8085 Architecture

8085 Architecture:

8085 Microprocessor Architecture : Fig. 1.1 shows the 8085 Microprocessor Architecture. It consists of various functional blocks as listed below : Registers Arithmetic and Logic Unit Instruction decoder and machine cycle encoder Address buffer Address/Data buffer Incrementer/Decrementer Address Latch Interrupt control Serial I/O control Timing and control circuitry. Registers It has eight addressable 8-bit registers : A, B, C, D, E, H, L, …


8085 Microprocessor Features : The features of 8085 Microprocessor include : 1.It is an 8-bit microprocessor i.e. it can accept, process, or provide 8-bit data simultaneously. 2.It operates on a single +5V power supply connected at Vcc; power supply ground is connected to Vss. 3.It operates on clock cycle with 50% duty cycle. 4.It has on …


8085 Pin Diagram : Fig. 1.3 (a) and (b) shows 8085 Pin Diagram and functional pin diagram of 8085 microprocessor respectively. The signals of 8085 Pin Diagram can be classified into seven groups according to their functions. Power supply and frequency signals. Data bus and address bus Control …


Digital Recording Definition : Digital Recording Definition- Digital magnetic tapes are often used as storage devices in digital data processing applications. Digital tape units are of two types, incremental and synchronous. Incremental digital recorders are commanded to step ahead (increment) for each digital character to be recorded. Input data may be at a …


Instruction Cycle : Relation between Instruction Cycle, Machine Cycle and T-State: During normal operation, the microprocessor sequentially fetches, decodes and executes one instruction after another until a halt instruction (HLT) is executed. The fetching, decoding and execution of a single instruction constitutes an instruction cycle, which consists of one to five read or write …


Machine Cycle in 8085 : The seven Machine Cycle in 8085 are : Opcode Fetch Memory Read Memory Write I/O Read I/O Write Interrupt Acknowledge Bus Idle 1. Opcode Fetch Machine Cycle 8085: The first Machine Cycle in 8085 of every instruction is opcode fetch cycle in which the 8085 finds the nature of the instruction to be executed. In this …


8085 

8085 Architecture Microprocessor

Updated: April 29, 2020 — 4:43 pm