E202075_HD404889 Datasheet, PDF (167/202 Pages) Renesas Technology Corp – Low-Voltage AS Microcomputers with On-Chip LCD Circuit

[JMPL]
[BRL]
[CALL]
HD404889/HD404899/HD404878/HD404868 Series
1st word of instruction
2nd word of instruction
Opcode
p₃ p₂ p₁ p₀ d₉ d ₈ d ₇ d ₆ d ₅ d ₄ d₃ d₂ d₁ d₀
Program counter PC₁₃ PC₁₂ PC₁₁ PC₁₀ PC₉ PC₈ PC₇ PC₆ PC₅ PC₄ PC₃ PC₂ PC₁ PC₀
Direct Addressing
Instruction
[BR] Opcode b ₇ b ₆ b ₅ b ₄ b₃ b₂ b₁ b₀
Program counter PC₁₃ PC₁₂ PC₁₁ PC₁₀ PC₉ PC₈ PC₇ PC₆ PC₅ PC₄ PC₃ PC₂ PC₁ PC₀
Current Page Addressing
Instruction
[CAL]
Opcode
d₅ d ₄ d₃ d₂ d₁ d ₀
00 000 0 00
Program counter PC₁₃ PC₁₂ PC₁₁ PC₁₀ PC₉ PC₈ PC₇ PC₆ PC₅ PC₄ PC₃ PC₂ PC₁ PC₀
Zero Page Addressing
[TBR]
Instruction
Opcode
p₃ p₂ p₁ p₀
B register
Accumulator
00
B₃ B₂ B₁ B₀ A₃ A₂ A₁ A₀
Program counter PC₁₃ PC₁₂ PC₁₁ PC₁₀ PC₉ PC₈ PC₇ PC₆ PC₅ PC₄ PC₃ PC₂ PC₁ PC₀
Table Data Addressing
Figure 101 ROM Addressing Modes
165