s908qc16g0cdte Freescale Semiconductor, Inc, s908qc16g0cdte Datasheet - Page 59
s908qc16g0cdte
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s908qc16g0cdte
Description
M68hc08 Family Of 8-bit Microcontroller Units Mcus
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.S908QC16G0CDTE.pdf
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Chapter 7
Central Processor Unit (CPU)
7.1 Introduction
The M68HC08 CPU (central processor unit) is an enhanced and fully object-code-compatible version of
the M68HC05 CPU. The CPU08 Reference Manual (document order number CPU08RM/AD) contains a
description of the CPU instruction set, addressing modes, and architecture.
7.2 Features
Features of the CPU include:
7.3 CPU Registers
Figure 7-1
Freescale Semiconductor
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Object code fully upward-compatible with M68HC05 Family
16-bit stack pointer with stack manipulation instructions
16-bit index register with x-register manipulation instructions
8-MHz CPU internal bus frequency
64-Kbyte program/data memory space
16 addressing modes
Memory-to-memory data moves without using accumulator
Fast 8-bit by 8-bit multiply and 16-bit by 8-bit divide instructions
Enhanced binary-coded decimal (BCD) data handling
Modular architecture with expandable internal bus definition for extension of addressing range
beyond 64 Kbytes
Low-power stop and wait modes
shows the five CPU registers. CPU registers are not part of the memory map.
MC68HC08QY/QT Family Data Sheet, Rev. 2
59
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