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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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HD64F2145 датащи(PDF) 68 Page - Renesas Technology Corp |
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HD64F2145 датащи(HTML) 68 Page - Renesas Technology Corp |
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68 / 829 page  Rev. 2.0, 08/02, page 28 of 788 • Two CPU operating modes Normal mode Advanced mode • Power-down state Transition to power-down state by SLEEP instruction Selectable CPU clock speed 2.1.1 Differences between H8S/2600 CPU and H8S/2000 CPU The differences between the H8S/2600 CPU and the H8S/2000 CPU are as shown below. • Register configuration The MAC register is supported only by the H8S/2600 CPU. • Basic instructions The four instructions MAC, CLRMAC, LDMAC, and STMAC are supported only by the H8S/2600 CPU. • The number of execution states of the MULXU and MULXS instructions Execution States Instruction Mnemonic H8S/2600 H8S/2000 MULXU.B Rs, Rd 3 12 MULXU MULXU.W Rs, ERd 4 20 MULXS.B Rs, Rd 4 13 MULXS MULXS.W Rs, ERd 5 21 In addition, there are differences in address space, CCR and EXR register functions, power-down modes, etc., depending on the model. 2.1.2 Differences from H8/300 CPU In comparison to the H8/300 CPU, the H8S/2000 CPU has the following enhancements. • More general registers and control registers Eight 16-bit extended registers and one 8-bit control register have been added. • Expanded address space Normal mode supports the same 64-kbyte address space as the H8/300 CPU. Advanced mode supports a maximum 16-Mbyte address space. • Enhanced addressing The addressing modes have been enhanced to make effective use of the 16-Mbyte address space. |
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