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參數資料
型號: HT49C50
廠商: Holtek Semiconductor Inc.
元件分類: 8位微控制器
英文描述: 8-BIT MICROCONTROLLER
中文描述: 8位微控制器
文件頁數: 46/52頁
文件大小: 318K
代理商: HT49C50
SBC A,[m]
Subtract data memory and carry from the accumulator
Description
Thecontentsofthespecifieddatamemoryandthecomplementofthecarryflag
aresubtractedfromtheaccumulator,leavingtheresultintheaccumulator.
Operation
ACC
ACC+[m]+C
Affected flag(s)
TC2
TC1
TO
PD
OV
Z
AC
C
SBCM A,[m]
Subtract data memory and carry from the accumulator
Description
The contents of the specified data memory and the complement of the carry
flag are subtracted from the accumulator, leaving the result in the data
memory.
Operation
[m]
ACC+[m]+C
Affected flag(s)
TC2
TC1
TO
PD
OV
Z
AC
C
SDZ [m]
Skip if decrement data memory is zero
Description
The contents of the specified data memory are decremented by one. If the re-
sult is zero, the next instruction is skipped. If the result is zero, the following
instruction, fetched during the current instruction execution, is discarded
and a dummy cycle is replaced to get the proper instruction (two cycles). Oth-
erwise proceed with the next instruction (one cycle).
Operation
Skip if ([m] 1)=0, [m]
([m] 1)
Affected flag(s)
TC2
TC1
TO
PD
OV
Z
AC
C
SDZA [m]
Decrement data memory and place result in ACC, skip if zero
Description
The contents of the specified data memory are decremented by one. If the re-
sult is zero, the next instruction is skipped. The result is stored in the accu-
mulator but the data memory remains unchanged. If the result is zero, the
following instruction, fetched during the current instruction execution, is
discarded and a dummy cycle is replaced to get the proper instruction (two
cycles). Otherwise proceed with the next instruction (one cycle).
Operation
Skip if ([m] 1)=0, ACC
([m] 1)
Affected flag(s)
TC2
TC1
TO
PD
OV
Z
AC
C
HT49C50
46
August 18, 1999
相關PDF資料
PDF描述
HT49R50A 8-Bit High Performance High speed Microcontroller(8位、高性能、高速微控制器)
HT49R50 8-BIT MICROCONTROLLER
HT5D048 0.8m CMOS High Speed Gate Array(0.8m CMOS高速門陣列)
HT5D028 0.8m CMOS High Speed Gate Array(0.8m CMOS高速門陣列)
HT5D064 0.8m CMOS High Speed Gate Array(0.8m CMOS高速門陣列)
相關代理商/技術參數
參數描述
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