Its actual name is 8085 A. It is 8-bit microprocessor. Introduction to 8085 It was introduced in 1977.
Microprocessor 8085 which was proved to be a better version than 80 80. A low on states an opinion that the data must be written in the chosen memory location over a data bus. Microprocessor: 8085 Multiple Choice Questions and Answers:- 1) Which is the microprocessor comprises: a.Register section b.One or more ALU c.Control unit d.All of these Answer:D 2) What is the store by register a.data b.operands c.memory d.None of these Answer:A 3) Accumulator based microprocessor example are: a.Intel 8085 b.Motorola 6809 c.A. 1 (read operation) (Write operation): A low on states an opinion that the These lines or signals are most importantly used for checking the directions of data flow data must be read from the chosen memory location over the data bus.
Address Bus: The 16-bit address upper half appears on the address bus or address lines (A8 – A15). This can be done through an external latch and ALE signal from 8085. So, the lower half of an address need to be latched in “T1” to make it available at T2 and T3. But this address is also required during remaining parts of the cycle (T2 and T3) to approach a specific location in memory or input/output port. Address Latch Enable (ALE): AD0 to AD7 lines are multiplexed with the lower half of the 16-bit address (AD0 – AD7) and this appears only at the foremost part of the machine cycle (T1). For 8085 whereas it is 1.3.
If it is not ready the processor waits and is used to make the slower peripherals of microprocessor agree or occur in time.4. READY: This signal is used by the microprocessor to know whether a peripheral is set or not to send the data. I0/ , S0, and S1: The signal I0/ states an opinion that whether input/ output operation or memory operation is being done, whereas S0 and S1tells the about the machine cycle in progress. Data Bus: The eight-bit data bus (D0 – D7) is multiplexed with the 16 bit’s lower half address bus (A0 – A7).
Power Supply and Clock: It requires a power supply of 5V and CLK OUT is used as a system clock. Reset Signals: The two reset signals are RESET IN and RESET OUT.8. DMA Controllers: HOLD and HLDA are the two DMA signals.7. Serial Data Transfer: SID and SOD are used to accept and transmit the data in bit by bit format.6.
Program Status Word: The group of five flip-flops which deed as status flags and in INTEL 8085 the five status flags are: Carry (CS), Zero (Z), Sign (S), Parity (P), and Auxillary Carry (AC) and along with these there are three undefined bits which together called as program status word. General Purpose Registers: The eight-bit general purpose registers are B, C, D, E, H, L and these can be used as single eight-bit registers and in pairs as 16-bit registers like BC, DE etc., these are also called as scratch pad registers. Timing and Control Unit: The control unit is obliged for all operations and the operations occur at the same time with the help of clock signal. It also carries out the logical operations like AND, OR rotate and much more.
Instruction Register and Decoder: The processor foremost searches the op-code instruction from the memory and it is stored in a register called instruction register. Stack Pointer: Stack is a reticent part of the memory in RAM where temporary data can be saved. Well, a program counter is a unique register which saves the address of next instruction to be searched.
Address and Data Bus: 8085 microprocessor’s data bus is eight bit long and eight bits of information can be transmitted over it. Serial I/O Control: This provides two signals namely SID and SOD which are used to receive and transmit the information serially. After such execution, the program counter needs to come back in the normal condition and the occurrence of such special condition is called interrupt. Interrupt Control: Normally the processor executes the operations in an order but sometimes it need to automatically execute a collection.
I/O Read Cycle: Availed to search one byte of memory from I/O port and 3T- states are needed. Memory Write Cycle: Availed to send one byte of memory and 3T- states are needed. Memory Read Cycle: Availed to search one byte of memory and 3T- states are needed. Op-code fetches cycle: Used in executing the operations and it requires 4T OR 6T states.
8085 Microprocessor Architecture Pdf Report For
All you need to do is just click on the download link and get it. Bus idle cycle: Data bus of a microprocessor is not availed.Also See: Cryogenic Technology Seminar and PPT with PDF ReportContent of the Seminar and pdf report for 8085 microprocessorReferences Here we are giving you 8085 microprocessor Seminar and PPT with PDF report. It requires 6T or 12T states. Interrupt Acknowledge Cycle: The address of interrupt service is needed for the service of the interrupted machine.
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