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8051
Sci.Electronics.Design is a worldwide Usenet news group that is used to discuss various aspects of Electronic Circuit Design.
We found 108 threads matching "8051"
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The most relevant threads are listed first
ADC Converters (General Clocking Question)
mpm - 2009-07-01 08:29:00
I'm looking at this part:
http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=PCM1801U-ND
Texas Instrument / Burr-Brown PCM1801
A 16-bit stereo Analog-to-Digital Converter (single ended).
It requires a 256x sample clock, in addition to some other clocks for
clocking out the ser...
8051 On/Off Circuit
mpm - 2007-12-28 17:25:00
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 cont...Re: Little PICs with hi-res A-D ?
Eeyore - 2008-10-17 11:27:00
Jasen Betts wrote:
> Eeyore wrote:
>
> > > I guess you could try oversampling. If you really need more than 10 bits,
> > > maybe an external chip? You really haven't provided much information on
> > > your ADC performance requirements.
> >
> > Doesn't need to be fast fo...Re: Overview Of New Intel Core i7(Nehalem) Processor
JosephKK - 2009-06-19 09:51:00
On Thu, 18 Jun 2009 07:53:27 -0700 (PDT), MooseFET
wrote:
> On Jun 17, 10:08=A0pm, "JosephKK" wrote:
> > On Tue, 16 Jun 2009 18:32:33 -0700 (PDT), MooseFET
> >
> >
> >
> > wrote:
> > > On Jun 16, 1:19=A0am, "JosephKK" wrote:
> > > > On Sun, 14 Jun 2009 17:10:27 -0700 (PD...Re: DSP Device for Guitar Pedal Effect
ChrisQ - 2009-10-26 14:41:00
Tim Wescott wrote:
>
> C?!?
>
> This is a job for assembly, unless you want an obnoxiously big,
> expensive, and power hungry part in there.
>
> C isn't a good fit for fast DSP algorithms. Unless you luck out with a
> very wise compiler you're best hand-fitting the code to th...Re: DSP Device for Guitar Pedal Effect
krw - 2009-11-06 18:52:00
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 m...Re: DSP Device for Guitar Pedal Effect
JosephKK - 2009-11-08 14:09:00
On Fri, 6 Nov 2009 10:26:46 -0800 (PST), Fred
wrote:
> I see the Spin chip is 6 MIPS, at 48kHz sample rate that only allows
> about 125 instruction steps per sample. I was thinking of some thin
> with at least 30 MIPS.
>
> I see those Silicon Labs devices run at 50 and 100 MIPS, that wo...Re: Atmel AT89C51RD2 vs NXP P89C51RD2
Tilmann Reh - 2008-02-14 02:49:00
Rich Webb schrieb:
> Don't know about compatability but the AVR part is programmed using
> their "FLIP" utility.
JFTR: It's *not* an AVR, but an 8051 derivative.
Tilmann
...Re: The world has never seen such freezing heat
JosephKK - 2008-11-26 23:18:00
On Wed, 26 Nov 2008 14:11:15 +0000, Eeyore
wrote:
>
>
> bill.sloman@ieee.org wrote:
>
> > It's successors might be more interesting - the computers available in
> > 1960 weren't all that impressive. I wrote my first program in 1965 for
> > Melbourne University's IBM 7040/44 which ...Re: Never used PIC before
Eeyore - 2008-05-05 21:40:00
Rich Webb wrote:
> And for what it's worth, I've almost never gotten a demo/development
> board and sample software combination to work together right out of
> the box. Seems that it's a natural law that one or the other have been
> "updated" at some point in time and what you have won...Re: Microcontroller IO
donald - 2008-03-06 16:29:00
marshall wrote:
> Can anyone recommend something to read about how to do the hardware to
> use microcontroller IO?
>
> marshall
Do you have a specific micro-controller in mind ?
IO on an 8051 is very different from the IO on an MSP430.
donald
...c programming of microcontrollers
mach - 2008-02-10 00:44:00
Guys can anione suggest some websites havin free tutorials on C
programming of microcontrollers (precisely intel 8051 family )it would
b of great help
...Re: a dozen cpu's on a chip
Spehro Pefhany - 2008-05-13 09:46:00
On Tue, 13 May 2008 06:25:18 -0700 (PDT), MooseFET
wrote:
> On May 12, 7:17 pm, John Larkin
> wrote:
> > On Mon, 12 May 2008 18:33:32 -0700 (PDT), MooseFET
> >
> > wrote:
> > > On May 12, 8:23 am, John Larkin
> > > wrote:
> > > > On Sat, 10 May 2008 06:42:01 -0700 (PDT)...Re: Digital wireless systems
linnix - 2008-05-22 17:36:00
On May 22, 1:19 pm, john wrote:
> Hello,
>
> What inofmation do you require? Please let me know.
>
> Regards,
> John
For the first link. I don't think you need the 8051, if you already
have an FPGA.
I can't read the second link, so I can't tell if it's the right chip
or not. If...Driving a piezo sounder
Martin Griffith - 2008-05-17 04:42:00
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
...Re: Learning PIC - where to start?
Rich Grise - 2009-02-25 18:02:00
On Sun, 22 Feb 2009 21:08:38 +0000, Nobody wrote:
Subject: "Learning PIC - where to start?"
Here:
http://www.atmel.com/products/8051/default.asp
Hope This Helps!
Rich
...Re: RF
Andrew Holme - 2010-02-24 17:40:00
"john" wrote in message
news:82819282-3b04-4d23-8051-6b3081686289@y17g2000yqd.googlegroups.com...
> Hi,
> Thanks. what is single ended RF port.
>
> John
>
When you have one side of the circuit live and the other is ground - like
coax - that's single ended.
...Re: Interfacing to SD flash cards ?
Eeyore - 2008-02-12 14:42:00
donald wrote:
> Eeyore wrote:
> > Has anyone here done this ?
> >
> > Graham
>
> Of all people on the newsgroup, I would think you would find something
> on the net !!!
No substitute for asking the posters here though. Useful lead from Brendan
you see.
> As more then...Re: DSP Device for Guitar Pedal Effect
JosephKK - 2009-11-11 18:10:00
On Mon, 9 Nov 2009 09:17:21 -0800 (PST), Fred
wrote:
> On Nov 8, 2:09 pm, "JosephKK" wrote:
> > On Fri, 6 Nov 2009 10:26:46 -0800 (PST), Fred
> >
> >
> >
> > wrote:
> > > I see the Spin chip is 6 MIPS, at 48kHz sample rate that only allows
> > > about 125 instruction steps ...Uart through an audio transformer
Martin Griffith - 2008-10-04 16:26:00
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...Re: Disobeying jet engines - why?
Rich Grise - 2008-01-31 13:04:00
On Thu, 31 Jan 2008 07:40:26 -0800, John Larkin wrote:
...
> Show us some embedded products you've done, and tell us about the OS's
> and architecture.
I've worked on a handful of embedded systems - an 8051 interface from
scratch, an 8048 FIFO buffer, Z-80 and 80186 embedded controllers, an...Combo CPLD + uController - Any devices other than Atmel FPSLIC parts?
Jim Flanagan - 2008-05-09 17:30:00
Does anyone know if there is an alternative device similar to
the Atmel FPSLIC (AVR +FPGA)? I would like something like
an 8051 derivative that has some built in configurable programmable
logic. The Atmel parts are nice, but overkill for my application.
They are also somewhat expensive. My ...Re: Guess what I just had to re-boot...
krw - 2009-12-27 21:15:00
On Sun, 27 Dec 2009 18:08:42 -0800, Joerg
wrote:
> John Larkin wrote:
> > On Sun, 27 Dec 2009 13:47:40 -0800, Joerg
> > wrote:
> >
> > > Jim Thompson wrote:
> > > > Guess what I just had to re-boot...
> > > >
> > > > Wife just now comes into my office and says the dishwasher...Embedded w/ either SD Memory or CompactFlash
mpm - 2008-11-05 12:53:00
Can anyone point me to a good resource on interfacing either SD Memory
or CompactFlash to embedded processors? We're an 8051-shop mostly.
Either C or Assembler, preference is Assembler.
I need to attach a huge lookup table, on the order of 16GB, maybe even
32GB.
Speed is not that critical (I...Re: 8 Bit number to 3 seperate 7-segment LED displays
Eeyore - 2008-01-08 11:49:00
Sean Brown wrote:
> Good afternoon,
>
> I was wondering if anyone can give me some ideas on how to take an 8-
> bit number and display it on 3 LED displays.
>
> I would be extremely grateful if you could give me a push in the right
> direction.
By far the simplest (fewest part...Serial data bus help needed [CROSS-POST]
Mr. Cabdriver - 2008-01-11 15:12:00
Hi,
I need a serial bus can support speeds up to 10 mbit/s with error correction
included and that can carry signal up to 50 meters (about 150 feet) with no
signal repeaters. Is there such a thing that you know of?
The plan is to use Atmel's 8051 chips (haven't decided wich model exactly
...want help learning practical circuit design
Rohit kumar Chandel - 2008-02-20 07:19:00
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...Re: Electronic AT89C52 counterfeits ?
Eeyore - 2008-06-10 07:33:00
Spehro Pefhany wrote:
> the renowned Eeyore wrote:
> > jaby_1985@163.com wrote:
> >
> > > AT89C52 datasheet download
> >
> > Seen a lot of 89C52 and related family chips advertised on ebay from HK
> > sellers for example.
> >
> > Do you reckon there may be large scale co...Re: Microchip buys Hi-Tech Software
Nico Coesel - 2009-03-13 18:09:00
"Joel Koltner" wrote:
> "Nico Coesel" wrote in message
> news:49baa239.1285504281@news.planet.nl...
> > Good question. The traditional PIC is soon to be overtaken by the ARM
> > derivatives.
>
> For some markets, sure... but in many commodity items like remote controls it
> doesn...Re: DSP Device for Guitar Pedal Effect
krw - 2009-11-05 19:13:00
On Thu, 05 Nov 2009 11:04:29 +0000, ChrisQ wrote:
> krw wrote:
>
> >
> > You must have some pretty trivial problems then.
>
> One design was a legacy (1996) counter driven state machine pwm driver
> with less than a dozen ttl devices and an eprom. A gate array looked
> attractive...Re: Making a non-linear resistance look linear
MooseFET - 2010-01-31 19:16:00
On Jan 31, 3:46=A0pm, Pete Verdon
wrote:
> Jan Panteltje wrote:
> > sender -> [PIC, ADC in, lookup table, PWM DAC out] -> analog meter.
>
> Thanks, but I'm hoping to avoid using a PIC. It would be possible, but I
> don't own a programmer, and it's a very long time indeed since I did...Re: OT: UK okays warrantless remote hacking of PCs
John Larkin - 2009-01-09 15:33:00
On Fri, 9 Jan 2009 13:36:34 -0600, krw wrote:
> In article ,
> rich@example.net says...>
> > On Wed, 07 Jan 2009 17:14:08 -0800, John Larkin wrote:
> > >
> > > What happened to i/d space separation?
> >
> > The intel engineers weren't smart enough to figure out how to
> > ...Re: XO controlled 480Hz Oscillator
Tim Wescott - 2010-02-02 12:56:00
On Tue, 02 Feb 2010 09:47:50 -0800, Chris wrote:
> > The simplest way is MCU with external crystal. For 480 Hz output, the
> > crystal is likely to be a multiple of 3 MHz. The 12.0 MHz would be the
> > most common.
>
> Is an MCU the same as a PIC?
All PICs are MCUs. Not all MCUs are...Re: Hack an Ancient MSI Music Chip?
mpm - 2010-02-07 21:22:00
On Feb 7, 9:07=A0pm, Zephinilium wrote:
> On Feb 7, 5:34=A0pm, Peter Bennett wrote:
>
>
>
>
>
> > On Sun, 7 Feb 2010 14:04:35 -0800 (PST), Zephinilium
>
> > wrote:
> > > I have this pc board out of a keyboard made by Think! Software. I
> > > dont' have any cables o...Re: 89C51ED2
nospam - 2008-09-06 22:21:00
"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.........Re: Overview Of New Intel Core i7(Nehalem) Processor
krw - 2009-06-14 23:56:00
On Sun, 14 Jun 2009 17:10:27 -0700 (PDT), MooseFET
wrote:
> On Jun 15, 1:51 am, John Larkin
> wrote:
> > On Sat, 13 Jun 2009 08:42:29 -0700 (PDT), MooseFET
> >
> >
> >
> > wrote:
> > > On Jun 13, 10:58 am, John Larkin
> > > wrote:
> > > > On Fri, 12 Jun 2009 19:29:1...Re: microphone inputs to .wav file on microSD card?
mpm - 2009-11-05 15:58:00
On Nov 5, 8:21=A0am, "starfire151" wrote:
> Thanks to all who replied.
>
> I was really hoping to put together a system based on something like the
> dsPIC and an audio codec with an SD or uSD card for storage.
>
In another thread, I discovered the BlackFin processors were really
th...Re: 89C51ED2 update
Eeyore - 2008-09-11 17:15:00
TT_Man wrote:
> "Eeyore" wrote
> > TT_Man wrote:
> >
> > > None, not even a whisper or acknowledgement from Atmel support :(
> >
> > Was it an email ?
> >
> > Have you tried phoning ? Asking for a senior member of staff often does
> > the trick. Better still get the...Re: bit banged Basic52 code for 4-wire serial interface
donald - 2007-12-30 21:33:00
Largo wrote:
> Hi,
> Can someone site location or post example code for a MAX6969 LED driver for
> 8052 project? I have the Max chip for driving LED's prototyping on a 8052
> development board. It uses "industry standard" 4-wire serial interface
> (SPI?). I have BASIC code for a I2C ...Intel (c) hex file to code in MCS-51 BASIC DATA statements converter released under the GPL.
Jan Panteltje - 2010-01-13 09:22:00
Intel (c) hex file to code in MCS-51 BASIC DATA statements converter released under the GPL.
This is software for the Linux OS.
http://panteltje.com/panteltje/newsflex/download.html#hxl
This makes it easier to use inline code in 8051 / 8052 embedded systems that run MCS BASIC.
...