參數(shù)資料
型號: μPD789022
廠商: NEC Corp.
元件分類: 8位微控制器
英文描述: 8 Bit Single Chip Microcontrollers
中文描述: 8位單片機微控制器
文件頁數(shù): 24/52頁
文件大小: 275K
代理商: ΜPD789022
24
μ
PD789022, 789024, 789025, 789026
9.1.2
Descriptions of the operation field
: A register (8-bit accumulator)
: X register
: B register
: C register
: D register
: E register
: H register
: L register
: AX register pair (16-bit accumulator)
: BC register pair
: DE register pair
: HL register pair
: Program counter
: Stack pointer
PSW
: Program status word
CY
: Carry flag
AC
: Auxiliary carry flag
Z
: Zero flag
IE
: Interrupt request enable flag
NMIS
: Flag to indicate that a nonmaskable interrupt is being handled
()
: Contents of a memory location indicated by a parenthesized address or register name
X
H
, X
L
: Upper and lower 8 bits of a 16-bit register
: Logical product (AND)
: Logical sum (OR)
: Exclusive OR
: Inverted data
addr16 : 16-bit immediate data or label
jdisp8
: Signed 8-bit data (displacement value)
A
X
B
C
D
E
H
L
AX
BC
DE
HL
PC
SP
9.1.3
Description of the flag operation field
(blank) : No change
0
: To be cleared to 0
1
: To be set to 1
×
: To be set or cleared according to the result
R
: To be restored to the previous value
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