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參數資料
型號: W741E202
廠商: WINBOND ELECTRONICS CORP
元件分類: 微控制器/微處理器
英文描述: 4-BIT FLASH MICROCONTROLLER
中文描述: 4-BIT, FLASH, 4 MHz, MICROCONTROLLER, PDSO28
封裝: 0.300 INCH, SKINNY, PLASTIC, SOP-28
文件頁數: 48/84頁
文件大小: 541K
代理商: W741E202
Preliminary W741E20X
- 48 -
Instruction Set Table 2, continued
DSKZ R
Decrement R content then skip if
ACC is zero
Machine Code:
Machine Cycle:
Operation:
Description:
Flag Affected:
0
1
0
0
1
0
0
0
0
R6
R5
R4
R3
R2
R1
R0
1
ACC, R
(R) - 1;
PC
(PC) + 2 if ACC = 0
Decrement the data memory content and load result into the ACC and the
data memory. If ACC = 0, the program counter is incremented by 2 and
produces a skip.
CF & ZF
Enable Interrupt function
EN INT
Machine Code:
Machine Cycle:
Operation:
Description:
0
1
0
1
0
0
0
0
1
1
0
0
0
0
0
0
1
Enable interrupt function
This instruction enables the interrupt function.
Enter the HOLD mode
HOLD
Machine Code:
Machine Cycle:
Operation:
Description:
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
1
Enter the HOLD mode
The following two conditions cause the HOLD mode to be released.
(1) An interrupt is accepted.
(2) The HOLD release condition specified by the HEF is met.
In HOLD mode, when an interrupt is accepted the HOLD mode will be
released and the interrupt service routine will be executed. After completing
the interrupt service routine by executing the RTN instruction, the
μ
C will
enter HOLD mode again.
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