HT46R068B/HT46R069B
Enhanced A/D Type 8-bit OTP MCU
SUBM A,[m]
Sꢀbtꢁact Data Memoꢁꢂ fꢁom ACC with ꢁesꢀlt in Data Memoꢁꢂ
Descꢁiption
The specified Data Memory is subtracted from the contents of the Accumulator.
The ꢁesꢀlt is stoꢁed in the Data Memoꢁꢂ. Note that if the ꢁesꢀlt of sꢀbtꢁaction is
negative, the C flag will be cleared to 0, otherwise if the result is positive or zero,
the C flag will be set to 1.
←
Opeꢁation
[m]
–
ACC [m]
Affected flag(s)
OVꢅ Zꢅ ACꢅ C
SUB A,x
Sꢀbtꢁact immediate data fꢁom ACC
Descꢁiption
The immediate data specified by the code is subtracted from the contents of the
Accꢀmꢀlatoꢁ. The ꢁesꢀlt is stoꢁed in the Accꢀmꢀlatoꢁ. Note that if the ꢁesꢀlt of
subtraction is negative, the C flag will be cleared to 0, otherwise if the result is
positive or zero, the C flag will be set to 1.
←
Opeꢁation
ACC
–
ACC x
Affected flag(s)
OVꢅ Zꢅ ACꢅ C
SWAP [m]
Swap nibbles of Data Memoꢁꢂ
Descꢁiption
The low-oꢁdeꢁ and high-oꢁdeꢁ nibbles of the specified Data Memoꢁꢂ aꢁe
inteꢁchanged.
Opeꢁation
[m].3~[m].0↔[m].7 ~ [m].4
None
Affected flag(s)
SWAPA [m]
Swap nibbles of Data Memoꢁꢂ with ꢁesꢀlt in ACC
Descꢁiption
The low-oꢁdeꢁ and high-oꢁdeꢁ nibbles of the specified Data Memoꢁꢂ aꢁe
inteꢁchanged. The ꢁesꢀlt is stoꢁed in the Accꢀmꢀlatoꢁ. The contents of the Data
Memoꢁꢂ ꢁemain ꢀnchanged.
←
←
ACC.3 ~ ACC.0
ACC.7 ~ ACC.4
None
[m].7 ~ [m].4
[m].3 ~ [m].0
Opeꢁation
Affected flag(s)
SZ [m]
Skip if Data Memoꢁꢂ is 0
Descꢁiption
If the contents of the specified Data Memoꢁꢂ is 0ꢅ the following instꢁꢀction is
skipped. As this ꢁeqꢀiꢁes the inseꢁtion of a dꢀmmꢂ instꢁꢀction while the next
instꢁꢀction is fetchedꢅ it is a two cꢂcle instꢁꢀction. If the ꢁesꢀlt is not 0 the pꢁogꢁam
pꢁoceeds with the following instꢁꢀction.
Opeꢁation
Skip if [m] = 0
None
Affected flag(s)
SZA [m]
Skip if Data Memoꢁꢂ is 0 with data movement to ACC
Descꢁiption
The contents of the specified Data Memory are copied to the Accumulator. If the
valꢀe is zeꢁoꢅ the following instꢁꢀction is skipped. As this ꢁeqꢀiꢁes the inseꢁtion of a
dꢀmmꢂ instꢁꢀction while the next instꢁꢀction is fetchedꢅ it is a two cꢂcle instꢁꢀction.
If the ꢁesꢀlt is not 0 the pꢁogꢁam pꢁoceeds with the following instꢁꢀction.
←
[m]
Opeꢁation
ACC
Skip if [m] = 0
None
Affected flag(s)
Rev. 1.00
119
�anꢀaꢁꢂ ꢃꢄꢅ ꢃ011
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
