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GMS37140T-DT 参数 Datasheet PDF下载

GMS37140T-DT图片预览
型号: GMS37140T-DT
PDF下载: 下载PDF文件 查看货源
内容描述: [Microcontroller, 4-Bit, OTPROM, 4MHz, CMOS, PDSO24, 0.300 INCH, SOP-24]
分类和应用: 计算机
文件页数/大小: 109 页 / 782 K
品牌: HYNIX [ HYNIX SEMICONDUCTOR ]
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Chapter 5. INSTRUCTION  
(20) SM  
Naming :  
Subtract Accumulator to Memory and Status 1 Not Borrow  
Carry to status  
Status :  
Format :  
Function :  
A
M(X,Y) - A  
ST  
ST  
1(when A M(X,Y))  
0(when A > M(X,Y))  
<Comment>  
Data of the accumulator is, through a 2`s complemental  
addition, subtracted from the memory word addressed by the  
Y-register. Results are stored in the accumulator. If data of  
the accumulator is less than or equal to the memory word, the  
status is set to indicate that a borrow is not caused.  
If more than the memory word, a borrow occurs to reset the  
status to 0 .  
(21) IM  
Naming :  
Increment Memory and Status 1 on Carry  
Carry to status  
Status :  
Format :  
Function :  
A
M(X,Y) + 1  
ST  
ST  
1(when M(X,Y) 15)  
0(when M(X,Y) < 15)  
<Comment>  
Data of the memory addressed by the X and Y-register is  
fetched. Adding 1 to this word, results are stored in the  
accumulator. Carry data as results is transferred to the status.  
When the total is more than 15, the status is set. The memory  
is left unchanged.  
(22) DM  
Naming :  
Decrement Memory and Status 1 on Not Borrow  
Carry to status  
Status :  
Format :  
Function :  
A
M(X,Y) - 1  
ST  
ST  
1(when M(X,Y) 1)  
0 (when M(X,Y) = 0)  
<Comment>  
Data of the memory addressed by the X and Y-register is  
fetched, and one is subtracted from this word (addition of Fh)>  
Results are stored in the accumulator. Carry data as results is  
transferred to the status. If the data is more than or equal to  
one, the status is set to indicate that no borrow is caused. The  
memory is left unchanged.  
5-11  
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