MC68HC05C8A Datasheet, PDF (37/158 Pages) Motorola, Inc – Microcontrollers

Technical Data — MC68HC05C8A • MC68HCL05C8A • MC68HSC05C8A
Section 3. Central Processor Unit (CPU)
3.1 Contents
3.2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
3.3 CPU Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
3.3.1 Accumulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
3.3.2 Index Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
3.3.3 Program Counter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
3.3.4 Stack Pointer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
3.3.5 Condition Code Register . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
3.2 Introduction
This section describes the central processor unit (CPU) registers.
3.3 CPU Registers
The five CPU registers are shown in Figure 3-1 and the interrupt
stacking order in Figure 3-2.
MC68HC05C8A • MC68HCL05C8A • MC68HSC05C8A — Rev. 5.0
MOTOROLA
Central Processor Unit (CPU)
Technical Data
37