Skip to Main Content
8051 Microcontroller (Internals, Instructions, Programming and Interfacing)
book

8051 Microcontroller (Internals, Instructions, Programming and Interfacing)

by Subrata Ghosal
May 2024
Intermediate to advanced content levelIntermediate to advanced
503 pages
17h 2m
English
Pearson India
Content preview from 8051 Microcontroller (Internals, Instructions, Programming and Interfacing)
22
GENERAL ARCHITECTURE
Internally, multiple numbers of this system clock oscillation are used for various purposes. If we desig-
nate each complete oscillation of the external crystal or clock source as a pulse, then two such pulses produce
a state. Six states generate one machine cycle. Instructions need one, two or four such machine cycles for
fetching the opcode and its execution (Fig. 2.11).
We have previously been introduced to the ALE signal of XX51. Two pulses of this ALE signal are
available for each machine cycle. A quick method to check whether an XX51 is functioning properly or not is
to monitor this ALE signal through an oscilloscope ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Start your free trial

You might also like

8051 Microcontroller, Internals, Instructions, Programming and Interfacing, 2nd Edition

8051 Microcontroller, Internals, Instructions, Programming and Interfacing, 2nd Edition

Subrata Ghoshal

Publisher Resources

ISBN: 9781282655034Publisher Website