You have ALE (pin 30) connected to 5 Volts, this is wrong (smoke) EA (pin 31) should be connected to 5 Volts.

 

Get rid of that power symbol on C8 or label it so it won't get connected +5V

 

should I start to implement on breadboard ?

 

Sure you can. If the LED doesn't light up well, check post #8 again.

Allen

 

Sure you can. If the LED doesn't light up well, check post #8 again.

Allen

Hello Allen
I have connected some component on breadboard. I am attaching some Images so that you can check connection. sorry for the low quality of pictures

 

Are you connecting P32 to Vcc? Shouldn't it be P31 "EA"?

That wrong connection would cause p0.7 to get smoked when it is config as output....

Allen

 

Are you connecting P32 to Vcc? Shouldn't it be P31 "EA"?

That wrong connection would cause p0.7 to get smoked when it is config as output....

Allen

No , I have connected p31 to vcc
I assume microcontroller pin 0 to 39
pin 9 rest pin
pin 10,11 connected with rs232 Ic
pin 31 EA pin connected with vcc
pin 38 connected resistor to led

 

The pin counting of 8051 is 1 to 40 and NOT 0 to 39. Look at the attached picture....

Allen

 

The pin counting of 8051 is 1 to 40 and NOT 0 to 39. Look at the attached picture....

Allen

Hello Allen
I have corrected my mistake. now I have db9 male connector. I have written assembly code. I have hex file . could I burn program ?

 ORG     0

MainLoop:
        setb    P0.0                    ; Turn LED ON
        Acall   Delay                   ; Wait a short time
        clr     P0.0                    ; Turn LED OFF
        Acall   Delay                   ; Wait a short time
          sjmp  MainLoop                ; Loop forever

Delay:
        mov     R1,#90                  ; Set up outer loop count
        mov     R2,#225                   ; Set up inner loop count
Delay1: djnz    R2,Delay1               ; Inner loop
        djnz    R1,Delay1               ; Outer loop
        ret

        end

 

Sorry I am not sure. I have never used flash magic program before.

Others who have used this chip with Flash Magic might be able to help you....

But you could always try it yourself first and report the problem you encountered if there is any.

Allen

 

Sorry I am not sure. I have never used flash magic program before.

Others who have used this chip with Flash Magic might be able to help you....

But you could always try it yourself first and report the problem you encountered if there is any.

Allen

I tried myself I am getting error message
reset the device in ISP mode