參數(shù)資料
型號: HT47C20
廠商: Holtek Semiconductor Inc.
元件分類: 8位微控制器
英文描述: 8-BIT MICROCONTROLLER
中文描述: 8位微控制器
文件頁數(shù): 47/56頁
文件大小: 352K
代理商: HT47C20
RET A,x
Return and place immediate data in accumulator
Description
The program counter is restored from the stack and the accumulator
loaded with the specified 8-bit immediate data.
Operation
PC
ACC
Stack
x
Affected flag(s)
TC2
TC1
TO
PD
OV
Z
AC
C
RETI
Return from interrupt
Description
The program counter is restored from the stack, and interrupts enabled
by setting the EMI bit. EMI is the enable master (global) interrupt bit
(bit 0; register INTC).
Operation
PC
EMI
Stack
1
Affected flag(s)
TC2
TC1
TO
PD
OV
Z
AC
C
RL [m]
Rotate data memory left
Description
The contents of the specified data memory is rotated left one bit with bit
7 rotated into bit 0.
Operation
[m].(i+1)
[m].0
[m].i; [m].i:bit i of the data memory (i=0-6)
[m].7
Affected flag(s)
TC2
TC1
TO
PD
OV
Z
AC
C
RLA [m]
Rotate data memory left and place result in accumulator
Description
Data in the specified data memory is rotated left one bit with bit 7 ro-
tated into bit 0, leaving the rotated result in the accumulator. The con-
tents of the data memory remain unchanged.
Operation
ACC.(i+1)
ACC.0
[m].i; [m].i:bit i of the data memory (i=0-6)
[m].7
Affected flag(s)
TC2
TC1
TO
PD
OV
Z
AC
C
HT47C20
47
January 18, 2000
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