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HT47C20L bảng dữ liệu(PDF) 49 Page - Holtek Semiconductor Inc

tên linh kiện HT47C20L
Giải thích chi tiết về linh kiện  8-Bit Microcontroller
PDF  55 Pages
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nhà sản xuất  HOLTEK [Holtek Semiconductor Inc]
Trang chủ  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT47C20L bảng dữ liệu(HTML) 49 Page - Holtek Semiconductor Inc

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SBC A,[m]
Subtract data memory and carry from accumulator
Description
The contents of the specified data memory and the complement of the
carry flag are together subtracted from the accumulator, leaving the re-
sult in the accumulator.
Operation
ACC ¬ ACC+[m]+C
Affected flag(s)
TC2 TC1
TO
PD
OV
Z
AC
C
¾
¾
¾
¾
ÖÖÖÖ
SBCM A,[m]
Subtract data memory and carry from accumulator
Description
The contents of the specified data memory and the complement of the
carry flag are together subtracted from the accumulator, leaving the re-
sult in the data memory.
Operation
[m] ¬ ACC+[m]+C
Affected flag(s)
TC2 TC1
TO
PD
OV
Z
AC
C
¾¾
¾
c
ÖÖÖÖ
SDZ [m]
Skip if decrement data memory is zero
Description
The contents of the specified data memory are decremented by one. If the
result is zero, the next instruction is skipped. If the result is zero, the fol-
lowing instruction, fetched during the current instruction execution, is
discarded and a dummy cycle replaced to get the proper instruction. This
makes a 2-cycle instruction. Otherwise proceed with the next instruc-
tion.
Operation
Skip if ([m]-1)=0, [m] ¬ ([m]-1)
Affected flag(s)
TC2 TC1
TO
PD
OV
Z
AC
C
¾
¾
¾¾¾¾¾¾
HT47C20L
49
January 18, 2000



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