參數(shù)資料
型號: UPD754264GS
廠商: NEC Corp.
英文描述: 4-BIT SINGLE-CHIP MICROCONTROLLERS
中文描述: 4位單晶片微控制器
文件頁數(shù): 41/68頁
文件大?。?/td> 318K
代理商: UPD754264GS
41
μ
PD754264
Instruction
group
Number
of bytes
Number
of machine
cycles
Addressing
area
Mnemonic
Operand
Operation
Skip condition
Increment
and
Decrement
instructions
INCS
reg
1
1+S
reg
reg+1
reg=0
rp1
1
1+S
rp1
rp1+1
rp1=00H
@HL
2
2+S
(HL)
(HL)+1
*1
(HL)=0
mem
2
2+S
(mem)
(mem)+1
*3
(mem)=0
DECS
reg
1
1+S
reg
reg–1
reg=FH
rp'
2
2+S
rp'
rp'–1
rp'=FFH
Comparison
instruction
SKE
reg, #n4
2
2+S
Skip if reg = n4
reg=n4
@HL, #n4
1
2+S
Skip if (HL) = n4
*1
(HL) = n4
A, @HL
2
1+S
Skip if A = (HL)
*1
A = (HL)
XA, @HL
2
2+S
Skip if XA = (HL)
*1
XA = (HL)
A, reg
2
2+S
Skip if A = reg
A=reg
XA, rp'
2
2+S
Skip if XA = rp'
XA=rp'
Carry flag
manipulation
instruction
SET1
CY
1
1
CY
1
CLR1
CY
1
1
CY
0
SKT
CY
1
1+S
Skip if CY = 1
CY=1
NOT1
CY
1
1
CY
CY
Memory bit
manipulation
instructions
SET1
mem.bit
2
2
(mem.bit)
1
*3
fmem.bit
2
2
(fmem.bit)
1
*4
pmem.@L
2
2
(pmem
7–2
+L
3–2
.bit(L
1–0
))
1
*5
@H+mem.bit
2
2
(H+mem
3–0
.bit)
1
*1
CLR1
mem.bit
2
2
(mem.bit)
0
*3
fmem.bit
2
2
(fmem.bit)
0
*4
pmem.@L
2
2
(pmem
7–2
+L
3–2
.bit(L
1–0
))
0
*5
@H+mem.bit
2
2
(H+mem
3–0
.bit)
0
*1
SKT
mem.bit
2
2+S
Skip if (mem.bit)=1
*3
(mem.bit)=1
fmem.bit
2
2+S
Skip if (fmem.bit)=1
*4
(fmem.bit)=1
pmem.@L
2
2+S
Skip if (pmem
7–2
+L
3–2
.bit(L
1–0
))=1
*5
(pmem.@L)=1
@H+mem.bit
2
2+S
Skip if (H+mem
3–0
.bit)=1
*1
(@H+mem.bit)=1
SKF
mem.bit
2
2+S
Skip if (mem.bit)=0
*3
(mem.bit)=0
fmem.bit
2
2+S
Skip if (fmem.bit)=0
*4
(fmem.bit)=0
pmem.@L
2
2+S
Skip if (pmem
7–2
+L
3–2
.bit(L
1–0
))=0
*5
(pmem.@L)=0
@H+mem.bit
2
2+S
Skip if (H+mem
3–0
.bit)=0
*1
(@H+mem.bit)=0
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