M68HC05 Family — Understanding Small Microcontrollers

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Freescale Semiconductor, Inc... List of Tables Freescale Semiconductor, Inc. M68HC05 Family — Understanding Small Microcontrollers — Rev. 2.0 16 List of Tables For More Information On This Product, Go to: www.freescale.com MOTOROLA
Freescale Semiconductor, Inc... Contents Introduction Freescale Semiconductor, Inc. What is a Microcontroller? Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 Overall View of a Computer System . . . . . . . . . . . . . . . . . . . . . . . . . .18 Computer System Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19 Computer System Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 Central Processor Unit (CPU) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21 Computer Memory. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21 Computer Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23 The Microcontroller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23 Review. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25 The Parts of Any Computer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25 Kinds of Computers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25 This chapter sets the groundwork for a detailed exploration of the inner workings of a small microcontroller. We will see that the microcontroller is one of the most basic forms of computer system. Although much smaller than its cousins — personal computers and mainframe computers — microcontrollers are built from the same basic elements. In the simplest sense, computers produce a specific pattern of outputs based on current inputs and the instructions in a computer program. M68HC05 Family — Understanding Small Microcontrollers — Rev. 2.0 MOTOROLA What is a Microcontroller? For More Information On This Product, Go to: www.freescale.com 17
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M68HC05 Family — Understanding Small Microcontrollers

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