HCS12 datasheet(403/452 Pages) FREESCALE

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HCS12 데이터시트(PDF) 403 Page - Freescale Semiconductor, Inc

부품명	HCS12

상세설명	HCS12 Microcontrollers

PDF	452 Pages

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제조업체	FREESCALE [Freescale Semiconductor, Inc]

홈페이지	http://www.freescale.com

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403 / 452 page

S12CPUV2 Reference Manual, Rev. 4.0

Freescale Semiconductor

403

B.1 Introduction

This appendix discusses similarities and differences between the CPU12

and the M68HC11 CPU. In general, the CPU12 is a proper superset of the

M68HC11. Significant changes have been made to improve the efficiency

and capabilities of the CPU12 without eliminating compatibility and

familiarity for the large community of M68HC11 programmers.

B.2 CPU12 Design Goals

The primary goals of the CPU12 design were:

• Absolute source code compatibility with the M68HC11

• Same programming model

• Same stacking operations

• Upgrade to 16-bit architecture

• Eliminate extra byte/extra cycle penalty for using index register Y

• Improve performance

• Improve compatibility with high-level languages

Reference Manual — S12CPUV2

Appendix B. M68HC11 to CPU12 Upgrade Path

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