Section 6. Central Processor Unit (Cpu); Contents; Introduction - Freescale Semiconductor MC68HC08KH12 Datasheet

Advance Information - MC68HC(7)08KH12

6.1 Contents

6.2 Introduction

MC68HC(7)08KH12 Rev. 1.1
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Freescale Semiconductor

Section 6. Central Processor Unit (CPU)

6.2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
6.3 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
6.4 CPU Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
6.4.1 Accumulator (A). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
6.4.2 Index Register (H:X) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
6.4.3 Stack Pointer (SP). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
6.4.4 Program Counter (PC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
6.4.5 Condition Code Register (CCR) . . . . . . . . . . . . . . . . . . . . . 57
6.5 Arithmetic/Logic Unit (ALU) . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
This section describes the central processor unit. The M68HC08 CPU is
an enhanced and fully object-code-compatible version of the M68HC05
CPU. The CPU08 Reference Manual (Freescale document number
CPU08RM/AD) contains a description of the CPU instruction set,
addressing modes, and architecture.
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