Microprocessor – 8085 Architecture 1 8-bit data bus 2 16-bit address bus, which can address upto 64KB 3 A 16-bit program counter 4 A 16-bit stack pointer 5 Six 8-bit registers arranged in pairs: BC, DE, HL 6 Requires +5V supply to operate at 3.2 MHZ single phase clock
What is the configuration of 808085?
8085 is pronounced as “eighty-eighty-five” microprocessor. It is an 8-bit microprocessor designed by Intel in 1977 using NMOS technology. It has the following configuration −. 8-bit data bus; 16-bit address bus, which can address upto 64KB; A 16-bit program counter; A 16-bit stack pointer; Six 8-bit registers arranged in pairs: BC, DE, HL
How many general purpose registers are there in 8085 processor?
There are 6 general purpose registers in 8085 processor, i.e. B, C, D, E, H & L. Each register can hold 8-bit data. These registers can work in pair to hold 16-bit data and their pairing combination is like B-C, D-E & H-L.
What is the difference between bus and address bus in 8085?
It is bidirectional, whereas address bus carries the location to where it should be stored and it is unidirectional. It is used to transfer the data & Address I/O devices. We have tried to depict the architecture of 8085 with this following image −
What is the size of Register in 8086 microprocessor?
The microprocessors 8086, 8088 and 80286 are 16-bit machines. The size of registers in microprocessors 80386 and 80586 has extended to 32-bits. Note: In modern 64-bit Intel processors, the registers are of 64-bits size which are RAX, RBX, RCX, and RDX. The 32-bit registers are only available in 80386 architecture and above.
What is the second main unit of 8086 microcontroller?
As metioned earlier, the second main unit of 8086 microprocssor is a execution unit which consists of following main components: It has a 16-bit wide data bus and internal registers of 16 bits size. Thus, it can access and work on 16-bits data at a time.
What is the history of microprocessor architecture?
In 1978, Intel introduced the x86 instruction set architecture (ISA) which was the successor of the 8088 microprocessors. It was the first microprocessor-based computing architecture developed in the IA family. After that, Intel developed other microprocessors like 80186, 80286, 80386, Core 2 and Pentium series, etc.
