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Discussion Groups | MSP430 | picking clocks for MSPF1611
The purpose of this group is to foster exchange of information on the Texas Instruments MSP430 family of microcontrollers and related tools. Everyone welcome, all levels of familiarity/expertise.
picking clocks for MSPF1611 - Kung...@yahoo.com - Sep 22 15:50:17 2008
Hi,
I need some help and advice on picking the high-speed/low-speed clocks and oscillators for an MSP430F1611. The dimensions of the components matter with as small as possible being the best (in particular, the height must be 1.25mm or less).
For the 32768Hz low-frequency clock, I am thinking of using the CC7V-T1A (http://www.microcrystal.com/productdocuments/variants/CC7V-T1A._1155.pdf). This one fulfills my size requirements by being 3.2mm*1.5mm*0.9mm. Does anyone have any experience working with this? Would this be a suitable clock? The Application Report from TI 'MSP430 32-kHz Crystal Oscillators' mentions that the load capacitors of a MSP430x1xx model are 6pF while the CC7V-T1A has a specification of 12.5pF. Will this cause a problem? Or do I need to ask Microcrystals to specially make me some.
For the high speed clock, I want to go with the highest frequency possible, ie, 8MHz. I was previously using MSA309 (at 6MHz), a tuning fork can which is 9mm*3mm*3mm. Microcrystal makes a crystal which runs at 8MHz, the CC1A-T1A (http://www.microcrystal.com/productdocuments/variants/CC1A-T1A._9956.pdf). However, this one is slightly larger than I would like. Does anyone have any experience with a small high-speed clock for the MSP430F1611?
Any help would be greatly appreciated!
-Bryce
------------------------------------
(You need to be a member of msp430 -- send a blank email to msp430-subscribe@yahoogroups.com )
I need some help and advice on picking the high-speed/low-speed clocks and oscillators for an MSP430F1611. The dimensions of the components matter with as small as possible being the best (in particular, the height must be 1.25mm or less).
For the 32768Hz low-frequency clock, I am thinking of using the CC7V-T1A (http://www.microcrystal.com/productdocuments/variants/CC7V-T1A._1155.pdf). This one fulfills my size requirements by being 3.2mm*1.5mm*0.9mm. Does anyone have any experience working with this? Would this be a suitable clock? The Application Report from TI 'MSP430 32-kHz Crystal Oscillators' mentions that the load capacitors of a MSP430x1xx model are 6pF while the CC7V-T1A has a specification of 12.5pF. Will this cause a problem? Or do I need to ask Microcrystals to specially make me some.
For the high speed clock, I want to go with the highest frequency possible, ie, 8MHz. I was previously using MSA309 (at 6MHz), a tuning fork can which is 9mm*3mm*3mm. Microcrystal makes a crystal which runs at 8MHz, the CC1A-T1A (http://www.microcrystal.com/productdocuments/variants/CC1A-T1A._9956.pdf). However, this one is slightly larger than I would like. Does anyone have any experience with a small high-speed clock for the MSP430F1611?
Any help would be greatly appreciated!
-Bryce
------------------------------------
(You need to be a member of msp430 -- send a blank email to msp430-subscribe@yahoogroups.com )
Re: picking clocks for MSPF1611 - Onestone - Sep 22 16:00:38 2008
i HAVE USED THE MICROCRYSTAL PART, BUT NOW USE THE abs07 FROM ABRACON,
SIMPLY BECAause it was easier for me to get hold of. In stock in small
volumes from Digikey, and availale in 10ppm. For an 8 Mhz clock if
dependson my needs, the NDK NX5032 series runs from -40 to 150C at 50ppm
and is 5 x 3.2mm, I've also used the ABMM 8MHz at 20ppm in a 7x5 case.
If you need 10ppm for RF or similar then the ABM3 series is 5 x 3.2. All
of these are readily availale from Digikey in small volumes and all work
well with any of the MSPs I've tried them with.
Al
K...@yahoo.com wrote:
>Hi,
>I need some help and advice on picking the high-speed/low-speed clocks and oscillators for an MSP430F1611. The dimensions of the components matter with as small as possible being the best (in particular, the height must be 1.25mm or less).
>
>For the 32768Hz low-frequency clock, I am thinking of using the CC7V-T1A (http://www.microcrystal.com/productdocuments/variants/CC7V-T1A._1155.pdf). This one fulfills my size requirements by being 3.2mm*1.5mm*0.9mm. Does anyone have any experience working with this? Would this be a suitable clock? The Application Report from TI 'MSP430 32-kHz Crystal Oscillators' mentions that the load capacitors of a MSP430x1xx model are 6pF while the CC7V-T1A has a specification of 12.5pF. Will this cause a problem? Or do I need to ask Microcrystals to specially make me some.
>
>For the high speed clock, I want to go with the highest frequency possible, ie, 8MHz. I was previously using MSA309 (at 6MHz), a tuning fork can which is 9mm*3mm*3mm. Microcrystal makes a crystal which runs at 8MHz, the CC1A-T1A (http://www.microcrystal.com/productdocuments/variants/CC1A-T1A._9956.pdf). However, this one is slightly larger than I would like. Does anyone have any experience with a small high-speed clock for the MSP430F1611?
>
>Any help would be greatly appreciated!
>
>-Bryce
>
>------------------------------------
(You need to be a member of msp430 -- send a blank email to msp430-subscribe@yahoogroups.com )
SIMPLY BECAause it was easier for me to get hold of. In stock in small
volumes from Digikey, and availale in 10ppm. For an 8 Mhz clock if
dependson my needs, the NDK NX5032 series runs from -40 to 150C at 50ppm
and is 5 x 3.2mm, I've also used the ABMM 8MHz at 20ppm in a 7x5 case.
If you need 10ppm for RF or similar then the ABM3 series is 5 x 3.2. All
of these are readily availale from Digikey in small volumes and all work
well with any of the MSPs I've tried them with.
Al
K...@yahoo.com wrote:
>Hi,
>I need some help and advice on picking the high-speed/low-speed clocks and oscillators for an MSP430F1611. The dimensions of the components matter with as small as possible being the best (in particular, the height must be 1.25mm or less).
>
>For the 32768Hz low-frequency clock, I am thinking of using the CC7V-T1A (http://www.microcrystal.com/productdocuments/variants/CC7V-T1A._1155.pdf). This one fulfills my size requirements by being 3.2mm*1.5mm*0.9mm. Does anyone have any experience working with this? Would this be a suitable clock? The Application Report from TI 'MSP430 32-kHz Crystal Oscillators' mentions that the load capacitors of a MSP430x1xx model are 6pF while the CC7V-T1A has a specification of 12.5pF. Will this cause a problem? Or do I need to ask Microcrystals to specially make me some.
>
>For the high speed clock, I want to go with the highest frequency possible, ie, 8MHz. I was previously using MSA309 (at 6MHz), a tuning fork can which is 9mm*3mm*3mm. Microcrystal makes a crystal which runs at 8MHz, the CC1A-T1A (http://www.microcrystal.com/productdocuments/variants/CC1A-T1A._9956.pdf). However, this one is slightly larger than I would like. Does anyone have any experience with a small high-speed clock for the MSP430F1611?
>
>Any help would be greatly appreciated!
>
>-Bryce
>
>------------------------------------
(You need to be a member of msp430 -- send a blank email to msp430-subscribe@yahoogroups.com )
Re: picking clocks for MSPF1611 - Augusto Einsfeldt - Sep 22 16:19:54 2008
See more info on this DSX530GA:
http://www.kds.info/html/products/products_catalog/ProductView_en.php?Name=
=3DDSX530GA&Model=3D01&id=3D1
it is 1mm height only.
You could also use an external oscillator like Microcrystal's MCS01V. It ha=
s 2mm height only but draws 10mA, not being a good idea for LP applications=
.
-Augusto
De:m...@yahoogroups.com
Para:m...@yahoogroups.com
C=F3pia:
Data:Tue, 23 Sep 2008 05:28:37 +0930
Assunto:Re: [msp430] picking clocks for MSPF1611
i HAVE USED THE MICROCRYSTAL PART, BUT NOW USE THE abs07 FROM ABRACON,=20
SIMPLY BECAause it was easier for me to get hold of. In stock in small=20
volumes from Digikey, and availale in 10ppm. For an 8 Mhz clock if=20
dependson my needs, the NDK NX5032 series runs from -40 to 150C at 50ppm=20
and is 5 x 3.2mm, I've also used the ABMM 8MHz at 20ppm in a 7x5 case.=20
If you need 10ppm for RF or similar then the ABM3 series is 5 x 3.2. All=20
of these are readily availale from Digikey in small volumes and all work=20
well with any of the MSPs I've tried them with.
Al
K...@yahoo.com wrote:
>Hi,
>I need some help and advice on picking the high-speed/low-speed clocks and=
oscillators for an MSP430F1611. The dimensions of the components matter wi=
th as small as possible being the best (in particular, the height must be 1=
.25mm or less).=20
>
>For the 32768Hz low-frequency clock, I am thinking of using the CC7V-T1A (=
http://www.microcrystal.com/productdocuments/variants/CC7V-T1A._1155.pdf). =
This one fulfills my size requirements by being 3.2mm*1.5mm*0.9mm. Does any=
one have any experience working with this? Would this be a suitable clock? =
The Application Report from TI 'MSP430 32-kHz Crystal Oscillators' mentions=
that the load capacitors of a MSP430x1xx model are 6pF while the CC7V-T1A =
has a specification of 12.5pF. Will this cause a problem? Or do I need to a=
sk Microcrystals to specially make me some.=20
>
>For the high speed clock, I want to go with the highest frequency possible=
, ie, 8MHz. I was previously using MSA309 (at 6MHz), a tuning fork can whic=
h is 9mm*3mm*3mm. Microcrystal makes a crystal which runs at 8MHz, the CC1A=
-T1A (http://www.microcrystal.com/productdocuments/variants/CC1A-T1A._9956.=
pdf). However, this one is slightly larger than I would like. Does anyone h=
ave any experience with a small high-speed clock for the MSP430F1611?
>
>Any help would be greatly appreciated!
>
>-Bryce
>
>------------------------------------
(You need to be a member of msp430 -- send a blank email to msp430-subscribe@yahoogroups.com )
http://www.kds.info/html/products/products_catalog/ProductView_en.php?Name=
=3DDSX530GA&Model=3D01&id=3D1
it is 1mm height only.
You could also use an external oscillator like Microcrystal's MCS01V. It ha=
s 2mm height only but draws 10mA, not being a good idea for LP applications=
.
-Augusto
De:m...@yahoogroups.com
Para:m...@yahoogroups.com
C=F3pia:
Data:Tue, 23 Sep 2008 05:28:37 +0930
Assunto:Re: [msp430] picking clocks for MSPF1611
i HAVE USED THE MICROCRYSTAL PART, BUT NOW USE THE abs07 FROM ABRACON,=20
SIMPLY BECAause it was easier for me to get hold of. In stock in small=20
volumes from Digikey, and availale in 10ppm. For an 8 Mhz clock if=20
dependson my needs, the NDK NX5032 series runs from -40 to 150C at 50ppm=20
and is 5 x 3.2mm, I've also used the ABMM 8MHz at 20ppm in a 7x5 case.=20
If you need 10ppm for RF or similar then the ABM3 series is 5 x 3.2. All=20
of these are readily availale from Digikey in small volumes and all work=20
well with any of the MSPs I've tried them with.
Al
K...@yahoo.com wrote:
>Hi,
>I need some help and advice on picking the high-speed/low-speed clocks and=
oscillators for an MSP430F1611. The dimensions of the components matter wi=
th as small as possible being the best (in particular, the height must be 1=
.25mm or less).=20
>
>For the 32768Hz low-frequency clock, I am thinking of using the CC7V-T1A (=
http://www.microcrystal.com/productdocuments/variants/CC7V-T1A._1155.pdf). =
This one fulfills my size requirements by being 3.2mm*1.5mm*0.9mm. Does any=
one have any experience working with this? Would this be a suitable clock? =
The Application Report from TI 'MSP430 32-kHz Crystal Oscillators' mentions=
that the load capacitors of a MSP430x1xx model are 6pF while the CC7V-T1A =
has a specification of 12.5pF. Will this cause a problem? Or do I need to a=
sk Microcrystals to specially make me some.=20
>
>For the high speed clock, I want to go with the highest frequency possible=
, ie, 8MHz. I was previously using MSA309 (at 6MHz), a tuning fork can whic=
h is 9mm*3mm*3mm. Microcrystal makes a crystal which runs at 8MHz, the CC1A=
-T1A (http://www.microcrystal.com/productdocuments/variants/CC1A-T1A._9956.=
pdf). However, this one is slightly larger than I would like. Does anyone h=
ave any experience with a small high-speed clock for the MSP430F1611?
>
>Any help would be greatly appreciated!
>
>-Bryce
>
>------------------------------------
(You need to be a member of msp430 -- send a blank email to msp430-subscribe@yahoogroups.com )