MC68HC705P9 Datasheet, PDF (34/156 Pages) Motorola, Inc – HCMOS Microcontroller Unit

Features
Introduction
CPU _Features
• 2.1-MHz Bus Frequency
• 8-Bit Accumulator
• 8-Bit Index Register
• 13-Bit Program Counter
• 6-Bit Stack Pointer
• Condition Code Register with Five Status Flags
• 62 Instructions
• Eight Addressing Modes
• Power-Saving Stop, Wait, and Data-Retention Modes
The central processor unit (CPU) consists of a CPU control unit, an
arithmetic/logic unit (ALU), and five CPU registers. The CPU control unit
fetches and decodes instructions. The ALU executes the instructions.
The CPU registers contain data, addresses, and status bits that reflect
the results of CPU operations.
2-hc05cpu
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CPU
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