Microprocessors and Microcontrollers BE(EE/EEE) 5th Upcoming topics

Unit-I: Microprocessor 8086Introduction to 16-bit 8086 microprocessors, architecture of 8086, Pin Configuration, interrupts, minimum mode and maximum mode, timing diagram, Memory interfacing. Comparative study of Salient features of 8086, 80286 and 80386.

Unit-II: Microprocessor 8086 programming Instruction set of 8086, Addressing mode, Assembler directives & operations, assembly and machine language programming, subroutine call and returns, Concept of stack, Stack structure of 8086, timings and delays

Unit-III: Input-Output interfacing: Memory Mapped I/O and Peripherals I/O. PPI 8255 Architecture and modes of operation, interfacing to 16-bit microprocessor and programming, DMA controller (8257) Architecture, Programmable interval timer 8254, USART 8251, 8-bit ADC/DAC interfacing and programming.

Unit-IV: Microcontroller 8051Intel family of 8 bit microcontrollers, Architecture of 8051, Pin description, I/O configuration, interrupts; Interrupt structure and interrupt priorities, Port structure and operation, accessing internal& external memories and different mode of operations, Memory organization, addressing mode, instruction set of 8051 and programming

Unit-V: 8051 Interfacing, Applications and serial communication8051 interfacing to ADC and DAC, Stepper motor interfacing, Tuner/ counter functions, 8051 based thyristor firing circuit, 8051 connections o tRS-232, 8051 Serial communication, Serial communication modes, Serial communication programming, Serial port programming in C

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Microprocessor - 8086 Instruction Sets

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8086 pins configuration

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8086 pins configuration The description of the pins of 8086 is as follows: AD0-AD15 (Address Data Bus):  Bidirectional address/data lines. These are low order address bus. They are multiplexed with data. When these lines are used to transmit memory address, the symbol A is used instead of AD, for example, A0- A15. A16 - A19 (Output):  High order address lines. These are multiplexed with status signals. A16/S3, A17/S4:  A16 and A17 are multiplexed with segment identifier signals S3 and S4. A18/S5:  A18 is multiplexed with interrupt status S5. A19/S6:  A19 is multiplexed with status signal S6. BHE /S7 (Output):  Bus High Enable/Status. During T1, it is low. It enables the data onto the most significant half of data bus, D8-D15. 8-bit device connected to upper half of the data bus use BHE signal. It is multiplexed with status signal S7. S7 signal is available during T3 and T4. RD  (Read):  For read operation. It is an output signal. It is active when LOW. Ready (Input):  The addressed mem
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