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I am refering "bubbled" as inverted logic see on atmega on reset there is a bubble and in pin diagram there is a bar on reset
for logic 8051 not going to be reset while atmega will reset and for logic 1 it will be inversed.
hi to all,
I have problem regarding ATMega162.
I have a trainer board of 8051 and i find that 8051 reset pin is not bubbled
and atmega162 have bubbled one
AT89s52 8051
**broken link removed**
ATMEGA162
**broken link removed**
so i decided to make a seperate board for programming atmega 162...
actually there is not as it is written
but a 5$ eeprom burner thread on the net
$5 EEPROM programmer - HomemadeTurbo - DIY Turbo Forum
and in my system I don't have such port. and ft232 is much expensive.
And from that thread I got idea of that I may need a separate burner.
but
I Read in...
Hi,
I want to interface my microcontroller with external EEPROM and SRAM I have circuit diagram similar like this one
NOT EXACTLY as my book have little difference in circuit
and the circuit with only sram is like this
I think that there will no much problem when interfacing with external...
I have taken up the pic of the book figure and my circuitry
this is my circuit I use copper thread wires because other solder joining purpose wires are limited
From back side
From Front side
I also found the same kind of image of the first one of my this post a website and it is text...
HI, to all
I made 2 keypads 3x3,4x4. I think I made them wrong. I want to troubleshoot the problem please guide me in that and can I do the job of keypad from only one port for input as well as output because book says to use 2 separate ports one for the input and one for the output.I think by...
hi
sorry for late reply
I have a book "The 8051 uC and Embedded System" Mauhammad Ali Mazidi, Janice Gillispie Mazidi, Rolin D. McKinlay
in the book it says for port 0 pull up is required pull up resistor stating reason is it is Gate of Mos or base of TTL and port 3 is for interrupt purpose...
ok do I make the connections in this way(connections at lcd with 10k trimpot vcc,vss,vee)
and also do i need two separate 5v(approx) supply?
**broken link removed**
hi,
I am trying for interfacing lcd with 89s52
for connection purpose I soldered the pins 1..16 with a connecto
so before interfacing I try to test it up.
**broken link removed**
When I connect 15(back LED+),16(back LED-) with battery yellow-green led light ups.
but When I connect...
what I think for it may be you also go in this way.
It have two sensor for seeking light(for moving in the direction of light) .
and two sensor for "if light detected stop (I think it for seeker one)"(for checking state whether light is there or not) .
sorry but I am new to robotics (just 1...
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