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Microcontrollers: Architecture, Programming, Interfacing and System Design, 2nd Edition by Raj Kamal

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7

System Design: Peripherals and Interfacing

Chapter Outline

  • Understand important peripheral devices (8251,8255,8257,8259, ADC 0804, DAC 808) for the microprocessors and MCU-based system design
  • Learn interfacing of peripherals
  • Learn I2C bus for interfacing the systems

A microprocessor needs the external peripheral devices. The peripheral devices provide the parallel ports, serial ports, interrupt handling, direct memory access, ADC and DAC when they interface the microprocessor. An MCU possesses the many of the features of peripheral devices.

However, a particular MCU version in the family may not possess analog-to-digital converter, digital-to-analog converter, modem or DMA (direct memory access) or required device or control or interface ...

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