3 features, 4 cpu registers, Features – Freescale Semiconductor MC68HC08KH12 User Manual
Page 52: Cpu registers

Advance Information
MC68HC(7)08KH12
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Rev. 1.1
52
Freescale Semiconductor
6.3 Features
Features of the CPU include the following:
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Full Upward, Object-Code Compatibility with M68HC05 Family
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16-Bit Stack Pointer with Stack Manipulation Instructions
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16-Bit Index Register with X-Register Manipulation Instructions
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8-MHz CPU Internal Bus Frequency
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64-Kbyte Program/Data Memory Space
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16 Addressing Modes
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Memory-to-Memory Data Moves Without Using Accumulator
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Fast 8-Bit by 8-Bit Multiply and 16-Bit by 8-Bit Divide Instructions
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Enhanced Binary-Coded Decimal (BCD) Data Handling
•
Modular Architecture with Expandable Internal Bus Definition for
Extension of Addressing Range Beyond 64 Kbytes
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Low-Power Stop and Wait Modes
6.4 CPU Registers
shows the five CPU registers. CPU registers are not part of
the memory map.