There was also the short lived XPLA2 PZ/XCR3320,3960 (Ph/X) SRAM CPLD
family, which had to be configured from an external memory... just
another exception which confirms the rule.
ftp://ftp.xilinx.com/pub/coolpld/isp/960_conf.pdf
The even older intel FLEXlogic, bought by Altera, and rebranded
Not true, the configuration is loaded from EEPROM to RAM on power up.
Bruce
Azelio Boriani wrote:
By preload I think you mean the configuration step of the logic. It seems
that the Xilinx one stops the clock after the configuration is done. Anyway
using small EEPROM based CPLDs you have no
On Fri, 27 Apr 2012 12:03:20 -0700, Jerry Mulchin wrote:
You might want to take a look at the Atmel XMEGA parts. Far more
capabilities than the ATMega parts.
Watch out .
If using an Xmega make sure to select the U ... Usb ones.
Most of the non U parts have an errata list longer than the
configuration is loaded from EEPROM to RAM on power up
For every kind of logic? Even for the simplest XC3000 series (and the
Altera equivalent EPM3000 series) small EEPROM CPLD?
On Sat, Apr 28, 2012 at 9:04 AM, cfo xne...@luna.dyndns.dk wrote:
On Fri, 27 Apr 2012 12:03:20 -0700, Jerry Mulchin
I guess you wanted to refer to the old XPLA PZ3k/5k CoolRunner series
bought from Philips, renamed XCR3k/5k, and later enhanced to
XPLA3/XCR3kXL, not the antique FPGA family XC3k...
(C)PLDs don't need an external memory for configuration storing, it's
internal.
There are also some Lattice,
of precise time and frequency measurement
time-nuts@febo.com
Subject: Re: [time-nuts] PICTIC II ready-made?
FPGA with internal flash memory to boot from, yes, but I think that small
CPLD haven't to boot anything: they should have the interconnection array
associated with the EEPROM cell
Yes, I should have been more specific.
The details about the state machine clock behaviour aren't on the
datasheet and were obtained by asking Xilinx.
The reason for using CMOS RAM to controll the CPLD interconnections is
to reduce the static power consumption well below that possible when
On 4/28/12 12:10 PM, shali...@gmail.com wrote:
I have not studied CPLDs but Actel has the only true Flash based FPGAs. The
flash cells directly control the FPGA fabric. As such, they are mostly immune
to Single Event Upset that plagues just about any other FPGA technology, and
there is no
@febo.com
Reply-To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Subject: Re: [time-nuts] PICTIC II ready-made?
On 4/28/12 12:10 PM, shali...@gmail.com wrote:
I have not studied CPLDs but Actel has the only true Flash based FPGAs. The
flash cells directly control
On 4/26/12 10:46 PM, cfo wrote:
On Thu, 26 Apr 2012 14:58:26 -0700, Jim Lux wrote:
On 4/26/12 1:24 PM, Hal Murray wrote:
albertson.ch...@gmail.com said:
2) The IDE is written in Java and is portable. It is truly identical
on all platforms. Yes it uses gcc but the end user never has to
On Wed, 25 Apr 2012 19:17:43 -0300
Daniel Mendes dmend...@gmail.com wrote:
About replacing the 74ACT175... there´s a company called Potato Semi
(well.. they make chips, right?) whose sole business is to make damn
fast 74 logic. Their chips can be bought at ebay in small quantities.
Look at
On Fri, 27 Apr 2012 06:21:10 -0700, Jim Lux wrote:
It uses a 100% standard avr-gcc toolchain as backend , and just
creates the commandline call for using that.
So avr-gcc , avr-as , avr-ar , avr-objcopy etc. are used behind the
curtains.
Fascinating..
Are avr-* also java? Or are there
On Fri, 27 Apr 2012 15:52:33 +0200, Attila Kinali att...@kinali.ch
wrote:
On Wed, 25 Apr 2012 19:17:43 -0300
Daniel Mendes dmend...@gmail.com wrote:
About replacing the 74ACT175... there´s a company called Potato Semi
(well.. they make chips, right?) whose sole business is to make damn
fast
On Wed, 25 Apr 2012 23:30:45 -0500
David davidwh...@gmail.com wrote:
If you add a second lower current source or sink, then you can get
away with a LM311 class comparator and one fast timer channel in the
microcontroller. The input pulse width charges the capacitor and the
timer counts how
The Altera Max 3000A as I mentioned before will do all TTL devices, it has
an extensive library easy to use and very cheap. All That at 200 MHz. I
became a believer and others I introduced to it love it to. In an hour from
downloading the free software you can have your first design. If I
...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Attila Kinali
Sent: Friday, April 27, 2012 10:30 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] PICTIC II ready-made?
On Wed, 25 Apr 2012 23:30:45 -0500
David davidwh...@gmail.com wrote:
If you add a second
On Fri, 27 Apr 2012 16:30:11 +0200, Attila Kinali att...@kinali.ch
wrote:
On Wed, 25 Apr 2012 23:30:45 -0500
David davidwh...@gmail.com wrote:
If you add a second lower current source or sink, then you can get
away with a LM311 class comparator and one fast timer channel in the
I have been looking at CPLD and FPGA designs for aggregating the logic
required but keep running up against their lack of jitter
specifications for asynchronous applications. Is the part and
development cost worth replacing a handful of discrete logic when the
CPLD or FPGA is dedicated to such a
Contact me off list and I will be glad to work with you. Test board etc.
Bert Kehren
In a message dated 4/27/2012 2:36:45 P.M. Eastern Daylight Time,
davidwh...@gmail.com writes:
I have been looking at CPLD and FPGA designs for aggregating the logic
required but keep running up against
You might want to take a look at the Atmel XMEGA parts. Far more capabilities
than the ATMega parts.
Brief description:
Atmel AVR CPU - Clock speed to 32MHz
Memories
DMAC - Direct memory access controller
Event system
System clock and clock options
Power management and sleep modes
The Wilkinson TDC (dual slope) has been successfully used for decades in
nuclear instrumentation.
One problem is in switching the discharge current on and off
sufficiently quickly.
This can be largely circumvented by having it on all the time.
One drawback is the slow conversion speed (100us
By preload I think you mean the configuration step of the logic. It seems
that the Xilinx one stops the clock after the configuration is done. Anyway
using small EEPROM based CPLDs you have no clock at all: there is no
configuration to load.
On Fri, Apr 27, 2012 at 10:01 PM, Bruce Griffiths
On Sat, 28 Apr 2012 08:01:43 +1200, Bruce Griffiths
bruce.griffi...@xtra.co.nz wrote:
The Wilkinson TDC (dual slope) has been successfully used for decades in
nuclear instrumentation.
One problem is in switching the discharge current on and off
sufficiently quickly.
This can be largely
On Fri, 27 Apr 2012 22:13:55 +0200, Azelio Boriani
azelio.bori...@screen.it wrote:
By preload I think you mean the configuration step of the logic. It seems
that the Xilinx one stops the clock after the configuration is done. Anyway
using small EEPROM based CPLDs you have no clock at all: there
FPGA with internal flash memory to boot from, yes, but I think that small
CPLD haven't to boot anything: they should have the interconnection array
associated with the EEPROM cell array.
On Fri, Apr 27, 2012 at 11:52 PM, David davidwh...@gmail.com wrote:
On Fri, 27 Apr 2012 22:13:55 +0200,
It uses a 100% standard avr-gcc toolchain as backend , and just creates
the commandline call for using that.
So avr-gcc , avr-as , avr-ar , avr-objcopy etc. are used behind the
curtains.
Fascinating..
Are avr-* also java? Or are there just binary versions that run on all
platforms?
correct
Bert Kehren
In a message dated 4/27/2012 6:58:32 P.M. Eastern Daylight Time,
azelio.bori...@screen.it writes:
FPGA with internal flash memory to boot from, yes, but I think that small
CPLD haven't to boot anything: they should have the interconnection array
associated with the
On 26 April 2012 01:27, Chris Albertson albertson.ch...@gmail.com wrote:
http://en.wikipedia.org/wiki/Raspberry_Pi
I just read the above page. The Raspberry contains close source drivers
and binary blob graphics firmware. That is an 100% deal killer.
It's unfortunate that it makes use of
Has any one considered asking Richard. As far as logic is concerned a 200
MHz Altera MAX 3000A makes a perfect substitute at a cost of $ 2.50 that
includes a very solderable socket. Works
Bert Kehren
In a message dated 4/25/2012 3:16:51 P.M. Eastern Daylight Time,
me off list for more information...
Thanks
Dan
On 4/25/2012 2:42 PM, time-nuts-requ...@febo.com wrote:
Message: 1
Date: Wed, 25 Apr 2012 12:44:30 -0500
From: Stanleytimen...@n4iqt.com
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Subject: Re: [time-nuts
25, 2012 7:39 PM
Subject: Re: [time-nuts] PICTIC II ready-made?
On 25 April 2012 19:09, Randy D. Hunt randy_hunt...@yahoo.com wrote:
Then there is also the matter of surface mount components. Some people
my
not physically be able to work with them, learning to solder or not. I
am
rapidly
albertson.ch...@gmail.com said:
2) The IDE is written in Java and is portable. It is truly identical on all
platforms. Yes it uses gcc but the end user never has to deal with gcc or
even know what gcc is. Same with saving your code, hit just puts it some
place and keeps track of it
Do I
On 4/26/12 1:24 PM, Hal Murray wrote:
albertson.ch...@gmail.com said:
2) The IDE is written in Java and is portable. It is truly identical on all
platforms. Yes it uses gcc but the end user never has to deal with gcc or
even know what gcc is. Same with saving your code, hit just puts it
On Thu, Apr 26, 2012 at 1:24 PM, Hal Murray hmur...@megapathdsl.net wrote:
albertson.ch...@gmail.com said:
2) The IDE is written in Java and is portable. It is truly identical on
all
platforms. Yes it uses gcc but the end user never has to deal with gcc
or
even know what gcc is. Same
On Thu, Apr 26, 2012 at 12:20 PM, Don Latham d...@montana.com wrote:
OK, Chris, I'll bite. What the heck is a tool chain?
It is the series (or chain) of software tools you need to use. Text
editor, compiler, linker and whatever you need to program the chip and then
maybe a debugger and maybe
Hal Murray hmurray@... writes:
albertson.chris@... said:
2) The IDE is written in Java and is portable. It is truly identical on
all
platforms. Yes it uses gcc but the end user never has to deal with gcc or
even know what gcc is. Same with saving your code, hit just puts it some
On 27 Apr, 2012, at 02:57 , Chris Albertson wrote:
Closed source drivers and binary blob firmware.I'd have nothing to do
with a project that includes either of those. I'd require a open source
platforms with a 100% free tool chain. Also, it is a bit of overkill
after all a bare PIC
On Thu, 26 Apr 2012 14:58:26 -0700, Jim Lux wrote:
On 4/26/12 1:24 PM, Hal Murray wrote:
albertson.ch...@gmail.com said:
2) The IDE is written in Java and is portable. It is truly identical
on all platforms. Yes it uses gcc but the end user never has to deal
with gcc or even know what gcc
On Wed, 25 Apr 2012 02:01:36 + (UTC)
Andrew Rodland and...@cleverdomain.org wrote:
Would anyone be willing to sell (or loan for an extended period) one or two
ready-to-go PICTIC IIs within the United States? I realize this may be rude
to ask since it's a hobby project, but what can I say?
I agree, nevertheless let me add: because it is a hobby project it is good
also starting to learn how to use the soldering iron.
On Wed, Apr 25, 2012 at 2:59 PM, Attila Kinali att...@kinali.ch wrote:
On Wed, 25 Apr 2012 02:01:36 + (UTC)
Andrew Rodland and...@cleverdomain.org wrote:
On Wed, 25 Apr 2012 15:24:50 +0200
Azelio Boriani azelio.bori...@screen.it wrote:
I agree, nevertheless let me add: because it is a hobby project it is good
also starting to learn how to use the soldering iron.
But for that, you need someone who shows you how to solder.
You can learn it
Yes, better have someone who can help but nothing should prevent you from
learning something.
On Wed, Apr 25, 2012 at 4:44 PM, Attila Kinali att...@kinali.ch wrote:
On Wed, 25 Apr 2012 15:24:50 +0200
Azelio Boriani azelio.bori...@screen.it wrote:
I agree, nevertheless let me add: because it
On Wed, Apr 25, 2012 at 5:50 AM, Bill Dailey docdai...@gmail.com wrote:
I have wondered the same thing.
It might be time for a group project to design a Pictic III that uses
parts that are readily available. Today I'd build it around an Arduino
rather than a PIC even if the cost is more.
Chris: I concur. Arduino base would allow simple extension to 'net
control as well.
Don
Chris Albertson
It might be time for a group project to design a Pictic III that uses
parts that are readily available. Today I'd build it around an Arduino
rather than a PIC even if the cost is more.
I forgot to add that a simple redrafting of the II as an Arduino shield
with appropriate chips and chip passives would accomplish the desired
end without losing the very careful engineering and testing that has
already been done?
Would be nice to have a way to change caps without soldering as
at time
:-(
Stanley
- Original Message -
From: Don Latham d...@montana.com
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Wednesday, April 25, 2012 11:37 AM
Subject: Re: [time-nuts] PICTIC II ready-made?
I forgot to add that a simple redrafting
On 4/25/2012 7:44 AM, Attila Kinali wrote:
On Wed, 25 Apr 2012 15:24:50 +0200
Azelio Borianiazelio.bori...@screen.it wrote:
I agree, nevertheless let me add: because it is a hobby project it is good
also starting to learn how to use the soldering iron.
But for that, you need someone who
On Wed, Apr 25, 2012 at 9:37 AM, Don Latham d...@montana.com wrote:
I forgot to add that a simple redrafting of the II as an Arduino shield
with appropriate chips and chip passives would accomplish the desired
end without losing the very careful engineering and testing that has
already been
On Wed, Apr 25, 2012 at 11:09 AM, Randy D. Hunt randy_hunt...@yahoo.comwrote:
Then there is also the matter of surface mount components. Some people my
not physically be able to work with them, learning to solder or not. I am
rapidly joining that group be cause of my vision.
Get yourself a
On 25 April 2012 19:09, Randy D. Hunt randy_hunt...@yahoo.com wrote:
Then there is also the matter of surface mount components. Some people my
not physically be able to work with them, learning to solder or not. I am
rapidly joining that group be cause of my vision.
Since Arduino has been
On Wed, Apr 25, 2012 at 11:39 AM, Andrew Back and...@carrierdetect.comwrote:
On 25 April 2012 19:09, Randy D. Hunt randy_hunt...@yahoo.com wrote:
Then there is also the matter of surface mount components. Some people
my
not physically be able to work with them, learning to solder or not.
On Wed, 25 Apr 2012 08:45:52 -0700
Chris Albertson albertson.ch...@gmail.com wrote:
On Wed, Apr 25, 2012 at 5:50 AM, Bill Dailey docdai...@gmail.com wrote:
I have wondered the same thing.
It might be time for a group project to design a Pictic III that uses
parts that are readily
Chris Albertson wrote:
On Wed, Apr 25, 2012 at 9:37 AM, Don Lathamd...@montana.com wrote:
I forgot to add that a simple redrafting of the II as an Arduino shield
with appropriate chips and chip passives would accomplish the desired
end without losing the very careful engineering and
limited space the kitting process takes several hours to do them one at time
:-(
Stanley
- Original Message - From: Don Latham d...@montana.com
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Wednesday, April 25, 2012 11:37 AM
Subject: Re: [time-nuts
Attila Kinali wrote:
Hi Bruce,
On Thu, 26 Apr 2012 07:15:41 +1200
Bruce Griffithsbruce.griffi...@xtra.co.nz wrote:
If a suitable ADC is used the interpolator can be simplified
considerably whilst improving its performance.
Could you tell a little bit more about what a suitable ADC
On Thu, 26 Apr 2012 08:00:17 +1200
Bruce Griffiths bruce.griffi...@xtra.co.nz wrote:
If a capacitive input charge redistribution ADC is used the interpolator
output capacitor can be directly connected to it.
This eliminates the output buffer amp with its unknown settling time as
well as the
About replacing the 74ACT175... there´s a company called Potato Semi
(well.. they make chips, right?) whose sole business is to make damn
fast 74 logic. Their chips can be bought at ebay in small quantities.
Look at this 600MHz D flip flop:
On Wed, Apr 25, 2012 at 12:11 PM, Attila Kinali att...@kinali.ch wrote:
On Wed, 25 Apr 2012 08:45:52 -0700
Chris Albertson albertson.ch...@gmail.com wrote:
On Wed, Apr 25, 2012 at 5:50 AM, Bill Dailey docdai...@gmail.com
wrote:
I have wondered the same thing.
It might be time
Chris,
Your undying devotion to the Arduino is laudable. However, the point that i
think you are missing is such functionality is also available on other platforms
with the same amount of ease and support. If you take someone who has never
seen, touched nor had any knowledge of any computing
Message -
From: Andrew Back and...@carrierdetect.com
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Wednesday, April 25, 2012 7:39 PM
Subject: Re: [time-nuts] PICTIC II ready-made?
On 25 April 2012 19:09, Randy D. Hunt randy_hunt...@yahoo.com wrote
On Wed, Apr 25, 2012 at 4:24 PM, WB6BNQ wb6...@cox.net wrote:
Chris,
Your undying devotion to the Arduino is laudable. However, the point that
i
think you are missing is such functionality is also available on other
platforms
with the same amount of ease and support. If you take someone
two thumbs up for Radio Shack - they sure have their problems but they
are all we have in a lot of places. with the new Velleman and Arduino
and Basic Stamp kits, they are clearly trying. they have a ways to go,
but I try to vote with my $$$ a little bit. Cliff K6CLS
On 2012-04-25 16:41,
On Wed, 25 Apr 2012 11:13:42 -0700, Chris Albertson
albertson.ch...@gmail.com wrote:
On Wed, Apr 25, 2012 at 9:37 AM, Don Latham d...@montana.com wrote:
I forgot to add that a simple redrafting of the II as an Arduino shield
with appropriate chips and chip passives would accomplish the desired
On Wed, 25 Apr 2012 21:26:25 +0200, Attila Kinali att...@kinali.ch
wrote:
Hi Bruce,
On Thu, 26 Apr 2012 07:15:41 +1200
Bruce Griffiths bruce.griffi...@xtra.co.nz wrote:
If a suitable ADC is used the interpolator can be simplified
considerably whilst improving its performance.
Could you tell
Yes, I was thinking of trying a PICTIC II partial redesign with a Xilinx
CPLD, using other type of fast turn off diodes and so on.
On Tue, Feb 7, 2012 at 8:28 AM, Attila Kinali att...@kinali.ch wrote:
On Sun, 5 Feb 2012 19:55:36 -0900 (AKST)
Richard H McCorkle mccor...@ptialaska.net wrote:
att...@kinali.ch said:
BTW: does anyone know how these days low cost FPGAs perform in terms of
jitter? (the data sheets are kind of scarce in that regard). And how do they
compare to state of the art ECL logic?
Generally, not good.
The general problem is that they have a lot of logic and a
To enhance the PICTIC II performance can step recovery diodes be used?
Maybe the fast turn off can boost the switching capabilities of the
interpolator for best resolution...
On Tue, Feb 7, 2012 at 12:35 PM, Hal Murray hmur...@megapathdsl.net wrote:
att...@kinali.ch said:
BTW: does anyone
On Tue, 7 Feb 2012 08:28:14 +0100, Attila Kinali att...@kinali.ch
wrote:
On Sun, 5 Feb 2012 19:55:36 -0900 (AKST)
Richard H McCorkle mccor...@ptialaska.net wrote:
While using a faster timebase or higher interpolator gain increases
the resolution that doesn?t imply the accuracy will also
Step recovery diodes turn off fast but have a relatively long storage
time. The fastest switched current integrators use schottky diodes.
On Tue, 7 Feb 2012 14:06:55 +0100, Azelio Boriani
azelio.bori...@screen.it wrote:
To enhance the PICTIC II performance can step recovery diodes be used?
On Sun, 5 Feb 2012 19:55:36 -0900 (AKST)
Richard H McCorkle mccor...@ptialaska.net wrote:
While using a faster timebase or higher interpolator gain increases
the resolution that doesnt imply the accuracy will also increase. The
PICTIC II uses CMOS logic with propagation delays that vary
John,
I appreciate your help. Among other things, I'm not sure what to do
with the adjustment pots after I finish building the board.
Speaking of software, I was wondering if anyone had written a program
for controlling the PICTIC II and logging the data. Using a serial
terminal can be tedious.
John,
Would using the 50 MHz XO option be something I should consider?
Joe Gray
W5JG
___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-
boun...@febo.com] On Behalf Of Joseph Gray
Sent: Sunday, February 05, 2012 11:04 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] PICTIC II questions
John,
Would using
On Sun, Feb 5, 2012 at 12:12 PM, John Miles jmi...@pop.net wrote:
We were also talking about
some possible GUI ideas for configuration and data acquisition, but I was
ramping up a larger project at the time and never had time to explore them
further.
Before anything like a GUI, I think I'm
I appreciate your help. Among other things, I'm not sure what to do
with the adjustment pots after I finish building the board.
Set up to measure an interval that is more or less ramdon or granteed to
cover the full range of the interpters.
The idea is to adjust each pair the stop and start
I know the resolution can be enhanced by swapping out some parts, but it's
been too long to recall the details.
On the schematic is a list of alternate XOs. For 50 MHz, the 1000 pf
cap is changed to 180 pf. This is stated to give 25 ps maximum
resolution. If this simple change is all that is
Set up to measure an interval that is more or less ramdon or granteed
to cover the full range of the interpters.
The idea is to adjust each pair the stop and start sides to cover the full
range of possible of numbers without overlap or loss of resolution.
What source would I use to
Fellow Time Nuts,
The PICTIC II is a spin-off of a low cost front end developed for a
GPSDO to compare the oscillator to GPS 1PPS over very short ( 20us)
time intervals. In that application all that was required was 1ns
TIC resolution to match the resolution of the GPS sawtooth correction
to get
Last call for PICTIC II chips. I'm ordering the chips this coming weekend
and if you want them, get em ordered ASAP. See the email below for
details. This will very possibly be the last time I make these available
unless there is sufficient interest in the future.
Also, to those that ordered
Robert: Do you have two left?
Thanks
Don
Robert Darlington
Hi all,
Just a reminder that I'm going to place an order for the PICTIC PIC chips
tonight for those in the USA that want them. The price is $10.00 for the
first one, $2.50 for each additional, including shipping and programming.
1
Please, for two pieces, how do I pay , for France ?
Thanks
Bernard.
- Original Message -
From: Stanley Reynolds stanley_reyno...@yahoo.com
To: time-nuts@febo.com
Sent: Wednesday, July 21, 2010 12:08 AM
Subject: [time-nuts] Pictic II boards are here !
Paypal to
Board received 7/26/10, nice looking board, thanks for the order.
Regards,
Bob Martinson
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Stanley Reynolds
Sent: Tuesday, July 20, 2010 6:08 PM
To: time-nuts@febo.com
Subject: [time-nuts]
Can someone please send me information on ordering programmed PICs?
It seems I arrived at the Pictic II party a bit late (I really need a
better clock) and digging back through all the messages has me lost.
I've only recently joined time-nuts and searching archives isn't easy.
Thank you so
Morning Stanley,
Good news! As I mentioned before, I am happy to act as a UK Post
Office if youl'd like to send all the UK-bound boards to me. I am
collaborating with Ian Muir in Wales (Time Nut member Gonzo) on this
project, so between us we would like five boards please. If you can
let
measurement time-nuts@febo.com
Sent: Wed, July 21, 2010 3:39:54 AM
Subject: Re: [time-nuts] Pictic II boards are here !
Morning Stanley,
Good news! As I mentioned before, I am happy to act as a UK Post
Office if youl'd like to send all the UK-bound boards to me. I am
collaborating with Ian Muir
So, do we now have available, an up to date (a moving target with Mouser, I
acknowledge) parts list and stock numbers for correct resistors(trim),
FETs, and ICs?
Lester B Veenstra MØYCM K1YCM
les...@veenstras.com
m0...@veenstras.com
k1...@veenstras.com
US Postal Address:
PSC 45 Box 781
APO
Picture of board here:
www.n4iqt.com/stanley_reynolds/picticii/Picticboard001.JPG
- Original Message
From: Stanley Reynolds stanley_reyno...@yahoo.com
To: time-nuts@febo.com
Sent: Tue, July 20, 2010 5:08:22 PM
Subject: [time-nuts] Pictic II boards are here !
Paypal to
Corrected link to picture:
www.n4iqt.com/picticii/Picticboard001.JPG
- Original Message
From: Stanley Reynolds stanley_reyno...@yahoo.com
To: Discussion of precise time and frequency measurement time-nuts@febo.com
Sent: Tue, July 20, 2010 5:26:44 PM
Subject: Re: [time-nuts] Pictic
Cool board, Stanley. The PIC chips are in on my end and the plastic
protective tubes I ordered came in today. I got these for mailing them out
to the various folks that wanted a chip.
Guys, I'm going to try to get them out this week. As I mentioned before,
I'm leaving for Arizona this coming
All of the PICs I ordered came in on Friday (Mouser ships FAST!) so it's a
matter of programming them and getting them out this week. Just an FYI
guys, I'm leaving for southern Arizona for three weeks for work. If I don't
get them out this week I will do my very best to get them out while I'm on
The TS272CN is an acceptable substitute for the TS272ACN in the
PICTIC II but as noted has a higher input offset voltage. This
can be compensated for in the second stage by adjustment of
the offset trimmer. I selected premium parts for temperature
stability in the application. Sorry the
Yes, they look like they should work.
I have a few of item #380243138677 that I bought a while back. As long
as C9 is low enough or is bent out of the way they should work.
Item #330436763629 is interesting. The trace lengths will be shorter
than the above adapters.
Item # 250661866947
stanley_reyno...@yahoo.com said:
No, the ebay item 180460919851 looks correct, data sheet for 74ac175
has the same pin out for all packages
I agree that that one should work.
Anybody interested in this mess who hasn't yet looked at it should check out
the back half of that ebay page in case
I see that the 74AC175 in the Mouser project has now morphed to a
75AC*T*175. Was that substitution intentional? I think it should be
okay, just wanted to check. (What? Paranoid? Who said that?!)
Ed
Richard H McCorkle wrote:
Time-Nuts,
When the PICTIC was first developed a number of
Hi
There's been a thread on the 175. It's both the wrong logic level and package.
The good news is that you can buy it. The other parts are obsolete.
Bob
Sent from my iPhone
On Jul 10, 2010, at 4:56 PM, Ed Palmer ed_pal...@sasktel.net wrote:
I see that the 74AC175 in the Mouser project has
Hello,
I has been reviewing some info about PIC programmers, since I agree with
other list members that a cheap PIC programmer is more convenient than
sending PICs forth and back, taking in account that probably new
versions of the firmware will appear soon.
My main programmer is a China made
Hi guys,
For those of you that are having me pick up the PIC and program it and send
it out,please feel free to go through Ignacio if you want or cancel the
order if you want to program them yourself. I haven't bought anything yet
so it's definitely not a problem on my end if you'd rather get a
I was thinking of using a 74F175 not as fast uses more power but I have it.
Stanley
snip
7) The 74AC175 is un-obtanium in a PDIP package the project shows a 74ACT SOIC
version, you'll have to kludge it on to the board Logic levels on the clock may
impact accuracy (but probably won't).
snip
Hi
The 74F175 is in stock at Mouser. I'll let Rich decide if it's good enough.
Bob
Sent from my iPhone
On Jul 9, 2010, at 5:16 PM, Stanley Reynolds stanley_reyno...@yahoo.com wrote:
I was thinking of using a 74F175 not as fast uses more power but I have it.
Stanley
snip
7) The
Time-Nuts,
When the PICTIC was first developed a number of front-end designs were
evaluated with the 74AC175 providing the best characteristics, size,
and speed in a DIP format. When the PICTIC was released in 2008 the
74AC175PC was in full production, but by the time the PICTIC II with
the diode
1 - 100 of 175 matches
Mail list logo
