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Datenblatt-Suchmaschine für elektronische Bauteile |
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Datenblatt-Suchmaschine für elektronische Bauteile |
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ST7MC2S4-Auto Datenblatt(PDF) 306 Page - STMicroelectronics |
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ST7MC2S4-Auto Datenblatt(HTML) 306 Page - STMicroelectronics |
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306 / 371 page  Obsolete Product(s) - Obsolete Product(s) Instruction set ST7MC1K2-Auto, ST7MC1K6-Auto, ST7MC2S4-Auto, ST7MC2S6-Auto 306/371 11.1.5 Indirect (short, long) The required data byte to do the operation is found by its memory address, located in memory (pointer). The pointer address follows the opcode. The indirect addressing mode consists of two sub- modes: ● Indirect (short) The pointer address is a byte, the pointer size is a byte, thus allowing 00 - FF addressing space, and requires 1 byte after the opcode. ● Indirect (long) The pointer address is a byte, the pointer size is a word, thus allowing 64 Kbyte addressing space, and requires 1 byte after the opcode. 11.1.6 Indirect indexed (short, long) This is a combination of indirect and short indexed addressing modes. The operand is referenced by its memory address, which is defined by the unsigned addition of an index register value (X or Y) with a pointer value located in memory. The pointer address follows the opcode. The indirect indexed addressing mode consists of two sub-modes: ● Indirect indexed (short) The pointer address is a byte, the pointer size is a byte, thus allowing 00 - 1FE addressing space, and requires 1 byte after the opcode. ● Indirect indexed (long) The pointer address is a byte, the pointer size is a word, thus allowing 64 Kbyte addressing space, and requires 1 byte after the opcode. Table 181. Instructions supporting direct, indexed, indirect and indirect indexed addressing modes Long and short instructions Function LD Load CP Compare AND, OR, XOR Logical operations ADC, ADD, SUB, SBC Arithmetic additions/substractions operations BCP Bit compare Obsolete Product(s) - Obsolete Product(s) |
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