参数资料
型号: ST62P09CM1/XXX
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO20
封装: 0.300 INCH, PLASTIC, SOP-20
文件页数: 58/104页
文件大小: 1487K
代理商: ST62P09CM1/XXX
ST6208C/ST6209C/ST6210C/ST6220C
57/104
9.3 INSTRUCTION SET
The ST6 offers a set of 40 basic instructions
which, when combined with nine addressing
modes, yield 244 usable opcodes. They can be di-
vided into six different types: load/store, arithme-
tic/logic, conditional branch, control instructions,
jump/call, and bit manipulation. The following par-
agraphs describe the different types.
All the instructions belonging to a given type are
presented in individual tables.
Load & Store. These instructions use one, two or
three bytes depending on the addressing mode.
For LOAD, one operand is the Accumulator and
the other operand is obtained from data memory
using one of the addressing modes.
For Load Immediate, one operand can be any of
the 256 data space bytes while the other is always
immediate data.
Table 17. Load & Store Instructions
Legend:
X, Y
Index Registers,
V, W Short Direct Registers
#
Immediate data (stored in ROM memory)
rr
Data space register
Affected
*
Not Affected
Instruction
Addressing Mode
Bytes
Cycles
Flags
ZC
LD A, X
Short Direct
1
4
*
LD A, Y
Short Direct
1
4
*
LD A, V
Short Direct
1
4
*
LD A, W
Short Direct
1
4
*
LD X, A
Short Direct
1
4
*
LD Y, A
Short Direct
1
4
*
LD V, A
Short Direct
1
4
*
LD W, A
Short Direct
1
4
*
LD A, rr
Direct
2
4
*
LD rr, A
Direct
2
4
*
LD A, (X)
Indirect
1
4
*
LD A, (Y)
Indirect
1
4
*
LD (X), A
Indirect
1
4
*
LD (Y), A
Indirect
1
4
*
LDI A, #N
Immediate
2
4
*
LDI rr, #N
Immediate
3
4
*
1
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