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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  
(14) TM n  
Naming :  
Status :  
Test Memory Bit  
Comparison results to status  
Format :  
Operand :  
Function :  
Bit address 0  
M(X,Y,n)  
n
3
1?  
ST  
1 when M(X,Y,n)=1, ST  
0 when M(X,Y,n)=0  
<Purpose>  
A test is made to find if the selected memory bit is logic. 1  
Status is set depending on the result.  
(15) BR a  
Naming :  
Status :  
Branch on status 1  
Conditional depending on the status  
Format :  
Operand :  
Function :  
Branch address a (Addr)  
When ST =1 , PA  
When ST = 0, PC  
PB, PC  
PC + 1, ST  
a(Addr)  
1
Note : PC indicates the next address in a fixed sequence that  
is actually pseudo-random count.  
<Purpose>  
For some programs, normal sequential program execution can  
be change.  
A branch is conditionally implemented depending on the status  
of results obtained by executing the previous instruction.  
<Comment>  
• Branch instruction is always conditional depending on the  
status.  
a. If the status is reset (logic 0), a branch instruction is not  
rightly executed but the next instruction of the sequence is  
executed.  
b. If the status is set (logic 1), a branch instruction is executed  
as follows.  
• Branch is available in two types - short and long. The former  
is for addressing in the current page and the latter for  
addressing in the other page. Which type of branch to exeute  
is decided according to the PB register. To execute a long  
branch, data of the PB register should in advance be modified  
to a desired page address through the LPBI instruction.  
5-8  
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