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HT48R54A Datasheet(PDF) 31 Page - Holtek Semiconductor Inc

Part # HT48R54A
Description  44-pin QFP/LQFP
Download  42 Pages
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Manufacturer  HOLTEK [Holtek Semiconductor Inc]
Direct Link  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT48R54A Datasheet(HTML) 31 Page - Holtek Semiconductor Inc

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HT48R54A
Rev. 1.30
31
2014-04-03
CPLA
[m]
Complement data memory
说明:
将指定数据存储器中的每一位取逻辑反,相当于从 1 变 0 或从 0 变 1,结果被存放回累
加器且数据寄存器的内容保持不变。
运算过程:
ACC
[ m ]
影响标志位:
Z
DAA
[m]
Decimal-Adjust accumulator for addition
说明:
将累加器中的内容转换为 BCD(二进制转成十进制)码。如果低四位的值大于“9”或
AC=1,那么 BCD 调整就执行对原值加“6”
,否则原值保持不变;如果高四位的值大于
“9”或 C=1,那么 BCD 调整就执行对原值加“6”。BCD 转换实质上是根据累加器和
标志位执行 00H,06H,60H 或 66H 的加法运算,结果存放到数据存储器。只有进位标
志位 C 受影响,用来指示原始 BCD 的和是否大于 100,并可以进行双精度十进制数的
加法运算。
操作:
[m]
ACC+00H 或 [m]
ACC+06H
[m]
ACC+60H 或 [m]
ACC+66H
影响标志位:
C
DEC
[m]
Decrement data memory
说明:
将指定数据存储器的内容减 1。
运算过程:
[m]
[m]-1
影响标志位:
Z
DECA
[m]
Decrement data memory and place result in the accumulator
说明:
将指定数据存储器的内容减 1,把结果存放回累加器并保持指定数据存储器的内容不变。
运算过程:
ACC
[m]-1
影响标志位:
Z
HALT
Enter power down mode
说明:
此指令终止程序执行并关掉系统时钟,RAM 和寄存器的内容保持原状态,WDT 计数器
和分频器被清“0”,暂停标志位 PDF 被置位 1,WDT 溢出标志位 TO 被清 0。
运算过程:
PDF
1
TO
0
影响标志位:
TO、PDF
INC
[m]
Increment data memory
说明:
将指定数据存储器的内容加 1。
运算过程:
[m]
[m]+1
影响标志位:
Z
INCA
[m]
Increment data memory and place result in the accumulator
说明:
将指定数据存储器的内容加 1,结果存放回累加器并保持指定的数据存储器内容不变。
运算过程:
ACC
[m]+1
影响标志位:
Z


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