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MC68HC08AB16AD Datasheet(PDF) 81 Page - Freescale Semiconductor, Inc

Part # MC68HC08AB16AD
Description  Microcontrollers
PDF  380 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

MC68HC08AB16AD Datasheet(HTML) 81 Page - Freescale Semiconductor, Inc

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MC68HC08AB16A — Rev. 2.1
Technical Data
Freescale Semiconductor
81
Technical Data — MC68HC08AB16A
Section 7. Central Processor Unit (CPU)
7.1 Contents
7.2
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
7.3
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
7.4
CPU Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
7.4.1
Accumulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
7.4.2
Index Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
7.4.3
Stack Pointer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
7.4.4
Program Counter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
7.4.5
Condition Code Register . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
7.5
Arithmetic/Logic Unit (ALU) . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
7.6
Low-Power Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
7.6.1
Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
7.6.2
Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
7.7
CPU During Break Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . 89
7.8
Instruction Set Summary
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
7.9
Opcode Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
7.2 Introduction
The M68HC08 CPU (central processor unit) is an enhanced and fully
object-code-compatible version of the M68HC05 CPU. The CPU08
Reference Manual (Freescale document order number CPU08RM/AD)
contains a description of the CPU instruction set, addressing modes,
and architecture.



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