8085 features and bus structure of 8085 microprocessor

*085 microprocessor ar chitecture

1. Microprocessor and Microcontroller
[
EVOLUTION of µP
]
TAPASWINI PATTNAIK
ASSTISTANTPROCESSOR
DEPTOF ETC
C. V. RAMAN GLOBAL UNIVERSITY
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2. EVOLUTIONS OF MICROPROCESSOR
Microprocessor
Datawidth
(NO of data
bits)
No of
Address bits
Memory
Capacity
Clock
Frequency
(CPU Clock
rate)
Intel 4004(10µm)
4 Bits10 2
10
=1024 bytes
(1K Byte)
750 KHz
8085(3µm)8 bits16 2
16
=64 KB 3MHz
8086(3µm)16 Bits20 2
20
=1MB(1024
KB)
5-10 MHz
Pentium(0.8µm)32 Bits32 2
32
=4GB 60-200 MHz
Pentium 4(180nm)
64 bits36 2
36
=64 GB 1.3-3.2 GHZ
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3. Intel 4004
Pentium4
Intel 8086
Intel 8085
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4. 4

5. Lets have a POLL
https://www.menti.com/p8g6txiyuh
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6. RESULT POLL

https://www.mentimeter.com/s/6c22fc2f7676b430109aa7ab48bb8f
79/5cd1b0c3a961
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7. 8085 Microprocessor
Features:
8-bit Microprocessor(µp)
16 Address line (A0-A15) and 8
data lines(D0-D7)
Memory Capacity is 64KB ( 2
16
)
Clock frequency is 3MHz and
Oscillating Frequency is 6MHz
Time period is 320 ns(1/f)
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8. BUS ORGANISATION:

BUS is the set of Interconnecting lines between microprocessors and
peripheral.

It helps the microprocessor to communicate with peripheral I/O or
Memory.
CPU
I/O
MEMORY
BUS
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9. Basic Operations of µp:
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Memory read-Read data from memory
Memory Write-Write data to memory
I/O read-read data from Input/output
I/O Write-Write data to Input/output
1
2
3
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10. 10

11. 
Step 1: Identify the peripheral(Memory or I/O)

Step 2: Transfer Binary Information

Step 3:provide time and Synchronization Signal
To Communicate the peripherals µp needs
following steps

12. Types of BUS:
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ADDRESS BUS
CONTROL BUS
DATA BUS

13. 
Addressbus(Unidirectional)-carriesmemoryaddressesfrom
theprocessortoothercomponentssuchasprimarystorage
andinput/outputdevices.

Databus( Bidirectional)-carriesthedatabetweenthe
processorandothercomponents.

Controlbus-carriescontrolsignalsfromtheprocessorto
othercomponents.
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15. 15
https://app.sli.do/event/zg8qcc8z

16. You tube link:
https://youtu.be/lSVkXdWbYvE
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