I gather that the Microcrystal MS3V-T1R was used here:
PDF datasheet at:
http://www.microcrystal.com/CMSPages/GetFile.aspx?nodeguid!218980-0886-41a2-87fc-6b04e14f0226
Anyway, these appear to come in 7pF, 9pF, and 12.5pF
varieties. My natural assumption, given that the MSP430's
used in the MSP-EXP430G2 kit come out of reset configured to
use 6pF on LFXT1, that TI would have selected the 7pF
variety. That assumes, of course, that Microcrystal actually
wanted to provide TI with such a thing for 32.768kHz, when
participating in this. Does anyone know, off-hand, which of
the supposed optional parts were actually used in the kits?
I haven't yet done testing, but I assume it works fine with
the MSP430 in its default 6pF mode. But it may also work
just fine at all of 5.5pF, 8.5pF, and 11pF, though not quite
optimally for the design frequency.
Mostly, I'm just curious if this has been checked out by
anyone.
Thanks,
Jon
MSP-EXP430G2 "LaunchPad" -- the crystal
Started by ●July 18, 2010
Reply by ●July 18, 20102010-07-18
Any marking on the little plastic bag?
The the load capacitance is not critical. I will check this when (and if) I get mine.
--- In m..., Jon Kirwan wrote:
>
> I gather that the Microcrystal MS3V-T1R was used here:
>
> PDF datasheet at:
> http://www.microcrystal.com/CMSPages/GetFile.aspx?nodeguid!218980-0886-41a2-87fc-6b04e14f0226
>
> Anyway, these appear to come in 7pF, 9pF, and 12.5pF
> varieties. My natural assumption, given that the MSP430's
> used in the MSP-EXP430G2 kit come out of reset configured to
> use 6pF on LFXT1, that TI would have selected the 7pF
> variety. That assumes, of course, that Microcrystal actually
> wanted to provide TI with such a thing for 32.768kHz, when
> participating in this. Does anyone know, off-hand, which of
> the supposed optional parts were actually used in the kits?
>
> I haven't yet done testing, but I assume it works fine with
> the MSP430 in its default 6pF mode. But it may also work
> just fine at all of 5.5pF, 8.5pF, and 11pF, though not quite
> optimally for the design frequency.
>
> Mostly, I'm just curious if this has been checked out by
> anyone.
>
> Thanks,
> Jon
>
The the load capacitance is not critical. I will check this when (and if) I get mine.
--- In m..., Jon Kirwan wrote:
>
> I gather that the Microcrystal MS3V-T1R was used here:
>
> PDF datasheet at:
> http://www.microcrystal.com/CMSPages/GetFile.aspx?nodeguid!218980-0886-41a2-87fc-6b04e14f0226
>
> Anyway, these appear to come in 7pF, 9pF, and 12.5pF
> varieties. My natural assumption, given that the MSP430's
> used in the MSP-EXP430G2 kit come out of reset configured to
> use 6pF on LFXT1, that TI would have selected the 7pF
> variety. That assumes, of course, that Microcrystal actually
> wanted to provide TI with such a thing for 32.768kHz, when
> participating in this. Does anyone know, off-hand, which of
> the supposed optional parts were actually used in the kits?
>
> I haven't yet done testing, but I assume it works fine with
> the MSP430 in its default 6pF mode. But it may also work
> just fine at all of 5.5pF, 8.5pF, and 11pF, though not quite
> optimally for the design frequency.
>
> Mostly, I'm just curious if this has been checked out by
> anyone.
>
> Thanks,
> Jon
>
Reply by ●July 18, 20102010-07-18
On Sun, 18 Jul 2010 17:44:55 -0000, ocy wrote:
>Any marking on the little plastic bag?
No markings, at all. It's a tiny sealed conductive bag with
a tiny 16mm tape that includes three slots, only one filled.
>The the load capacitance is not critical. I will check this
I didn't figure it was critical for general operation. I
just felt that since they are characterized for their rated
value I should know what that value is and use it for better
initial accuracy.
In any case, I was curious.
I'm considering putting BASIC on the chip and am currently
thinking about strategies and implementation costs to see if
there is hope. With only 1k word to work with, this will be
'tricky,' if possible at all. But there are some great folks
who have come before me and I've learned a little, so I might
have a shot. The 128 bytes of RAM is acceptable.
>when (and if) I get mine.
And here I have 9 of them and am already giving them away. I
feel guilty. ;)
Jon
>Any marking on the little plastic bag?
No markings, at all. It's a tiny sealed conductive bag with
a tiny 16mm tape that includes three slots, only one filled.
>The the load capacitance is not critical. I will check this
I didn't figure it was critical for general operation. I
just felt that since they are characterized for their rated
value I should know what that value is and use it for better
initial accuracy.
In any case, I was curious.
I'm considering putting BASIC on the chip and am currently
thinking about strategies and implementation costs to see if
there is hope. With only 1k word to work with, this will be
'tricky,' if possible at all. But there are some great folks
who have come before me and I've learned a little, so I might
have a shot. The 128 bytes of RAM is acceptable.
>when (and if) I get mine.
And here I have 9 of them and am already giving them away. I
feel guilty. ;)
Jon
Reply by ●July 19, 20102010-07-19
--- In m..., Jon Kirwan wrote:
> ...
> I'm considering putting BASIC on the chip and am currently
> thinking about strategies and implementation costs to see if
> there is hope. ...
There is always hope if you are crazy enough ;)
How about FORTH?
> ...
> I'm considering putting BASIC on the chip and am currently
> thinking about strategies and implementation costs to see if
> there is hope. ...
There is always hope if you are crazy enough ;)
How about FORTH?
Reply by ●July 19, 20102010-07-19
On Mon, 19 Jul 2010 03:47:37 -0000, you wrote:
>--- In m..., Jon Kirwan wrote:
>> ...
>> I'm considering putting BASIC on the chip and am currently
>> thinking about strategies and implementation costs to see if
>> there is hope. ...
>
>There is always hope if you are crazy enough ;)
They call me Crazy Ivan Jon, for sure. ;) To really raise
the ante, I'm considering a pure floating point BASIC -- 16
bit FP, basic operations only, of course. I'll take a hack
this week in finding out just how crrrrrazy I am!
>How about FORTH?
Nah. Too easy. Besides, I'm still waiting after nearly 40
years hacking code for the first client to even _ask_ me
about Forth. And I have an evil purpose, anyway. I actually
want NON-PROGRAMMERS to enjoy taking a crack at doing it
once, have some fun while at it, and then never look back to
try again. It has to be close to zero on the learning curve.
So it has to be BASIC, I think. :)
Jon
>--- In m..., Jon Kirwan wrote:
>> ...
>> I'm considering putting BASIC on the chip and am currently
>> thinking about strategies and implementation costs to see if
>> there is hope. ...
>
>There is always hope if you are crazy enough ;)
They call me Crazy Ivan Jon, for sure. ;) To really raise
the ante, I'm considering a pure floating point BASIC -- 16
bit FP, basic operations only, of course. I'll take a hack
this week in finding out just how crrrrrazy I am!
>How about FORTH?
Nah. Too easy. Besides, I'm still waiting after nearly 40
years hacking code for the first client to even _ask_ me
about Forth. And I have an evil purpose, anyway. I actually
want NON-PROGRAMMERS to enjoy taking a crack at doing it
once, have some fun while at it, and then never look back to
try again. It has to be close to zero on the learning curve.
So it has to be BASIC, I think. :)
Jon
Reply by ●July 20, 20102010-07-20
Hello all
The Crystal is
Micro Crystal
www.microcrystal.com
MS3V-T1R 32.768kHz
CL: 12.5pF +/-20ppm
This Information will also be updated in the User Guide
Best Regards
Sebastian Gerlich
Texas Instruments Deutschland GmbH, Haggertystr. 1, D-85356 Freising. Amtsgericht M?nchen HRB 40960. Gesch?ftsf?hrer: Dr. Wolfram Tietscher. Vorsitzender des Aufsichtsrates: Edgar Frank
From: m... [mailto:m...] On Behalf Of Jon Kirwan
Sent: Monday, July 19, 2010 8:36 AM
To: MSP430 list
Subject: Re: [msp430] Re: MSP-EXP430G2 "LaunchPad" -- the crystal
On Mon, 19 Jul 2010 03:47:37 -0000, you wrote:
>--- In m..., Jon Kirwan wrote:
>> ...
>> I'm considering putting BASIC on the chip and am currently
>> thinking about strategies and implementation costs to see if
>> there is hope. ...
>
>There is always hope if you are crazy enough ;)
They call me Crazy Ivan Jon, for sure. ;) To really raise
the ante, I'm considering a pure floating point BASIC -- 16
bit FP, basic operations only, of course. I'll take a hack
this week in finding out just how crrrrrazy I am!
>How about FORTH?
Nah. Too easy. Besides, I'm still waiting after nearly 40
years hacking code for the first client to even _ask_ me
about Forth. And I have an evil purpose, anyway. I actually
want NON-PROGRAMMERS to enjoy taking a crack at doing it
once, have some fun while at it, and then never look back to
try again. It has to be close to zero on the learning curve.
So it has to be BASIC, I think. :)
Jon
The Crystal is
Micro Crystal
www.microcrystal.com
MS3V-T1R 32.768kHz
CL: 12.5pF +/-20ppm
This Information will also be updated in the User Guide
Best Regards
Sebastian Gerlich
Texas Instruments Deutschland GmbH, Haggertystr. 1, D-85356 Freising. Amtsgericht M?nchen HRB 40960. Gesch?ftsf?hrer: Dr. Wolfram Tietscher. Vorsitzender des Aufsichtsrates: Edgar Frank
From: m... [mailto:m...] On Behalf Of Jon Kirwan
Sent: Monday, July 19, 2010 8:36 AM
To: MSP430 list
Subject: Re: [msp430] Re: MSP-EXP430G2 "LaunchPad" -- the crystal
On Mon, 19 Jul 2010 03:47:37 -0000, you wrote:
>--- In m..., Jon Kirwan wrote:
>> ...
>> I'm considering putting BASIC on the chip and am currently
>> thinking about strategies and implementation costs to see if
>> there is hope. ...
>
>There is always hope if you are crazy enough ;)
They call me Crazy Ivan Jon, for sure. ;) To really raise
the ante, I'm considering a pure floating point BASIC -- 16
bit FP, basic operations only, of course. I'll take a hack
this week in finding out just how crrrrrazy I am!
>How about FORTH?
Nah. Too easy. Besides, I'm still waiting after nearly 40
years hacking code for the first client to even _ask_ me
about Forth. And I have an evil purpose, anyway. I actually
want NON-PROGRAMMERS to enjoy taking a crack at doing it
once, have some fun while at it, and then never look back to
try again. It has to be close to zero on the learning curve.
So it has to be BASIC, I think. :)
Jon
Reply by ●July 20, 20102010-07-20
Hello all
The Crystal is
Micro Crystal
www.microcrystal.com
MS3V-T1R 32.768kHz
CL: 12.5pF +/-20ppm
This Information will also be updated in the User Guide
Best Regards
Sebastian
--- In m..., Jon Kirwan wrote:
>
> On Mon, 19 Jul 2010 03:47:37 -0000, you wrote:
>
> >--- In m..., Jon Kirwan wrote:
> >> ...
> >> I'm considering putting BASIC on the chip and am currently
> >> thinking about strategies and implementation costs to see if
> >> there is hope. ...
> >
> >There is always hope if you are crazy enough ;)
>
> They call me Crazy Ivan Jon, for sure. ;) To really raise
> the ante, I'm considering a pure floating point BASIC -- 16
> bit FP, basic operations only, of course. I'll take a hack
> this week in finding out just how crrrrrazy I am!
>
> >How about FORTH?
>
> Nah. Too easy. Besides, I'm still waiting after nearly 40
> years hacking code for the first client to even _ask_ me
> about Forth. And I have an evil purpose, anyway. I actually
> want NON-PROGRAMMERS to enjoy taking a crack at doing it
> once, have some fun while at it, and then never look back to
> try again. It has to be close to zero on the learning curve.
> So it has to be BASIC, I think. :)
>
> Jon
>
The Crystal is
Micro Crystal
www.microcrystal.com
MS3V-T1R 32.768kHz
CL: 12.5pF +/-20ppm
This Information will also be updated in the User Guide
Best Regards
Sebastian
--- In m..., Jon Kirwan wrote:
>
> On Mon, 19 Jul 2010 03:47:37 -0000, you wrote:
>
> >--- In m..., Jon Kirwan wrote:
> >> ...
> >> I'm considering putting BASIC on the chip and am currently
> >> thinking about strategies and implementation costs to see if
> >> there is hope. ...
> >
> >There is always hope if you are crazy enough ;)
>
> They call me Crazy Ivan Jon, for sure. ;) To really raise
> the ante, I'm considering a pure floating point BASIC -- 16
> bit FP, basic operations only, of course. I'll take a hack
> this week in finding out just how crrrrrazy I am!
>
> >How about FORTH?
>
> Nah. Too easy. Besides, I'm still waiting after nearly 40
> years hacking code for the first client to even _ask_ me
> about Forth. And I have an evil purpose, anyway. I actually
> want NON-PROGRAMMERS to enjoy taking a crack at doing it
> once, have some fun while at it, and then never look back to
> try again. It has to be close to zero on the learning curve.
> So it has to be BASIC, I think. :)
>
> Jon
>
Reply by ●July 20, 20102010-07-20
On Tue, 20 Jul 2010 14:03:24 +0200, you wrote:
>Hello all
>
>The Crystal is
>
>Micro Crystal
>www.microcrystal.com
>MS3V-T1R 32.768kHz
>CL: 12.5pF +/-20ppm
>
>This Information will also be updated in the User Guide
>
>Best Regards
>
>Sebastian Gerlich
Thanks very much. I kind of suspected it was the 12.5pF,
more because that is the exact example found in the data
sheet and I imagined it was there because that was a real
example of a unit they actually made rather than a special
order version.
Just as a side note, I had already taken a moment to send a
personal thanks to MicroCrystal for their role. And received
a nice response, too.
Jon
>Hello all
>
>The Crystal is
>
>Micro Crystal
>www.microcrystal.com
>MS3V-T1R 32.768kHz
>CL: 12.5pF +/-20ppm
>
>This Information will also be updated in the User Guide
>
>Best Regards
>
>Sebastian Gerlich
Thanks very much. I kind of suspected it was the 12.5pF,
more because that is the exact example found in the data
sheet and I imagined it was there because that was a real
example of a unit they actually made rather than a special
order version.
Just as a side note, I had already taken a moment to send a
personal thanks to MicroCrystal for their role. And received
a nice response, too.
Jon
Reply by ●July 21, 20102010-07-21
Hello Jon,
Thanks for the side note. We appreciate this.
Thanks also for this threat, we asked the manufacturer to put a sticker on each Crystal from the next lot on.
Bye
Sebastian
Texas Instruments Deutschland GmbH, Haggertystr. 1, D-85356 Freising. Amtsgericht M?nchen HRB 40960. Gesch?ftsf?hrer: Dr. Wolfram Tietscher. Vorsitzender des Aufsichtsrates: Edgar Frank
From: m... [mailto:m...] On Behalf Of Jon Kirwan
Sent: Tuesday, July 20, 2010 6:05 PM
To: MSP430 list
Subject: Re: [msp430] Re: MSP-EXP430G2 "LaunchPad" -- the crystal
On Tue, 20 Jul 2010 14:03:24 +0200, you wrote:
>Hello all
>
>The Crystal is
>
>Micro Crystal
>www.microcrystal.com
>MS3V-T1R 32.768kHz
>CL: 12.5pF +/-20ppm
>
>This Information will also be updated in the User Guide
>
>Best Regards
>
>Sebastian Gerlich
Thanks very much. I kind of suspected it was the 12.5pF,
more because that is the exact example found in the data
sheet and I imagined it was there because that was a real
example of a unit they actually made rather than a special
order version.
Just as a side note, I had already taken a moment to send a
personal thanks to MicroCrystal for their role. And received
a nice response, too.
Jon
Thanks for the side note. We appreciate this.
Thanks also for this threat, we asked the manufacturer to put a sticker on each Crystal from the next lot on.
Bye
Sebastian
Texas Instruments Deutschland GmbH, Haggertystr. 1, D-85356 Freising. Amtsgericht M?nchen HRB 40960. Gesch?ftsf?hrer: Dr. Wolfram Tietscher. Vorsitzender des Aufsichtsrates: Edgar Frank
From: m... [mailto:m...] On Behalf Of Jon Kirwan
Sent: Tuesday, July 20, 2010 6:05 PM
To: MSP430 list
Subject: Re: [msp430] Re: MSP-EXP430G2 "LaunchPad" -- the crystal
On Tue, 20 Jul 2010 14:03:24 +0200, you wrote:
>Hello all
>
>The Crystal is
>
>Micro Crystal
>www.microcrystal.com
>MS3V-T1R 32.768kHz
>CL: 12.5pF +/-20ppm
>
>This Information will also be updated in the User Guide
>
>Best Regards
>
>Sebastian Gerlich
Thanks very much. I kind of suspected it was the 12.5pF,
more because that is the exact example found in the data
sheet and I imagined it was there because that was a real
example of a unit they actually made rather than a special
order version.
Just as a side note, I had already taken a moment to send a
personal thanks to MicroCrystal for their role. And received
a nice response, too.
Jon
Reply by ●July 21, 20102010-07-21
On Wed, 21 Jul 2010 09:04:57 +0200, Sebastian wrote:
> Thanks for the side note. We appreciate this.
I think it took a lot to consider participating at the cost
target TI set for the unit. I don't know what the earlier
negotiations looked like, but in the end there is a very
decent tuning fork oscillator from a decent company included
in the MSP-EXP430G2 and I think such suppliers deserve a
little friendly recognition from those of us who are
benefiting from the efforts of many, including them.
I wanted them to know that I noticed and cared.
> Thanks also for this threat,
Well, I hope there was no "threat" anywhere present in
anything I said.
> we asked the manufacturer to
> put a sticker on each Crystal from the next lot on.
Hehe. Now _that_ is going to cost them!! ;) I would have
been fine with an updated bill of materials in the PDF.
Anyway, thanks. To you and everyone else involved.
Jon
>Bye
>
>Sebastian
>
>Texas Instruments Deutschland GmbH, Haggertystr. 1, D-85356 Freising. Amtsgericht M?nchen HRB 40960. Gesch?ftsf?hrer: Dr. Wolfram Tietscher. Vorsitzender des Aufsichtsrates: Edgar Frank
>From: m... [mailto:m...] On Behalf Of Jon Kirwan
>Sent: Tuesday, July 20, 2010 6:05 PM
>To: MSP430 list
>Subject: Re: [msp430] Re: MSP-EXP430G2 "LaunchPad" -- the crystal
>
>On Tue, 20 Jul 2010 14:03:24 +0200, you wrote:
>
>>Hello all
>>
>>The Crystal is
>>
>>Micro Crystal
>>www.microcrystal.com
>>MS3V-T1R 32.768kHz
>>CL: 12.5pF +/-20ppm
>>
>>This Information will also be updated in the User Guide
>>
>>Best Regards
>>
>>Sebastian Gerlich
>
>Thanks very much. I kind of suspected it was the 12.5pF,
>more because that is the exact example found in the data
>sheet and I imagined it was there because that was a real
>example of a unit they actually made rather than a special
>order version.
>
>Just as a side note, I had already taken a moment to send a
>personal thanks to MicroCrystal for their role. And received
>a nice response, too.
>
>Jon
>
>
>
>
> Thanks for the side note. We appreciate this.
I think it took a lot to consider participating at the cost
target TI set for the unit. I don't know what the earlier
negotiations looked like, but in the end there is a very
decent tuning fork oscillator from a decent company included
in the MSP-EXP430G2 and I think such suppliers deserve a
little friendly recognition from those of us who are
benefiting from the efforts of many, including them.
I wanted them to know that I noticed and cared.
> Thanks also for this threat,
Well, I hope there was no "threat" anywhere present in
anything I said.
> we asked the manufacturer to
> put a sticker on each Crystal from the next lot on.
Hehe. Now _that_ is going to cost them!! ;) I would have
been fine with an updated bill of materials in the PDF.
Anyway, thanks. To you and everyone else involved.
Jon
>Bye
>
>Sebastian
>
>Texas Instruments Deutschland GmbH, Haggertystr. 1, D-85356 Freising. Amtsgericht M?nchen HRB 40960. Gesch?ftsf?hrer: Dr. Wolfram Tietscher. Vorsitzender des Aufsichtsrates: Edgar Frank
>From: m... [mailto:m...] On Behalf Of Jon Kirwan
>Sent: Tuesday, July 20, 2010 6:05 PM
>To: MSP430 list
>Subject: Re: [msp430] Re: MSP-EXP430G2 "LaunchPad" -- the crystal
>
>On Tue, 20 Jul 2010 14:03:24 +0200, you wrote:
>
>>Hello all
>>
>>The Crystal is
>>
>>Micro Crystal
>>www.microcrystal.com
>>MS3V-T1R 32.768kHz
>>CL: 12.5pF +/-20ppm
>>
>>This Information will also be updated in the User Guide
>>
>>Best Regards
>>
>>Sebastian Gerlich
>
>Thanks very much. I kind of suspected it was the 12.5pF,
>more because that is the exact example found in the data
>sheet and I imagined it was there because that was a real
>example of a unit they actually made rather than a special
>order version.
>
>Just as a side note, I had already taken a moment to send a
>personal thanks to MicroCrystal for their role. And received
>a nice response, too.
>
>Jon
>
>
>
>
