HD404669 Datasheet, PDF (117/142 Pages) Hitachi Semiconductor – Low-Voltage AS Microcomputers with On-Chip DTMF Generation Circuit

HD404669 Series
Instruction Set
The MCU has 101 instructions, classified into the following 10 groups:
• Immediate instructions
• Register-to-register instructions
• RAM addressing instructions
• RAM register instructions
• Arithmetic instructions
• Compare instructions
• RAM bit manipulation instructions
• ROM addressing instructions
• Input/output instructions
• Control instructions
The functions of these instructions are listed in tables 25 to 34, and an opcode map is shown in table 35.
Table 25 Immediate Instructions
Operation
Mnemonic
Load A from immediate LAI i
Load B from immediate LBI i
Load memory from
immediate
LMID i,d
Load memory from
LMIIY i
immediate, increment Y
Operation Code
1 0 0 0 1 1 i₃ i₂ i₁ i₀
1 0 0 0 0 0 i₃ i₂ i₁ i₀
0 1 1 0 1 0 i₃ i₂ i₁ i₀
d₉ d₈ d₇ d₆ d₅ d₄ d₃ d₂ d₁ d₀
1 0 1 0 0 1 i₃ i₂ i₁ i₀
Function
i→A
i→B
i→M
Status
Words/
Cycles
1/1
1/1
2/2
i → M, Y + 1 → Y NZ
1/1
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