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HT46R47-H(18SOP) 参数 Datasheet PDF下载

HT46R47-H(18SOP)图片预览
型号: HT46R47-H(18SOP)
PDF下载: 下载PDF文件 查看货源
内容描述: [Microcontroller, 8-Bit, UVPROM, 8MHz, CMOS, PDSO18]
分类和应用: 可编程只读存储器LTE微控制器光电二极管
文件页数/大小: 42 页 / 296 K
品牌: HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
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HT46R47-H  
CPLA [m]  
Complement data memory and place result in the accumulator  
Description  
Each bit of the specified data memory is logically complemented (1¢s complement). Bits  
which previously contained a 1 are changed to 0 and vice-versa. The complemented result  
is stored in the accumulator and the contents of the data memory remain unchanged.  
Operation  
ACC ¬ [m]  
Affected flag(s)  
TO  
PDF  
OV  
Z
AC  
C
¾
¾
¾
Ö
¾
¾
DAA [m]  
Decimal-Adjust accumulator for addition  
Description  
The accumulator value is adjusted to the BCD (Binary Coded Decimal) code. The accumu-  
lator is divided into two nibbles. Each nibble is adjusted to the BCD code and an internal  
carry (AC1) will be done if the low nibble of the accumulator is greater than 9. The BCD ad-  
justment is done by adding 6 to the original value if the original value is greater than 9 or a  
carry (AC or C) is set; otherwise the original value remains unchanged. The result is stored  
in the data memory and only the carry flag (C) may be affected.  
Operation  
If ACC.3~ACC.0 >9 or AC=1  
then [m].3~[m].0 ¬ (ACC.3~ACC.0)+6, AC1=AC  
else [m].3~[m].0 ¬ (ACC.3~ACC.0), AC1=0  
and  
If ACC.7~ACC.4+AC1 >9 or C=1  
then [m].7~[m].4 ¬ ACC.7~ACC.4+6+AC1,C=1  
else [m].7~[m].4 ¬ ACC.7~ACC.4+AC1,C=C  
Affected flag(s)  
TO  
PDF  
OV  
Z
AC  
C
¾
¾
¾
¾
¾
Ö
DEC [m]  
Decrement data memory  
Description  
Operation  
Data in the specified data memory is decremented by 1.  
[m] ¬ [m]-1  
Affected flag(s)  
TO  
PDF  
OV  
Z
AC  
C
¾
¾
¾
Ö
¾
¾
DECA [m]  
Decrement data memory and place result in the accumulator  
Description  
Data in the specified data memory is decremented by 1, leaving the result in the accumula-  
tor. The contents of the data memory remain unchanged.  
Operation  
ACC ¬ [m]-1  
Affected flag(s)  
TO  
PDF  
OV  
Z
AC  
C
¾
¾
¾
Ö
¾
¾
Rev. 1.30  
28  
March 1, 2006  
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