參數(shù)資料
型號: UPD7554AG
廠商: NEC Corp.
英文描述: 4-BIT SINGLE-CHIP MICROCOMPUTER
中文描述: 4位單片機
文件頁數(shù): 30/64頁
文件大?。?/td> 991K
代理商: UPD7554AG
30
μ
PD7554A, 7554A(A)
5.
μ
PD7554A INSTRUCTION SET
(1)
Operand representation and description
addr
10-bit immediate data or label
caddr
caddr1
10-bit immediate data or label
100H to 107H, 140H to 147H, 180H to 187H,
IC0H to IC7H immediate data or label
mem
6-bit immediate data or label
n5
n4
n2
5-bit immediate data or label
4-bit immediate data or label
2-bit immediate data or label
bit
2-bit immediate data or label
pr
HL-, HL+, HL
(2)
Mnemonics for operation descriptions
A
:
Accumulator
H
:
H register
L
:
L register
HL
:
Pair register HL
pr
:
Pair register HL-, HL+, or HL
SP
:
Stack pointer
PC
:
Program counter
C
:
Carry flag
PSW
:
Program status word
SIO
:
Shift register
CT
:
Count register
In
:
Immediate data to n5, n4 or n2
Pn
:
Immediate data to addr, caddr, or caddr1
Bn
:
Immediate data to bit
Dn
:
Immediate data to mem
Rn
:
Immediate data to pr
(
××
)
:
Content addressed by
××
×
H
:
Hexadecimal data
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