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參數(shù)資料
型號(hào): W741C260
廠商: WINBOND ELECTRONICS CORP
元件分類: 微控制器/微處理器
英文描述: 4-BIT Microcontroller(多次可編程4位的微控制器)
中文描述: 4-BIT, MROM, 4.19 MHz, MICROCONTROLLER, PQFP80
封裝: QFP-80
文件頁(yè)數(shù): 55/92頁(yè)
文件大小: 488K
代理商: W741C260
W741C260
Publication Release Date: March 1998
- 55 -
Revision A3
Instruction Set Table 2, continued
DSKZ R
Decrement R contents 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 contents 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
EN INT
Enable Interrupt function
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.
HOLD
Enter the HOLD mode
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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