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HT46R23 Datasheet(PDF) 39 Page - Holtek Semiconductor Inc

No. de pieza HT46R23
Descripción Electrónicos  8-Bit OTP Microcontroller
PDF  42 Pages
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Fabricante Electrónico  HOLTEK [Holtek Semiconductor Inc]
Página de inicio  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT46R23 Datasheet(HTML) 39 Page - Holtek Semiconductor Inc

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SUB A,[m]
Subtract data memory from the accumulator.
Description
The specified data memory is subtracted from the contents of the accumulator, leaving the re-
sult in the accumulator.
Operation
ACC ¬ ACC+[m]+1
Affected flag(s)
TC2
TC1
TO
PD
OV
Z
AC
C
¾
¾
¾
¾
ÖÖÖÖ
SUBM A,[m]
Subtract data memory from the accumulator.
Description
The specified data memory is subtracted from the contents of the accumulator, leaving the re-
sult in the data memory.
Operation
[m] ¬ ACC+[m]+1
Affected flag(s)
TC2
TC1
TO
PD
OV
Z
AC
C
¾
¾
¾
¾
ÖÖÖÖ
SUB A,x
Subtract immediate data from the accumulator.
Description
The immediate data specified by the code is subtracted from the contents of the accumulator,
leaving the result in the accumulator.
Operation
ACC ¬ ACC+x+1
Affected flag(s)
TC2
TC1
TO
PD
OV
Z
AC
C
¾
¾
¾
¾
ÖÖÖÖ
SWAP [m]
Swap nibbles within the data memory.
Description
The low-order and high-order nibbles of the specified data memory (one of the data memo-
ries) are interchanged.
Operation
[m].3~[m].0 « [m].7~[m].4
Affected flag(s)
TC2
TC1
TO
PD
OV
Z
AC
C
¾
¾
¾¾¾¾¾¾
SWAPA [m]
Swap data memory and place result in the accumulator.
Description
The low-order and high-order nibbles of the specified data memory are interchanged, writing
the result to the accumulator. The contents of the data memory remain unchanged.
Operation
ACC.3~ACC.0 ¬ [m].7~[m].4
ACC.7~ACC.4 ¬ [m].3~[m].0
Affected flag(s)
TC2
TC1
TO
PD
OV
Z
AC
C
¾
¾
¾¾¾¾¾¾
HT46R23
Rev. 1.30
39
August 17, 2001



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