UPD78F0886GA(A)-GAM-AX NEC, UPD78F0886GA(A)-GAM-AX Datasheet - Page 84

• Manufacturer Part Number: UPD78F0886GA(A)-GAM-AX
• Description: 8BIT MCU, 60K FLASH, 3KB RAM, CAN
• Manufacturer: NEC

Specifications of UPD78F0886GA(A)-GAM-AX

• Controller Family/series: UPD78F
• No. Of I/o's: 41
• Ram Memory Size: 3KB
• Cpu Speed: 20MHz
• No. Of Timers: 8
• No. Of Pwm Channels: 6
• Digital Ic Case Style: LQFP
• Core Size: 8bit
• Program Memory Size: 60KB
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

84
[Instruction format]
[Operation]
[Operand]
[Flag]
[Description]
ADJBS
None
• The A register, CY flag and AC flag are decimally adjusted from their contents. This instruction carries out
• If the adjustment result shows that the A register contents are 0, the Z flag is set (1). In all other cases,
an operation having meaning only when the BCD (binary coded decimal) data is subtracted and the
subtraction result is stored in the A register (in all other cases, the instruction carries out an operation having
no meaning).
See the table below for the adjustment method.
the Z flag is cleared (0).
Z
×
AC = 0
AC = 1
AC
×
Condition
ADJBS
Decimal Adjust Accumulator for Subtraction
CY
×
CHAPTER 5 EXPLANATION OF INSTRUCTIONS
CY = 0
CY = 1
CY = 0
CY = 1
User's Manual U12326EJ4V0UM
A ← A, CY ← 0, AC ← 0
A ← A–01100000B, CY ← 1, AC ← 0
A ← A–00000110B, CY ← 0, AC ← 0
A ← A–01100110B, CY ← 1, AC ← 0
Decimal Adjustment of Subtraction Result
Decimal Adjust Register for Subtraction
Operation