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MC68HC908GR4MP 데이터시트(PDF) 97 Page - Freescale Semiconductor, Inc |
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MC68HC908GR4MP 데이터시트(HTML) 97 Page - Freescale Semiconductor, Inc |
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97 / 286 page ![]() MC68HC908GR8 • MC68HC908GR4 Data Sheet, Rev. 7 Freescale Semiconductor 97 Chapter 10 Central Processing Unit (CPU) The M68HC08 CPU (central processor unit) is an enhanced and fully object-code-compatible version of the M68HC05 CPU. The CPU08 Reference Manual (document order number CPU08RM/AD) contains a description of the CPU instruction set, addressing modes, and architecture. 10.1 Features Features of the CPU include: • Object code fully upward-compatible with M68HC05 Family • 16-bit stack pointer with stack manipulation instructions • 16-bit index register with x-register manipulation instructions • 8-MHz CPU internal bus frequency • 64-Kbyte program/data memory space • 16 addressing modes • Memory-to-memory data moves without using accumulator • Fast 8-bit by 8-bit multiply and 16-bit by 8-bit divide instructions • Enhanced binary-coded decimal (BCD) data handling • Modular architecture with expandable internal bus definition for extension of addressing range beyond 64 Kbytes • Low-power stop and wait modes 10.2 CPU Registers Figure 10-1 shows the five CPU registers. CPU registers are not part of the memory map. |
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