MC68HC05K0 Datasheet, PDF (35/154 Pages) Freescale Semiconductor, Inc – HCMOS Microcontroller Unit

Freescale Semiconductor, Inc.
Technical Data — MC68HC05K0 • MC68HC05K1
Section 3. Central Processor Unit (CPU)
3.1 Contents
3.2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
3.3 CPU Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
3.3.1 Accumulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
3.3.2 Index Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
3.3.3 Stack Pointer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
3.3.4 Program Counter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
3.3.5 Condition Code Register . . . . . . . . . . . . . . . . . . . . . . . . . . .40
3.4 Arithmetic/Logic Unit (ALU) . . . . . . . . . . . . . . . . . . . . . . . . . . .41
3.2 Introduction
The central processor unit (CPU) contains five registers and an
arithmetic/logic unit (ALU).
MC68HC05K0 • MC68HC05K1 — Rev. 2.0
Central Processor Unit (CPU)
For More Information On This Product,
Go to: www.freescale.com
Technical Data