參數(shù)資料
型號: ST6397
廠商: 意法半導體
英文描述: 8-BIT HCMOS MCUs FOR TV FREQUENCY SYNTHESIS WITH OSD
中文描述: 8位微控制器HCMOS電視頻率合成帶OSD
文件頁數(shù): 57/68頁
文件大?。?/td> 560K
代理商: ST6397
SOFTWARE DESCRIPTION
(Continued)
InstructionSet
The ST63xx Core has a set of 40 basic instruc-
tions. When these instructions are combined with
nine addressing modes, 244 usable opcodes can
be obtained.They can be dividedinto six different
types:load/store, arithmetic/logic, conditional
branch, control instructions,jump/call, bit manipu-
lation. The following paragraphs describe the dif-
ferent types.
All the instructions within a given type are pre-
sented in individualtables.
Load & Store.
These instructions use one,two or
three bytes in relation with the addressing mode.
One operandis theAccumulator forLOAD and the
other operand isobtained fromdata memoryusing
one of the addressing modes.
ForLoad Immediateoneoperandcanbeanyofthe
256 data space bytes while the other is always
immediate data. See Table 16.
Instruction
Addressing Mode
Bytes
Cycles
Flags
Z
C
LD A, X
LD A, Y
LD A, V
LD A, W
LD X, A
LD Y, A
LD V,A
LD W, A
LD A, rr
LD rr, A
LD A, (X)
LD A, (Y)
LD (X), A
LD (Y), A
Short Direct
Short Direct
Short Direct
Short Direct
Short Direct
Short Direct
Short Direct
Short Direct
Direct
Direct
Indirect
Indirect
Indirect
Indirect
1
1
1
1
1
1
1
1
4
4
4
4
4
4
4
4
*
*
*
*
*
*
*
*
*
*
*
*
*
*
2
2
4
4
1
1
1
1
4
4
4
4
LDI A, #N
LDI rr,#N
Immediate
Immediate
2
3
4
4
*
*
*
Notes:
X,Y.IndirectRegister Pointers,V & W ShortDirect Registers
# . Immediate data (stored inROM memory)
rr.
Data space register
. Affected
* . NotAffected
Table 16. Load& Store Instructions
ST6391,92,93,95,97,99
53/64
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