8051 on-chip debugging

Started by Schueler in sci.electronics.design6 years ago 107 replies

Folks, I would like to use the 8051 derivate MAXIM DS89C4xx in one of my experiments regaring motor controlling but I am worried about...

Folks, I would like to use the 8051 derivate MAXIM DS89C4xx in one of my experiments regaring motor controlling but I am worried about the on-chip debugging capabilites. I could not find any material on this topic. Does anybody know whether the DS89C4xx series support debugging or not? Any other known 8051 derivate which features on-chip debugging and which offers an evaluation bo...


8051 On/Off Circuit

Started by mpm in sci.electronics.design10 years ago 40 replies

This is general enough to be of use to several folks. Anybody got a simple momentary keypad-switchable ON-OFF circuit for a 8051 (or...

This is general enough to be of use to several folks. Anybody got a simple momentary keypad-switchable ON-OFF circuit for a 8051 (or similar)? Figure about 100 mA MAX, and will be battery operated (9-Volt). Program will run for a minute or so, then the device should shutdown (under uPC control) until the next time it's needed. Probably do this about 20 times a day. Battery lifetime is...


SPI between several 8051s

Started by EdV in sci.electronics.design7 years ago 12 replies

Hi, anybody out there done an SPI interface between several 8051s? 1. Do I need to provide HW (jumper select MOSI and MISO) type of things...

Hi, anybody out there done an SPI interface between several 8051s? 1. Do I need to provide HW (jumper select MOSI and MISO) type of things to make one 8051 the master and the rest of the 8051s slaves or 2. Does the dedicated SPI HW and internal 8051 resources allow for MOSI and MISO to mux serial in and out so I don't need to have jumpers. I am using Silabs 8051F60s and 8051F20s t...


circuit simulator for 8051 microcontrollers

Started by Srinivas Nayak in sci.electronics.design5 years ago 7 replies

I am looking for a circuit simulation software, so that I can make a circuit using ds89c430 microcontroller, simulate/check and then purchase the...

I am looking for a circuit simulation software, so that I can make a circuit using ds89c430 microcontroller, simulate/check and then purchase the parts and make a kit. Can you please let me know, which circuit simulation software is good, and supports 8051 microcontrollers. Better if open source / free circuit simulation software.


Released under GPL2: An 8051-8052 2 pass assembler for the Linux OS.

Started by Jan Panteltje in sci.electronics.design8 years ago 12 replies

Released under GPL2: An 8051-8052 2 pass assembler for the Linux OS. http://panteltje.com/panteltje/newsflex/a52-2.0.tgz This is a very...

Released under GPL2: An 8051-8052 2 pass assembler for the Linux OS. http://panteltje.com/panteltje/newsflex/a52-2.0.tgz This is a very simple assembler, and has less features then all the big macro ones. But it has one feature all other ones do not have as far as I know: It can generate binary output in MCS-52 BASIC data statements. this makes writing inline asm easy in MCS-BASIC. For ex...


c programming of microcontrollers

Started by mach in sci.electronics.design9 years ago 10 replies

Guys can anione suggest some websites havin free tutorials on C programming of microcontrollers (precisely intel 8051 family )it would b of...

Guys can anione suggest some websites havin free tutorials on C programming of microcontrollers (precisely intel 8051 family )it would b of great help


ad7606 with PIC

Started by Wills in sci.electronics.design6 years ago

Hi all, Has anyone interfaced AD7606 ADC with a PIC or 8051/52? Any code snippets or schematics available? Thanks.

Hi all, Has anyone interfaced AD7606 ADC with a PIC or 8051/52? Any code snippets or schematics available? Thanks.


Cleaning shop...

Started by mpm in sci.electronics.design2 years ago 3 replies

Watch this space (if you're interested). Partisanship and nepotism definitely encouraged on this one... I'm going to be unloading a boatload...

Watch this space (if you're interested). Partisanship and nepotism definitely encouraged on this one... I'm going to be unloading a boatload of electronic parts and equipment very soon. CHEAP. As in, a $50 steak dinner and you pick up the shipping. Ideal purchaser, and my strong preference: An EE or similar student. I'll inventory it all this weekend. It's mostly 8051-derivatives dev...


Driving a piezo sounder

Started by Martin Griffith in sci.electronics.design9 years ago 3 replies

What is the best way to drive this sounder http://www.farnell.com/datasheets/75458.pdf I don't have one to play with at the moment, but the...

What is the best way to drive this sounder http://www.farnell.com/datasheets/75458.pdf I don't have one to play with at the moment, but the data sheet says it has 18000pF capacitance. I'll be driving it from a 8051 port pin, 5v available. I suppose a push pull arrangement would be best martin


Re: 89C51ED2

Started by nospam in sci.electronics.design9 years ago 2 replies

"TT_Man" wrote: > > Only if this code was written by a competent engineer and you also > > send money. I don't work for free. > > > ...

"TT_Man" wrote: > > Only if this code was written by a competent engineer and you also > > send money. I don't work for free. > > > ASM is for twits, the clueless, poor and morons mainly AFAICS. > > > > I guess this is where we will part company on this subject. > > Me too........ Funny, this week I spent two days porting 5000 lines of C from an 8051 to a 16bit PI


Re: 8051 was My hat is off to Microchip and their CEO!

Started by Jon Kirwan in sci.electronics.design8 years ago 2 replies

On Fri, 30 Oct 2009 19:12:17 -0700 (PDT), MooseFET wrote: > On Oct 30, 2:09?pm, Jon Kirwan wrote: > [.. was PIC now 8051s ..] > > >...

On Fri, 30 Oct 2009 19:12:17 -0700 (PDT), MooseFET wrote: > On Oct 30, 2:09?pm, Jon Kirwan wrote: > [.. was PIC now 8051s ..] > > > > I'm using one from SiLabs, right now. > > Just one? One of my designs is about to go into production with two > F120s clocked at nearly 90MHz. One of them is just about fully busy. The > other has many microseco


want help learning practical circuit design

Started by Rohit kumar Chandel in sci.electronics.design9 years ago 52 replies

I am an electronics hobbyist and a software engineer. I have an experience of 3.5+ yrs of working on 8051 assembly language,C. I know very well...

I am an electronics hobbyist and a software engineer. I have an experience of 3.5+ yrs of working on 8051 assembly language,C. I know very well interfacing microcontroller to real world, using sensors,ADC,DAC,motors etc. But my problem is that I can do programming but for circuit design I have to look for somebody else. I want to learn this last area to give me satisfaction of building som...


comm problem

Started by Anonymous in sci.electronics.design9 years ago 4 replies

Hi all, I am working on led display project, i am using AT89S53(8051) for programming(keil C) . from last three days i am facing serious...

Hi all, I am working on led display project, i am using AT89S53(8051) for programming(keil C) . from last three days i am facing serious problem with communication. I want to communicate PC to LED there is another IC on board provided me, that is MAX1487 and there are only two wire conneting(RXD,TXD) to it. iam connectint only two wire from com port. problem is that i am not able to r...


Re: 8051 was My hat is off to Microchip and their CEO!

Started by Jon Kirwan in sci.electronics.design8 years ago 1 reply

On Sat, 31 Oct 2009 09:10:27 -0700 (PDT), MooseFET wrote: > On Oct 31, 12:36?am, Jon Kirwan wrote: > > By the way, since you use...

On Sat, 31 Oct 2009 09:10:27 -0700 (PDT), MooseFET wrote: > On Oct 31, 12:36?am, Jon Kirwan wrote: > > By the way, since you use SiLabs regularly and I've only been using > > their IDE for a month... How do you get it to display some 'cycle > > count' figure? ?I'd like to see an absolute figure, best of all, and > > take a snapshot of it from the


Delta Sigma DAC article

Started by Charlie E. in sci.electronics.design5 years ago 9 replies

Hi All, Ok, going crazy (short trip, I know...) A few months ago, I saw an article that included information on delta sigma DACs, inlcuding...

Hi All, Ok, going crazy (short trip, I know...) A few months ago, I saw an article that included information on delta sigma DACs, inlcuding some code the author had written, I belive for an 8051, to implement one in software. So, now that I finally want to try it out, I can't find it anywhere. Anyone know what magazine or have a link to that article? I thought it was in EDN, but can't f...


8051F020 series, 5V tolerant input schematic?

Started by Joerg in sci.electronics.design4 years ago 89 replies

Folks, Got a Silicon Labs 8051Fxxx with 5V-tolerant ports. In the abs max it says 5.8V is the limit. Well, if one uses the typical diode...

Folks, Got a Silicon Labs 8051Fxxx with 5V-tolerant ports. In the abs max it says 5.8V is the limit. Well, if one uses the typical diode against the 5V rail it could go slightly above 6V in case of a really big jolt. Since this 8051 does not have a 5V supply but just VDD (which hangs on 3.3V in this case) there can't be any parasitic substrate diodes dumping into a rail. Does anyone kno...


Are some 8051s ICP compatible?

Started by Anonymous in sci.electronics.design3 years ago 3 replies

I've never used an 8051/8052, but have used other uCs. I have an 8052 comp= atible chip in a commercial product that has a defective pin, and...

I've never used an 8051/8052, but have used other uCs. I have an 8052 comp= atible chip in a commercial product that has a defective pin, and I'm tryin= g to figure out if I could possibly read the firmware from it and replace i= t. In other words, is it code protected. The original is made by Winbond, now Nuvoton, part w78e052c40dl. It would = be nice if I could figure out if it's code ...


Uart through an audio transformer

Started by Martin Griffith in sci.electronics.design9 years ago 27 replies

Any rules of thumb about sending a 9600 baud UARTsignal ,from an 8051 through a telecom type V90 audio transformer, (LT spice K L1 L2 1 @ 4mH Rs...

Any rules of thumb about sending a 9600 baud UARTsignal ,from an 8051 through a telecom type V90 audio transformer, (LT spice K L1 L2 1 @ 4mH Rs = 10R) I only need about 8 bytes of data, and LTspice seems to need a square wave for about a millisecond before it settles down. So a long sync word of 010101 etc then a start byte? I'll pad the sig down to 100mV or so martin


Re: DSP Device for Guitar Pedal Effect

Started by krw in sci.electronics.design8 years ago 1 reply

On Fri, 06 Nov 2009 17:28:03 +0000, ChrisQ wrote: > krw wrote: > > > > > IOW, pretty trivial stuff. I'd likely use an 8051 for that...

On Fri, 06 Nov 2009 17:28:03 +0000, ChrisQ wrote: > krw wrote: > > > > > IOW, pretty trivial stuff. I'd likely use an 8051 for that too (and > > pass the crap job off to the firmware group ;-). > > In my small company, I *am* the firmware group, and think software > design far more than hardware these days :-). Obviously. ...even when the solution should be in hardwar


Re: 8051 on-chip debugging

Started by John Devereux in sci.electronics.design6 years ago

Chris H writes: > In message , John Devereux > writes > > As ChrisH says, it's in the license conditions of the commercial > >...

Chris H writes: > In message , John Devereux > writes > > As ChrisH says, it's in the license conditions of the commercial > > compilers. The big players anyway. > > Not all of them.... tends to be a N. American thing. > > > We used to have a guy on here who was extremely knowledegable about the > > ARM compiler libraries