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The 68HC08 (HC08 in short) is a broad family of 8-bit microcontrollers from Freescale Semiconductor (formerly Motorola Semiconductor). HC08's are fully code-compatible with their predecessors, the Motorola 68HC05. Like all Motorola processors that share lineage from the 6800, they use the von Neumann architecture as well as memory-mapped I/O. This family has five CPU registers that are not part of the memory. One 8-bit accumulator A, a 16-bit index register H:X, a 16-bit stack pointer SP, a 16-bit program counter PC, and an 8-bit condition code register CCR. Some instructions refer to the different bytes in the H:X index register independently. Among the HC08's there are dozens of processor families, each targeted to different embedded applications. Features and capabilities vary widely, from 8 to 64-pin processors, from USB 1.1 connectivity to LIN. A typical and general purpose device from the HC08 family of units is the microcontroller (M68HC908GP32 ). The Freescale RS08 core is a simplified, "reduced-resource" version of the HC08. The Freescale HCS08 core is the next generation of the same processors. == External links == * (HC08 Processor Families ) * (Helium Open-Source RTOS for HCS08 MCUs ) * (Digital Core Design 68HC08 - HDL IP Core ) * (Win/Linux-based freeware macro cross-assembler (ASM8) ) * (Example assembly language code written for ASM8 ) * (Educational material for the HC08 ) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Freescale 68HC08」の詳細全文を読む スポンサード リンク
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