參數(shù)資料
型號: HT82K68A-L
廠商: Holtek Semiconductor Inc.
英文描述: Multimedia Keyboard Encoder 8-Bit MCU
中文描述: 多媒體鍵盤編碼器8位微控制器
文件頁數(shù): 22/39頁
文件大?。?/td> 269K
代理商: HT82K68A-L
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
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
and
If ACC.7~ACC.4+AC1 >9 or C=1
(ACC.3~ACC.0), AC1=0
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
DEC [m]
Decrement data memory
Description
Data in the specified data memory is decremented by 1.
Operation
[m]
[m] 1
Affected flag(s)
TO
PDF
OV
Z
AC
C
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
HT82K68E-L/HT82K68A-L
Rev. 1.00
22
August 9, 2007
相關(guān)PDF資料
PDF描述
HT82K68E-L Multimedia Keyboard Encoder 8-Bit MCU
HT82K68A 8-Bit High Performance Peripheral Interface IC For Multiple I/O Products and Multimedia Applications(8位高性能外圍接口集成芯片,用于多I/O口及多媒體器件)
HT82K68E 8-Bit High Performance Peripheral Interface IC For Multiple I/O Products and Multimedia Applications(8位高性能外圍接口集成芯片,用于多I/O口及多媒體器件)
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HT82K68E-L 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:Multimedia Keyboard Encoder 8-Bit MCU
HT82K68E-L_09 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:Multimedia Keyboard Encoder 8-Bit MCU
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