jn53747@etana.tut.fi (Nousiainen Juha Antti) (02/02/90)
Are there any single chip microcontrollers with both
D/A and A/D-converters available?
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"The sum of the intelligence of the world is constant,
The population is growing."
Juha Nousiainen jn53747@tut.finurmi@etana.tut.fi (Nurmi Jari) (02/02/90)
From article <10979@etana.tut.fi>, by jn53747@etana.tut.fi (Nousiainen Juha Antti): > > Are there any single chip microcontrollers with both > D/A and A/D-converters available? > I wonder if they produce Intel 2920 any more. It had 9-bit A/D and D/A, and 25 bits (?) of accuracy in data path. No branches or subroutines. The year was around 1980... maybe it is not available any more. Jari Nurmi # Tampere University of Technology # /Signal Processing Laboratory nurmi@tut.fi # PO Box 527, SF-33101 Tampere, Finland (nurmi@tut.UUCP mcvax!tut!nurmi)# tel: +358 31 162 501 fax: 162 913
hpoppe@bierstadt.scd.ucar.edu (Herb Poppe) (02/03/90)
In article <10979@etana.tut.fi> jn53747@etana.tut.fi (Nousiainen Juha Antti) writes: > >Are there any single chip microcontrollers with both >D/A and A/D-converters available? > How about microcontrollers with one or two D/As? -- Herb Poppe NCAR INTERNET: hpoppe@ncar.ucar.edu (303) 497-1296 P.O. Box 3000 CSNET: hpoppe@ncar.CSNET Boulder, CO 80307 UUCP: hpoppe@ncar.UUCP
fcr@saturn.wustl.edu (Frank C. Robey X5569) (02/03/90)
>In article <10979@etana.tut.fi> jn53747@etana.tut.fi (Nousiainen Juha Antti) writes: >>Are there any single chip microcontrollers with both >>D/A and A/D-converters available? I don't know of any with a D/A, but there are several of the Motorola 6805 series chips which have a 4 channel 8 bit A/D on it. If need be, you can get DAC-08's cheap, and use on of the microcontroller ports to output to it. Either that, or use one of the outputs as a 1 bit D/A :-) Hitachi also sells similar chips, but the A/D is so poorly specified on the Hitachi part, that I wouldn't trust it to anything over about 5 bits. Frank Robey fcr@saturn.wustl.edu fcr@wuee1.wustl.edu Electronic Systems and Signals Research Laboratory Washington University- St. Louis
whit@milton.acs.washington.edu (John Whitmore) (02/03/90)
D/A and A/D converters on LSI chips are relatively costly (because their transistors have different specifications from logic transistors), but many microcontrollers have counters/timers which perform the digital part of either A/D or D/A functions. One uses a voltage-to-frequency converter (a '555 or even a simple CMOS Schmitt trigger can be connected with an op amp for this function), and counts the pulses as they come in. IBM game ports work this way. For D/A, either a charge pump (capacitor and a diode and resistor) for low accuracy or a voltage-to-frequency converter like a PLL chip (CD4046) for higher precision, can be run off a counter. One sets the counter divisor, clocking the input at some constant rate, and the PLL output voltage tracks the divided frequency. Analog usually means voltage, but current and frequency are also analog quantities; microprocessors are naturally easy to connect to frequency variables. I am known for my brilliance, John Whitmore by those who do not know me well.
markz@ssc.UUCP (Mark Zenier) (02/04/90)
In article <10979@etana.tut.fi>, jn53747@etana.tut.fi (Nousiainen Juha Antti) writes: > Are there any single chip microcontrollers with both > D/A and A/D-converters available? The Intel 8096 and one of the Motorola 68HC05 family have Pulse Width Modulated outputs. Filter them slow enough ... markz@ssc.uucp
qac@occrsh.ATT.COM (Quentin_Conner) (02/05/90)
jn53747@etana.tut.fi (Nousiainen Juha Antti) writes: >Are there any single chip microcontrollers with both >D/A and A/D-converters available? The motorola MC68HC11A4 micro has an eight channel 8-bit A/D converter - if this model is still available. Quentin Conner -------------- qac@occrsh.att.com
wiz@xroads.UUCP (Mike Carter) (02/06/90)
In article <10980@etana.tut.fi> nurmi@etana.tut.fi (Nurmi Jari) writes: >From article <10979@etana.tut.fi>, by jn53747@etana.tut.fi (Nousiainen Juha Antti): >I wonder if they produce Intel 2920 any more. It had 9-bit A/D and D/A, >Jari Nurmi # Tampere University of Technology > # /Signal Processing Laboratory >nurmi@tut.fi # PO Box 527, SF-33101 Tampere, Finland >(nurmi@tut.UUCP mcvax!tut!nurmi)# tel: +358 31 162 501 fax: 162 913 Yes...they do..on special order and quantities of over 100. We have 390 of them last count I made. It was a colossal error buying so many of them for such a small breakdown curve...but wires do get crossed. The article caught my eye particlarily about the 2920...simply because I've laughed so much at the stockpile we have of them. -Mikey
sutton@rhea.trl.oz.au (Peter Sutton) (02/06/90)
From article <461@ssc.UUCP>, by markz@ssc.UUCP (Mark Zenier): > In article <10979@etana.tut.fi>, jn53747@etana.tut.fi (Nousiainen Juha Antti) writes: >> Are there any single chip microcontrollers with both >> D/A and A/D-converters available? > > The Intel 8096 and one of the Motorola 68HC05 family have Pulse Width > Modulated outputs. Filter them slow enough ... > I'm interested in a single chip microcontroller with 2 PWM outputs for motor control, a serial port, ROM (preferably EPROM) and RAM (the more the better). Do the above mentioned chips have all these features? Are there other chips? I believe there is an NEC chip which has most of these features - can someone tell me a part number? Many thanks, Peter Sutton ----------------------------------------------------------------------------- Peter Sutton sutton@rhea.trl.oz.au Telecom Research Labs, 770 Blackburn Rd, Clayton, Vic., 3168, AUSTRALIA.
hpoppe@bierstadt.scd.ucar.edu (Herb Poppe) (02/07/90)
In article <1004@trlluna.trl.oz> sutton@rhea.trl.oz.au (Peter Sutton) writes: > >I'm interested in a single chip microcontroller with 2 PWM outputs for motor >control, a serial port, ROM (preferably EPROM) and RAM (the more the better). > Texas Instruments makes the TMS370 family (no, these do not emulate an IBM 370 mainframe). As I recall, there are two branches to the family. One is a 28 pin device, the other something like 68 pins. At least one member in each branch has EEROM for program memory. The timers for the 28 pin branch are not as fancy but I think you can do two PWM outputs. The family sports both asynchronous and synchronous serial I/O; I don't recall if the 28 pin branch has async I/O. There is a branch of the National Semi COP800 family of microprocessors that had members with 2 timers, async serial I/O and EEROM for both program and data. COP8784CK and COP8788CK. These don't seem to have made it into production. They appear in the 1988 Master Selection Guide but not in the 1989 one. There is a ROM version of a device in this branch that is in production. I think I heard that there is either an UV EPROM or piggyback development device to support the ROM version. -- Herb Poppe NCAR INTERNET: hpoppe@ncar.ucar.edu (303) 497-1296 P.O. Box 3000 CSNET: hpoppe@ncar.CSNET Boulder, CO 80307 UUCP: hpoppe@ncar.UUCP
jhuang@sci.ccny.cuny.edu (Jian Huang) (02/07/90)
In article <1004@trlluna.trl.oz> sutton@rhea.trl.oz.au (Peter Sutton) writes: > >I'm interested in a single chip microcontroller with 2 PWM outputs for motor >control, a serial port, ROM (preferably EPROM) and RAM (the more the better). > >Do the above mentioned chips have all these features? Are there other chips? >I believe there is an NEC chip which has most of these features - can someone >tell me a part number? > >Many thanks, > I belive intel 8096 (new comer 80196) has these futures. The NEC chip you are looking for is uPD78310 which is more suitable for motor control with its special counters, context switch and macro service functions. -- JIAN HUANG System Software Engineer jhuang@sci.ccny.cuny.edu Klinger Scientific jhuang@ccnysci.uucp Garden City, NY 11530 jhuang@ccnysci.bitnet (516)745-6800
john@anasaz.UUCP (John Moore) (02/07/90)
In article <1004@trlluna.trl.oz> sutton@rhea.trl.oz.au (Peter Sutton) writes: ] ]From article <461@ssc.UUCP>, by markz@ssc.UUCP (Mark Zenier): ]> In article <10979@etana.tut.fi>, jn53747@etana.tut.fi (Nousiainen Juha Antti) writes: ]>> Are there any single chip microcontrollers with both ]>> D/A and A/D-converters available? ]> ]> The Intel 8096 and one of the Motorola 68HC05 family have Pulse Width ]> Modulated outputs. Filter them slow enough ... ]> ] ]I'm interested in a single chip microcontroller with 2 PWM outputs for motor ]control, a serial port, ROM (preferably EPROM) and RAM (the more the better). ] ]Do the above mentioned chips have all these features? Are there other chips? ]I believe there is an NEC chip which has most of these features - can someone ]tell me a part number? ] What you want is an Intel 8096 or 80C196 family device. -- John Moore (NJ7E) mcdphx!anasaz!john asuvax!anasaz!john (602) 951-9326 (day or eve) long palladium, short petroleum 7525 Clearwater Pkwy, Scottsdale, AZ 85253 Freedom and Communism are incompatable.
jpexg@wheaties.ai.mit.edu (John Purbrick) (02/08/90)
Re requirement for PWM output, ROM and RAM: I recently programmed an Intel 8031 to run 8 (you can count 'em!) PWM outputs. This chip has 128 bytes of RAM (256 in the 8032), a serial port, and EPROM (in the 8751/8752). Now I have to admit that the PWM outputs were only at 40Hz, with 100 possible duty cycles (--> 4KHz interrupt frequency) but it was what that job (running small motors) demanded. John Purbrick jpexg@ai.mit.edu
peggy@pyr.gatech.EDU (Cris Simpson) (02/09/90)
In article <1990Feb7.034737.8071@sci.ccny.cuny.edu> jhuang@sci.ccny.cuny.edu (Jian Huang) writes: >>I'm interested in a single chip microcontroller with 2 PWM outputs for motor >>control, a serial port, ROM (preferably EPROM) and RAM (the more the better). > >I belive intel 8096 (new comer 80196) has these futures. >The NEC chip you are looking for is uPD78310 which is more >suitable for motor control with its special counters, context >switch and macro service functions. If you are looking for speed, look at the TI TMS320C14. It's a TMS32010 core w/ uC stuff tacked on. Features: - Single cycle multiply (160nS) - 6.4 MIPS - Six PWM outputs - Four 16 bit Timers - Barrel Shifter - Lots o' other Stuff Best of all, TI claims they'll have the price down to $10 RSN. TI TMS320 hotline (713) 274-2320 cris disclaimer: I just use the things.