8051

Hi, I'm working with a project where I'm building an spwm inverter using 8051 (at89c2051) uC IC. Now I'm planing to add a feedback system to regulate the output voltage. My thought was using an optocoupler to read the transformer secondary voltage and compare the output of the opto with a...

Hi all - I'm making a 2 minute countdown timer, for an assignment. I currently have a register holding the minutes, and the seconds. For some reason though, sometimes a single (but different each time) segment of my 7 segment display will momentarily turn off and back on, it's quite a minor...

So hello:3 I have already tried many things, and looked at many things, but I can't implement any way to read a value from my data table character by character here code: Morse: mov DPTR, #Text ; Point to the beginning of the text mov...

Hi, I want to to copy the data of and external ROM adress to an external RAM adress, my try : CLR A MOV DPTR, #8000H ; 8000H is the ROM Adress MOVC A, @A+DPTR; A gets DPTR's data MOV DPTR, #6000H ; 6000H is the RAM Adress MOVX @DPTR, A is this program correct? if yes is it the only method?

Hi, I have a question about 8051 I have an instruction which at adress 0020H and codded as 80F0H what would be the value of PC? i don't understand how can i decode it

I am trying to display 1 through 9 while rotating on win8051 what am i missing here: ; Initialize number to display MOV R1, #0 ; Main Loop LOOP: ; Display R1 on the 7-Segment CALL GETDIGIT CALL DISPLAY ; Wait one second CALL DELAY ; Increment R1 CALL INCREASE ; Repeat the Loop JMP LOOP ; Delay...

So we've been instructed to write an assembly language program to display numbers 0-9 on a common anode 7 Segment Display and simulate it using the Proteus Software. (8051 microcontroller) (And 0-F as well) I'm a complete beginner in this field and was hoping that I'd get some help here from...

I was tasked with creating a certain 8051 microcontroller project by my professor and I am keen to build the project all by myself, however, in order to carry out the given assignment, I may need some expert guidance. The project description is provided in below paragraph. The microcontroller...

I currently working on a MCS-51 based project and I tried to burn hex file into my microcontroller. The microcontrollers I used are AT89S51 and STC89C51RC. I tried to use ProgISP and AVRDUDESS to burn hex file into the chips but both came up errors. When I use ProgISP to load up hex file, this...