Post by thread:i - 16F877 samples ii - PIC 18xxx info

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'i - 16F877 samples ii - PIC 18xxx info'
1999\05\18@083403 by Russell McMahon

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Imre, Did you find a source of 16F877? I went to a Microchip seminar today (in New Zealand ) and they were handing out what they said were alpha-versions of the chip one per attendee. Code on top is 9915B3P - how old is that (where'd I put that recent release re new date codes :-)) They also discussed the coming PIC 18xxx family - presumably they have been doing this at other meeting recently. If not then I suppose I will be inundated. I haven't looked at the MChip website lately - is information on this new line generally available? Russell McMahon From: Dr. Imre Bartfai <spam_OUTrootTakeThisOuTPROF.PMMF.HU> Date: Thursday, April 29, 1999 6:17 PM Subject: 16F877 delay (?) >Hi there, > >the Hungarian distributor of Microchip has implicitly stated they can >deliver 16F877 earliest at June. Can someone share his/her experiences? >I'm waiting for this chip in a very intensive way because of I'm fed up >with the UV-erase - reprogram - test cycle. > >Thank you in advance >Imre >

1999\05\18@101631 by Scott Dattalo

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On Tue, 18 May 1999, Russell McMahon wrote: > They also discussed the coming PIC 18xxx family - presumably they > have been doing this at other meeting recently. If not then I suppose > I will be inundated. I haven't looked at the MChip website lately - > is information on this new line generally available? This is going to be a really neat part. There is no information about on the Web site just yet. My understanding is that the official data sheet will be released in July along with the official announcement of the part. I asked for a preliminary data sheet (after the FAE at the mchip seminar said that they're available) but was denied the request (after the mchip internal guys said no way til July). Bummer. But as a consolation, I did get a copy of the instruction set details (e.g. opcodes). gpasm will hopefully have support for the 18Cxxx hopefully soon after the part is officially announced. BTW, If you ask someone at mchip, maybe you can get the instruction set too. Please don't ask me because I can't give it to you... Scott

1999\05\18@113121 by Darrel Johansen

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Scott wrote: >... BTW, If you ask someone at mchip, maybe you can get the >instruction set too. Please don't ask me because I >can't give it to you... You might want to check out the new MPASM User's Guide or the MPASM Quick Reference Card... ;-! Darrel

1999\05\19@032326 by g.daniel.invent.design

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Darrel Johansen wrote: > > Scott wrote: > > >... BTW, If you ask someone at mchip, maybe you can get the > >instruction set too. Please don't ask me because I > >can't give it to you... > > You might want to check out the new MPASM User's Guide or the MPASM > Quick Reference Card... ;-! > > Darrel I guess Scott D is wearing the uChip logo as a tatoo on his ***

1999\05\19@085316 by Andres Tarzia

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The "9915" code refers to "Year 99", "Week 15" that is, near the end of April. I don't know about the "B3P" suffix. Regards, Andres Tarzia Technology Consultant, SMART S.A. e-mail: .....atarziaKILLspam@spam@smart.com.ar -----Original Message----- From: Russell McMahon [apptechKILLspamCLEAR.NET.NZ] Sent: Tuesday, May 18, 1999 04:39 To: .....PICLISTKILLspam.....MITVMA.MIT.EDU Subject: i - 16F877 samples ii - PIC 18xxx info [...content deleted...] Code on top is 9915B3P - how old is that (where'd I put that recent release re new date codes :-)) [...content deleted...] Russell McMahon

1999\05\19@163711 by roblid

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I did notice Arrow.com (US- site) had a price listed for 877 but no availability. Depending on speed etc around US $11-13. Thats about $23NZ which makes the AVR look damn attractive, even with new programmer etc. I was quoted about $4.70NZ for the 2313.

1999\05\21@123131 by Andy Kunz

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At 09:55 AM 5/19/99 -0300, you wrote: >The "9915" code refers to "Year 99", "Week 15" that is, near the end of >April. >I don't know about the "B3P" suffix. Rev level of silicon in Plastic case. I have a B2 rev, so you're one up on me. I'm surprised you got a chip w/o docs. Mine came with them. Andy ================================================================== Montana Design Tech Support - http://www.montanadesign.com ==================================================================

1999\05\24@043214 by Tom Handley

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Andy, as I understand things, you sent Carl (Carmacon) one of your first samples? And, those chips had a problem with EEPROM? I contacted Carl about the current status and I still have the rev B022 firmware. He was going to send rev B024 but I've been waiting for 16F877 samples to do some beta testing with the current firmware. I did not put in a sample request until four weeks ago, hoping I would get current silicon. My rep warned me that they were in short supply. They usually send samples within a week. I did get the data book. What Carmacon firmware revision are you using? - Tom At 11:45 AM 5/21/99 -0400, Andy Kunz wrote: {Quote hidden}>At 09:55 AM 5/19/99 -0300, you wrote: >>The "9915" code refers to "Year 99", "Week 15" that is, near the end of >>April. >>I don't know about the "B3P" suffix. > >Rev level of silicon in Plastic case. > >I have a B2 rev, so you're one up on me. > >I'm surprised you got a chip w/o docs. Mine came with them. > >Andy > >================================================================== > Montana Design Tech Support - http://www.montanadesign.com >==================================================================

1999\05\24@105910 by Andy Kunz

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> Andy, as I understand things, you sent Carl (Carmacon) one of your >first samples? And, those chips had a problem with EEPROM? I contacted Yes, and I have it back now. >samples within a week. I did get the data book. What Carmacon firmware >revision are you using? B024 with 1.25f driver. That might not be the latest driver - I use a variety of machines and sometimes things don't get distributed to all them properly. Andy ================================================================== Montana Design Tech Support - http://www.montanadesign.com ==================================================================

1999\05\25@104745 by Tom Handley

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Andy, thanks. My rep says the samples should be here soon but no idea on what rev... I'll ask Carl to send the B024 update. Did you have any problems with the 16F8xx and B024 firmware other than EEPROM? The reason I've held back on both the samples and the firmware update is that I need to move some 16C77 code to the 16F877 and it's 12-Bit A/Ds for use in a DAQ system and I want to store calibration data in EEPROM. It looks like I'll have plenty of time for my garden until I get my `paws' on updated silicon... BTW, have you used the 16F877's 12-Bit A/D? I'm replacing an existing design that used an external 12-Bit A/D and a precision 4.096V reference with a pot to provide a 1mv resolution. I'm tempted to go back to a MAX186 A/D with it's internal reference and the data book `reference adjust' circuit. I used that in my weather station several years ago and it's been very accurate. That's my concern with the 16F877. Given a precision reference, I wonder if I can get a similar accuracy. However, it would be nice to eliminate the pot, external A/D, and allow the user to enter calibration data to EEPROM. - Tom At 10:55 AM 5/24/99 -0400, Andy Kunz wrote: {Quote hidden}>> Andy, as I understand things, you sent Carl (Carmacon) one of your >>first samples? And, those chips had a problem with EEPROM? I contacted > >Yes, and I have it back now. > >>samples within a week. I did get the data book. What Carmacon firmware >>revision are you using? > >B024 with 1.25f driver. That might not be the latest driver - I use a >variety of machines and sometimes things don't get distributed to all them >properly. > >Andy >================================================================== > Montana Design Tech Support - http://www.montanadesign.com >==================================================================

1999\05\25@122355 by Andy Kunz

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>have any problems with the 16F8xx and B024 firmware other than EEPROM? The version of chip I have has known problems writing. I have several copies of the 877 programming spec also, with different timings <G>. The current version uses, I believe, '84 mode to burn the 877. SLow but at least it meets all the varieties of spec from Mchip. > BTW, have you used the 16F877's 12-Bit A/D? I'm replacing an existing Only in 8-bit mode (that is, shifted so the LSbits are somewhere else and don't get used. This is the default mode, btw). >very accurate. That's my concern with the 16F877. Given a precision >reference, I wonder if I can get a similar accuracy. However, it would be I would try it, but not get my hopes up. They've never been too good on the analog side of things. Andy ================================================================== Montana Design Tech Support - http://www.montanadesign.com ==================================================================

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