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參數資料
| 型號： | HTG1390 |
| 廠商： | Holtek Semiconductor Inc. |
| 英文描述： | 4-bit Microcontroller |
| 中文描述： | 4位微控制器 |
| 文件頁數： | 17/27頁 |
| 文件大小： | 427K |
| 代理商： | HTG1390 |
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CALL address
Machine code
Description
Subroutine call
1 1 1 1 a a a a a a a a a a a a
The program counter bits 0~11 are saved in the stack and the specified ad-
dress loaded into the program counter.
Stack
←
PC+2
PC
←
address
Operation
CLC
Machine code
Description
Operation
Clear carry flag
0 0 1 0 1 0 1 0
The carry flag is reset to zero.
CF
←
0
DAA
Machine code
Description
Decimal-Adjust accumulator
0 0 1 1 0 1 1 0
The accumulator value is adjusted to BCD (Binary Code Decimal), if the
contents of the accumulator is greater than 9 or CF (Carry flag) is one.
If ACC>9 or CF=1 then
ACC
←
ACC+6, CF
←
1
else
ACC
←
ACC, CF
←
CF
Operation
DEC A
Machine code
Description
Operation
Decrement accumulator
0 0 1 1 1 1 1 1
Data in the accumulator is decremented by one. Carry flag is not affected.
ACC
←
ACC–1
DEC Rn
Machine code
Description
Decrement register
0 0 0 1 n n n 1
Data in the working register “Rn” is decremented by one. Carry flag is not
affected.
Rn
←
Rn–1; Rn=R0,R1,R2,R3,R4, for nnn=0,1,2,3,4
Operation
DEC [R1R0]
Machine code
Description
Decrement data memory
0 0 0 0 1 1 0 1
Data in the data memory specified by the register pair “R1,R0” is decre-
mented by one. Carry flag is not affected.
M(R1,R0)
←
M(R1,R0)–1
Operation
HTG1390
Preliminary
17
17th Nov ’98
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相關代理商/技術參數 |
參數描述 |
|---|---|
| HTG1395 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:3-in-1 LCD Game |
| HTG13A0 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller |
| HTG13B0 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller |
| HTG13J0 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:4-Bit Microcontroller |
| HTG13Q0 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller |
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