HT45R2K-C Datasheet, PDF (101/105 Pages) Holtek Semiconductor Inc – Dual Slope 16K/8K/4K ASSP MCU for Body Fat Scale

HT45R2K-C/-B/-A
Dual Slope 16K/8K/4K ASSP MCU for Body Fat Scale
SUBM A,[m]
Description
Operation
Affected flag(s)
SUB A,x
Description
Operation
Affected flag(s)
SWAP [m]
Description
Operation
Affected flag(s)
SWAPA [m]
Description
Operation
Affected flag(s)
SZ [m]
Description
Operation
Affected flag(s)
SZA [m]
Description
Operation
Affected flag(s)
Subtract Data Memory from ACC with result in Data Memory
The specified Data Memory is subtracted from the contents of the Accumulator. The
result is stored in the Data Memory. Note that if the result 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.
[m] ← ACC – [m]
OV, Z, AC, C
Subtract immediate data from ACC
The immediate data specified by the code is subtracted from the contents of the
Accumulator. The result is stored in the Accumulator. Note that if the result 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.
ACC ← ACC – x
OV, Z, AC, C
Swap nibbles of Data Memory
The low-order and high-order nibbles of the specified Data Memory are
interchanged.
[m].3~[m].0↔[m].7 ~ [m].4
None
Swap nibbles of Data Memory with result in ACC
The low-order and high-order nibbles of the specified Data Memory are
interchanged. The result is stored in the Accumulator. The contents of the Data
Memory remain unchanged.
ACC.3 ~ ACC.0 ← [m].7 ~ [m].4
ACC.7 ~ ACC.4 ← [m].3 ~ [m].0
None
Skip if Data Memory is 0
If the contents of the specified Data Memory is 0, the following instruction is
skipped. As this requires the insertion of a dummy instruction while the next
instruction is fetched, it is a two cycle instruction. If the result is not 0 the program
proceeds with the following instruction.
Skip if [m] = 0
None
Skip if Data Memory is 0 with data movement to ACC
The contents of the specified Data Memory are copied to the Accumulator. If the
value is zero, the following instruction is skipped. As this requires the insertion of a
dummy instruction while the next instruction is fetched, it is a two cycle instruction.
If the result is not 0 the program proceeds with the following instruction.
ACC ← [m]
Skip if [m] = 0
None
Rev. 1.20
101
May 30, 2013