM0044 Datasheet(PDF) 114 Page - STMicroelectronics

No. de pieza PM0044
Descripción Electrónicos  STM8 CPU programming manual
PDF  162 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

PM0044 Datasheet(HTML) 114 Page - STMicroelectronics

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STM8 instruction set
PM0044
114/162
Doc ID 13590 Rev 3
Syntax
LD dst,src
e.g. LD A,#$15
Operation
dst <= src
Description
Load the destination byte with the source byte. The dst and src can be a
register, a byte (low/high) of an index register or a memory/data byte. When
half of an index register is loaded, the other half remains unchanged.
Instruction overview
N
⇒
R7
Set if bit 7 of the result is set (negative value), cleared otherwise.
Z
⇒
R7.R6.R5.R4.R3.R2.R1.R0
Set if the result is zero (0x00), cleared otherwise.
Detailed description
LD
Load
LD
mnem
dst
src
Affected condition flags
VI1
H
I0
N
Z
C
LD
Reg
Mem
-
-
-
-
N
Z
-
LD
Mem
Reg
-
-
-
-
N
Z
-
LD
Reg
Reg
--
-----
dst
src
Asm
cy
lgth
Op-code(s)
ST7
A
#byte
LD A,#$55
1
2
A6
XX
✗
Ashortmem
LD A,$50
1
2
B6
XX
✗
A
longmem
LD A,$5000
1
3
C6
MS
LS
✗
A
(X)
LD A,(X)
1
1
F6
✗
A
(shortoff,X)
LD A,($50,X)
1
2
E6
XX
✗
A
(longoff,X)
LD A,($5000,X)
1
3
D6
MS
LS
✗
A
(Y)
LD A,(Y)
1
2
90
F6
✗
A
(shortoff,Y)
LD A,($50,Y)
1
3
90
E6
XX
✗
A
(longoff,Y)
LD A,($5000,Y)
1
4
90
D6
MS
LS
✗
A
(shortoff,SP)
LD A,($50,SP)
1
2
7B
XX
A
[shortptr.w]
LD A,[$50.w]
4
3
92
C6
XX
✗
A
[longptr.w]
LD A,[$5000.w]
4
4
72
C6
MS
LS
A
([shortptr.w],X)
LD A,([$50.w],X)
4
3
92
D6
XX
✗
A
([longptr.w],X)
LD A,([$5000.w],X)
4
4
72
D6
MS
LS
A
([shortptr.w],Y)
LD A,([$50.w],Y)
4
3
91
D6
XX
✗



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