The new BS2pe model
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Posts: 46,084
Greetings!
How about a bit more info about this chip?
It says it has 32KB EEPROM, but how is it organised?
Speed?
Power consumption?
What about Working temperatures?
(I could use a BS2p with extended temperature range :-)
Any other differences?
:-)
Trygve
How about a bit more info about this chip?
It says it has 32KB EEPROM, but how is it organised?
Speed?
Power consumption?
What about Working temperatures?
(I could use a BS2p with extended temperature range :-)
Any other differences?
:-)
Trygve
Comments
I will forward the complete specifications to your email address.
The same documentation will also be posted on the web site under Downloads/BASIC
Stamp Modules
Comparison.
Here are the main specs that you requested-
Processor Speed 8MHz turbo
Current draw at 5V 15mA Run / 60µA Sleep
Source / Sink Current per I/O 30 mA / 30 mA
Source / Current per unit 60 mA / 60 mA per 8 I/O pins
Environment 0º - 70º C* (32º - 158º F) **
It isn't available with the industrial temperature range.
The BS2PE is ideal for datalogging applications, low power applications, and for
programs that
require the use of tables (EEPROM = 16 x 2K Bytes (16 K for source).
Erik Wood
Parallax, Inc.
599 Menlo Dr., Suite #100
Rocklin, CA 95765
(916) 624-8333
www.parallax.com
Original Message
From: Trygve Henriksen [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=7di-l47SMMNUdkri6ae8kCeg1tuDJTTDdggDnaWe9MznH-JS4wpP9jT4fnhtFmgl0c3HeGti6Mjlrsrh6F1TtqwFarIv]trygve.henriksen@v...[/url
Sent: Thursday, November 21, 2002 1:29 AM
To: 'basicstamps@yahoogroups.com'
Subject: [noparse][[/noparse]basicstamps] The new BS2pe model
Greetings!
How about a bit more info about this chip?
It says it has 32KB EEPROM, but how is it organised?
Speed?
Power consumption?
What about Working temperatures?
(I could use a BS2p with extended temperature range :-)
Any other differences?
:-)
Trygve
To UNSUBSCRIBE, just send mail to:
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[noparse][[/noparse]Non-text portions of this message have been removed]
Original Message
From: "Erik Wood" <ewood@p...>
To: <basicstamps@yahoogroups.com>
Sent: Thursday, November 21, 2002 9:21 AM
Subject: RE: [noparse][[/noparse]basicstamps] The new BS2pe model
Trygve,
I will forward the complete specifications to your email address.
The same documentation will also be posted on the web site under
Downloads/BASIC Stamp Modules
Comparison.
Here are the main specs that you requested-
Processor Speed 8MHz turbo
Current draw at 5V 15mA Run / 60µA Sleep
Source / Sink Current per I/O 30 mA / 30 mA
Source / Current per unit 60 mA / 60 mA per 8 I/O pins
Environment 0º - 70º C* (32º - 158º F) **
It isn't available with the industrial temperature range.
The BS2PE is ideal for datalogging applications, low power applications, and
for programs that
require the use of tables (EEPROM = 16 x 2K Bytes (16 K for source).
Erik Wood
Parallax, Inc.
599 Menlo Dr., Suite #100
Rocklin, CA 95765
(916) 624-8333
www.parallax.com
Original Message
From: Trygve Henriksen [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=7Ik9K3HoCqZsEkck8Ga0MGLizrMGjehk3_OgcZZtbKmWaadsNG-_V5-8JToZ1LNY911_yccyhXCH6xoZfNIKOdZsLg8]trygve.henriksen@v...[/url
Sent: Thursday, November 21, 2002 1:29 AM
To: 'basicstamps@yahoogroups.com'
Subject: [noparse][[/noparse]basicstamps] The new BS2pe model
Greetings!
How about a bit more info about this chip?
It says it has 32KB EEPROM, but how is it organised?
Speed?
Power consumption?
What about Working temperatures?
(I could use a BS2p with extended temperature range :-)
Any other differences?
:-)
Trygve
To UNSUBSCRIBE, just send mail to:
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those that are interested:
* Package: 24-pin DIP
* Environment: 0 - 70 C (32 - 158 F)
* Microcontroller: Scenix SX48AC
* Processor Speed: 8 MHz, Turbo
* Program Execution Speed: ~6000 instructions/second
* RAM Size: 38 Bytes (12 I/O, 26 variables)
* Scratchpad RAM: 128 Bytes
* EEPROM (Program) Size: 8 x 2K, ~4000 instructions (slots 0 - 7)
* EEPROM (Storage) Size: 8 x 2K (slots 8 - 15)
* I/O Pins: 16 + 2 dedicated serial (programming port)
* Voltage Requirements: 5 - 12 vdc
* Current draw @ 5V: 15 mA Run / 60 uA Sleep
* PBASIC Commands: 55
Some important notes:
The BS2pe has 16 banks, but only eight can be used for programs. The other
eight are available for run-time storage and retrieval of data. The storage
slot is selected with STORE, then WRITE and READ can be used.
The BS2pe is not fast enough to Overdrive 1-Wire communications -- standard
1-Wire comm speed is okay.
The BS2pe is targeted at datalogging apps, but with it's feature set and low
current operation, it is great for robotics and other battery-powered
applications.
-- Jon Williams
-- Applications Engineer, Parallax
In a message dated 11/21/02 3:35:15 AM Central Standard Time,
trygve.henriksen@v... writes:
> Greetings!
>
> How about a bit more info about this chip?
>
> It says it has 32KB EEPROM, but how is it organised?
>
> Speed?
>
> Power consumption?
>
> What about Working temperatures?
> (I could use a BS2p with extended temperature range :-)
>
> Any other differences?
>
[noparse][[/noparse]Non-text portions of this message have been removed]
~150 are currently available for shipment
Part # BS2PE
Qty. 1 Price $79.00
Erik Wood
Parallax, Inc.
599 Menlo Dr., Suite #100
Rocklin, CA 95765
(916) 624-8333
www.parallax.com
Original Message
From: rad0 [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=KNIbbYQNdDtBcpNAnQFpBRt2dcptbIMHhbijEDwqqNsEK_F05LnPUBzlxGb_zaQVT2WYgN2wp0FO]rad0@a...[/url
Sent: Thursday, November 21, 2002 7:29 AM
To: basicstamps@yahoogroups.com
Subject: Re: [noparse][[/noparse]basicstamps] The new BS2pe model
are they shipping yet??
Original Message
From: "Erik Wood" <ewood@p...>
To: <basicstamps@yahoogroups.com>
Sent: Thursday, November 21, 2002 9:21 AM
Subject: RE: [noparse][[/noparse]basicstamps] The new BS2pe model
Trygve,
I will forward the complete specifications to your email address.
The same documentation will also be posted on the web site under
Downloads/BASIC Stamp Modules
Comparison.
Here are the main specs that you requested-
Processor Speed 8MHz turbo
Current draw at 5V 15mA Run / 60µA Sleep
Source / Sink Current per I/O 30 mA / 30 mA
Source / Current per unit 60 mA / 60 mA per 8 I/O pins
Environment 0º - 70º C* (32º - 158º F) **
It isn't available with the industrial temperature range.
The BS2PE is ideal for datalogging applications, low power applications, and
for programs that
require the use of tables (EEPROM = 16 x 2K Bytes (16 K for source).
Erik Wood
Parallax, Inc.
599 Menlo Dr., Suite #100
Rocklin, CA 95765
(916) 624-8333
www.parallax.com
Original Message
From: Trygve Henriksen [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=b4EnP83IriNRY3sujScuzGQbhIrTewcqALuQoQNEjRMP3ojH5jsSjWn-Im0pk2Kn67bn5D43NBKQC_7A-8QnvxJXTKlB]trygve.henriksen@v...[/url
Sent: Thursday, November 21, 2002 1:29 AM
To: 'basicstamps@yahoogroups.com'
Subject: [noparse][[/noparse]basicstamps] The new BS2pe model
Greetings!
How about a bit more info about this chip?
It says it has 32KB EEPROM, but how is it organised?
Speed?
Power consumption?
What about Working temperatures?
(I could use a BS2p with extended temperature range :-)
Any other differences?
:-)
Trygve
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[noparse][[/noparse]Non-text portions of this message have been removed]
consume considerably less power than previous Stamp IIs, because it
has a much shorter wakeup interval. When you use a command like
SLEEP 60, the Stamp wakes up at 2 second intervals to check status
and to see if the 60 second interval is up. During that brief
interval of about 16 milliseconds every two seconds, it consumes much
more power, and on the average that is a significant part of the
current drain. On the BS2pe, the wakeup interval is reduced to less
than one millisecond, so the long term average current in SLEEP is
much less. For low power or solar powered data loggers, that can
extend battery life and increase reliability. I really want to thank
Chuck Gracey for including that little modification.
I have an article posted at
http://www.emesystems.com/BS2pe.htm
mainly about the power consumption.
-- regards,
Tracy Allen
electronically monitored ecosystems
mailto:tracy@e...
http://www.emesystems.com
>The BS2pe is a low-current version of the BS2p. Here are some specifics for
>those that are interested:
>
>* Package: 24-pin DIP
>* Environment: 0 - 70 C (32 - 158 F)
>* Microcontroller: Scenix SX48AC
>* Processor Speed: 8 MHz, Turbo
>* Program Execution Speed: ~6000 instructions/second
>* RAM Size: 38 Bytes (12 I/O, 26 variables)
>* Scratchpad RAM: 128 Bytes
>* EEPROM (Program) Size: 8 x 2K, ~4000 instructions (slots 0 - 7)
>* EEPROM (Storage) Size: 8 x 2K (slots 8 - 15)
>* I/O Pins: 16 + 2 dedicated serial (programming port)
>* Voltage Requirements: 5 - 12 vdc
>* Current draw @ 5V: 15 mA Run / 60 uA Sleep
>* PBASIC Commands: 55
>
>Some important notes:
>
>The BS2pe has 16 banks, but only eight can be used for programs. The other
>eight are available for run-time storage and retrieval of data. The storage
>slot is selected with STORE, then WRITE and READ can be used.
>
>The BS2pe is not fast enough to Overdrive 1-Wire communications -- standard
>1-Wire comm speed is okay.
>
>The BS2pe is targeted at datalogging apps, but with it's feature set and low
>current operation, it is great for robotics and other battery-powered
>applications.
>
>-- Jon Williams
>-- Applications Engineer, Parallax
>
>
>In a message dated 11/21/02 3:35:15 AM Central Standard Time,
>trygve.henriksen@v... writes:
>
>
> > Greetings!
> >
> > How about a bit more info about this chip?
> >
> > It says it has 32KB EEPROM, but how is it organised?
> >
> > Speed?
> >
> > Power consumption?
> >
> > What about Working temperatures?
> > (I could use a BS2p with extended temperature range :-)
> >
> Any other differences?
running at 50 Mhz. The ubicom data sheet indicates it is supported.
Changing some timing parameters for pause, debug, ect seems like it
wouldn't take much effort. A power supply design change may be
required to support the ubicom at 50 Mhz. IIRC the Javelin stamp uses
a switching supply because of the power it requires. A little cutting
and pasting of schematics and some code tweaks and you could sell a
speed demon for $130. I would buy a few. Also, will the interpter
chip for the BS2pe be available to buy in the furure?
Jason
> >The BS2pe is a low-current version of the BS2p. Here are some
specifics for
> >those that are interested:
> >
> >* Package: 24-pin DIP
> >* Environment: 0 - 70 C (32 - 158 F)
> >* Microcontroller: Scenix SX48AC
> >* Processor Speed: 8 MHz, Turbo
> >* Program Execution Speed: ~6000 instructions/second
> >* RAM Size: 38 Bytes (12 I/O, 26 variables)
> >* Scratchpad RAM: 128 Bytes
> >* EEPROM (Program) Size: 8 x 2K, ~4000 instructions (slots 0 - 7)
> >* EEPROM (Storage) Size: 8 x 2K (slots 8 - 15)
> >* I/O Pins: 16 + 2 dedicated serial (programming port)
> >* Voltage Requirements: 5 - 12 vdc
> >* Current draw @ 5V: 15 mA Run / 60 uA Sleep
> >* PBASIC Commands: 55
> >
> >Some important notes:
> >
> >The BS2pe has 16 banks, but only eight can be used for programs.
The other
> >eight are available for run-time storage and retrieval of data.
The storage
> >slot is selected with STORE, then WRITE and READ can be used.
> >
> >The BS2pe is not fast enough to Overdrive 1-Wire communications --
standard
> >1-Wire comm speed is okay.
> >
> >The BS2pe is targeted at datalogging apps, but with it's feature
set and low
> >current operation, it is great for robotics and other battery-
powered
> >applications.
> >
> >-- Jon Williams
> >-- Applications Engineer, Parallax
> >
> >
> >In a message dated 11/21/02 3:35:15 AM Central Standard Time,
> >trygve.henriksen@v... writes:
> >
> >
> > > Greetings!
> > >
> > > How about a bit more info about this chip?
> > >
> > > It says it has 32KB EEPROM, but how is it organised?
> > >
> > > Speed?
> > >
> > > Power consumption?
> > >
> > > What about Working temperatures?
> > > (I could use a BS2p with extended temperature range :-)
> > >
> > Any other differences?
It looks like you feel the need for speed!
The BS2pe interpreter chips will be available soon for individual purchasing.
We will announce
their availability on our home page.
Since I'm not a technical guru, I'll forward the request to our engineering
staff to see if your
requests are feasible.
Maybe Jon Williams can jump in and help me out?!
Erik Wood
Parallax, Inc.
599 Menlo Dr., Suite #100
Rocklin, CA 95765
(916) 624-8333
www.parallax.com
Original Message
From: jbirnsch [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=2ErT0Ed3eEcor7_r79hu6XfIgdLBV0LLQXdY7lVvtAYnmvs1sgwvbi32Gtf6Xi-nHQHul12eTxdsy3s]jbirnsch@v...[/url
Sent: Thursday, November 21, 2002 10:48 AM
To: basicstamps@yahoogroups.com
Subject: [noparse][[/noparse]basicstamps] Re: The new BS2pe model
How about for those speed hungry stampers a verson of the BS2p40
running at 50 Mhz. The ubicom data sheet indicates it is supported.
Changing some timing parameters for pause, debug, ect seems like it
wouldn't take much effort. A power supply design change may be
required to support the ubicom at 50 Mhz. IIRC the Javelin stamp uses
a switching supply because of the power it requires. A little cutting
and pasting of schematics and some code tweaks and you could sell a
speed demon for $130. I would buy a few. Also, will the interpter
chip for the BS2pe be available to buy in the furure?
Jason
> >The BS2pe is a low-current version of the BS2p. Here are some
specifics for
> >those that are interested:
> >
> >* Package: 24-pin DIP
> >* Environment: 0 - 70 C (32 - 158 F)
> >* Microcontroller: Scenix SX48AC
> >* Processor Speed: 8 MHz, Turbo
> >* Program Execution Speed: ~6000 instructions/second
> >* RAM Size: 38 Bytes (12 I/O, 26 variables)
> >* Scratchpad RAM: 128 Bytes
> >* EEPROM (Program) Size: 8 x 2K, ~4000 instructions (slots 0 - 7)
> >* EEPROM (Storage) Size: 8 x 2K (slots 8 - 15)
> >* I/O Pins: 16 + 2 dedicated serial (programming port)
> >* Voltage Requirements: 5 - 12 vdc
> >* Current draw @ 5V: 15 mA Run / 60 uA Sleep
> >* PBASIC Commands: 55
> >
> >Some important notes:
> >
> >The BS2pe has 16 banks, but only eight can be used for programs.
The other
> >eight are available for run-time storage and retrieval of data.
The storage
> >slot is selected with STORE, then WRITE and READ can be used.
> >
> >The BS2pe is not fast enough to Overdrive 1-Wire communications --
standard
> >1-Wire comm speed is okay.
> >
> >The BS2pe is targeted at datalogging apps, but with it's feature
set and low
> >current operation, it is great for robotics and other battery-
powered
> >applications.
> >
> >-- Jon Williams
> >-- Applications Engineer, Parallax
> >
> >
> >In a message dated 11/21/02 3:35:15 AM Central Standard Time,
> >trygve.henriksen@v... writes:
> >
> >
> > > Greetings!
> > >
> > > How about a bit more info about this chip?
> > >
> > > It says it has 32KB EEPROM, but how is it organised?
> > >
> > > Speed?
> > >
> > > Power consumption?
> > >
> > > What about Working temperatures?
> > > (I could use a BS2p with extended temperature range :-)
> > >
> > Any other differences?
To UNSUBSCRIBE, just send mail to:
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[noparse][[/noparse]Non-text portions of this message have been removed]
Thus it needs a TO-220 voltage regulator to run at that speed.
You'd likely have to have a small heat sink on the regulator
to keep it from overheating too.
Speed typically means more power consumption.
They'd have to make the chip without a regulator, thus actually it may be
better to make it a OEM version and let the user manufacture their own PCB's
for it. Actually, a 75mhz OEM version would be sweeter.
Original Message
From: jbirnsch [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=SqPOcOgwJxc2GadUnIx4XAQSnOlDp1nHragImRr_VCHARgjMbOLm7XgsaQrzordsieSxhSXd47I]jbirnsch@v...[/url
Sent: Thursday, November 21, 2002 12:48 PM
To: basicstamps@yahoogroups.com
Subject: [noparse][[/noparse]basicstamps] Re: The new BS2pe model
How about for those speed hungry stampers a verson of the BS2p40
running at 50 Mhz. The ubicom data sheet indicates it is supported.
Changing some timing parameters for pause, debug, ect seems like it
wouldn't take much effort. A power supply design change may be
required to support the ubicom at 50 Mhz. IIRC the Javelin stamp uses
a switching supply because of the power it requires. A little cutting
and pasting of schematics and some code tweaks and you could sell a
speed demon for $130. I would buy a few. Also, will the interpter
chip for the BS2pe be available to buy in the furure?
Jason
> >The BS2pe is a low-current version of the BS2p. Here are some
specifics for
> >those that are interested:
> >
> >* Package: 24-pin DIP
> >* Environment: 0 - 70 C (32 - 158 F)
> >* Microcontroller: Scenix SX48AC
> >* Processor Speed: 8 MHz, Turbo
> >* Program Execution Speed: ~6000 instructions/second
> >* RAM Size: 38 Bytes (12 I/O, 26 variables)
> >* Scratchpad RAM: 128 Bytes
> >* EEPROM (Program) Size: 8 x 2K, ~4000 instructions (slots 0 - 7)
> >* EEPROM (Storage) Size: 8 x 2K (slots 8 - 15)
> >* I/O Pins: 16 + 2 dedicated serial (programming port)
> >* Voltage Requirements: 5 - 12 vdc
> >* Current draw @ 5V: 15 mA Run / 60 uA Sleep
> >* PBASIC Commands: 55
> >
> >Some important notes:
> >
> >The BS2pe has 16 banks, but only eight can be used for programs.
The other
> >eight are available for run-time storage and retrieval of data.
The storage
> >slot is selected with STORE, then WRITE and READ can be used.
> >
> >The BS2pe is not fast enough to Overdrive 1-Wire communications --
standard
> >1-Wire comm speed is okay.
> >
> >The BS2pe is targeted at datalogging apps, but with it's feature
set and low
> >current operation, it is great for robotics and other battery-
powered
> >applications.
> >
> >-- Jon Williams
> >-- Applications Engineer, Parallax
> >
> >
> >In a message dated 11/21/02 3:35:15 AM Central Standard Time,
> >trygve.henriksen@v... writes:
> >
> >
> > > Greetings!
> > >
> > > How about a bit more info about this chip?
> > >
> > > It says it has 32KB EEPROM, but how is it organised?
> > >
> > > Speed?
> > >
> > > Power consumption?
> > >
> > > What about Working temperatures?
> > > (I could use a BS2p with extended temperature range :-)
> > >
> > Any other differences?
To UNSUBSCRIBE, just send mail to:
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from the same email address that you subscribed. Text in the Subject and
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Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
alone!!!
Step into the realm of switching regulators. A SOT23-5 switching
regulator switching at 1.4 Mhz with an output current of 400 mA at 5V
and a max input voltage of 12 V can be 90% efficient and take up less
board space that the body of your TO-220. Think small. Who needs a
heatsink??? With an 8 pin SOIC switching regulator outputs of up to 5
A are common.
Take a look at the Javelin stamp. It uses a switching regulator.
Jason
--- In basicstamps@y..., "Earl Bollinger" <earlwbollinger@a...> wrote:
> I think the problem is at 50mhz it draws about 140-160ma.
> Thus it needs a TO-220 voltage regulator to run at that speed.
> You'd likely have to have a small heat sink on the regulator
> to keep it from overheating too.
> Speed typically means more power consumption.
> They'd have to make the chip without a regulator, thus actually it
may be
> better to make it a OEM version and let the user manufacture their
own PCB's
> for it. Actually, a 75mhz OEM version would be sweeter.
>
>
>
Original Message
> From: jbirnsch [noparse][[/noparse]mailto:jbirnsch@v...]
> Sent: Thursday, November 21, 2002 12:48 PM
> To: basicstamps@y...
> Subject: [noparse][[/noparse]basicstamps] Re: The new BS2pe model
>
>
> How about for those speed hungry stampers a verson of the BS2p40
> running at 50 Mhz. The ubicom data sheet indicates it is supported.
> Changing some timing parameters for pause, debug, ect seems like it
> wouldn't take much effort. A power supply design change may be
> required to support the ubicom at 50 Mhz. IIRC the Javelin stamp
uses
> a switching supply because of the power it requires. A little
cutting
> and pasting of schematics and some code tweaks and you could sell a
> speed demon for $130. I would buy a few. Also, will the interpter
> chip for the BS2pe be available to buy in the furure?
>
> Jason
>
> > >The BS2pe is a low-current version of the BS2p. Here are some
> specifics for
> > >those that are interested:
> > >
> > >* Package: 24-pin DIP
> > >* Environment: 0 - 70 C (32 - 158 F)
> > >* Microcontroller: Scenix SX48AC
> > >* Processor Speed: 8 MHz, Turbo
> > >* Program Execution Speed: ~6000 instructions/second
> > >* RAM Size: 38 Bytes (12 I/O, 26 variables)
> > >* Scratchpad RAM: 128 Bytes
> > >* EEPROM (Program) Size: 8 x 2K, ~4000 instructions (slots 0 - 7)
> > >* EEPROM (Storage) Size: 8 x 2K (slots 8 - 15)
> > >* I/O Pins: 16 + 2 dedicated serial (programming port)
> > >* Voltage Requirements: 5 - 12 vdc
> > >* Current draw @ 5V: 15 mA Run / 60 uA Sleep
> > >* PBASIC Commands: 55
> > >
> > >Some important notes:
> > >
> > >The BS2pe has 16 banks, but only eight can be used for programs.
> The other
> > >eight are available for run-time storage and retrieval of data.
> The storage
> > >slot is selected with STORE, then WRITE and READ can be used.
> > >
> > >The BS2pe is not fast enough to Overdrive 1-Wire communications -
-
> standard
> > >1-Wire comm speed is okay.
> > >
> > >The BS2pe is targeted at datalogging apps, but with it's feature
> set and low
> > >current operation, it is great for robotics and other battery-
> powered
> > >applications.
> > >
> > >-- Jon Williams
> > >-- Applications Engineer, Parallax
> > >
> > >
> > >In a message dated 11/21/02 3:35:15 AM Central Standard Time,
> > >trygve.henriksen@v... writes:
> > >
> > >
> > > > Greetings!
> > > >
> > > > How about a bit more info about this chip?
> > > >
> > > > It says it has 32KB EEPROM, but how is it organised?
> > > >
> > > > Speed?
> > > >
> > > > Power consumption?
> > > >
> > > > What about Working temperatures?
> > > > (I could use a BS2p with extended temperature range :-)
> > > >
> > > Any other differences?
>
>
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It was to power a BS2Pxxx running at 50-75mhz.
At that clock speed a Scenix Ubicom chip (which is what the BS2p uses) sucks
about 140-225ma of current at idle.
Obviously the only logical course is to use a OEM chip set and make your own
PCB for it.
A TO-220 like package at least, would be needed because of the power drain.
A Switching regulator is nice but they usually are much more expensive.
Especially having to provide
about 500ma at the least to the PCB.
Original Message
From: Trygve Henriksen [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=IWUllg4VIyIMnWobVuJ576nB2KMGU3FnpmbbsMc8xKxeclWkyFd2qgfKx7fcTUdmw9eM6b6AVzvCayJv0klhgf6i]trygve.henriksen@v...[/url
Sent: Friday, November 22, 2002 2:05 AM
To: 'basicstamps@yahoogroups.com'
Subject: SV: [noparse][[/noparse]basicstamps] Re: The new BS2pe model
Greetings!
Do you know what a switching regulator with associated components costs?
Hands up everyone who would pay $100 for the BS2px(x for eXtreme [noparse]:)[/noparse]
An alternative would be to use an external, regulated PSU...
:-)
Trygve
Opprinnelig melding
Fra: jbirnsch [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=BqT9uiTFJ3HzkyOkzKCT7QJf0V_VZJqy_vXVI5dYn6cwQ03cloHpjO8deUXe87_dqSLyv1Ke]jbirnsch@v...[/url
Sendt: 22. november 2002 05:15
Til: basicstamps@yahoogroups.com
Emne: [noparse][[/noparse]basicstamps] Re: The new BS2pe model
TO-220 linear regulator!!!!!!!! Thats 1/3 the size of a stamp
alone!!!
Step into the realm of switching regulators. A SOT23-5 switching
regulator switching at 1.4 Mhz with an output current of 400 mA at 5V
and a max input voltage of 12 V can be 90% efficient and take up less
board space that the body of your TO-220. Think small. Who needs a
heatsink??? With an 8 pin SOIC switching regulator outputs of up to 5
A are common.
Take a look at the Javelin stamp. It uses a switching regulator.
Jason
To UNSUBSCRIBE, just send mail to:
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I'm talking about the onboard power supply that the stamp has, not an
external supply used to power the stamp. If you apply 7.5V to Vin on
the stamp, it must regulate it down to 5V. Currently the BS2p40 uses
a LT1121 which has 150 mA output. If you take a look at the Javelin
stamp the onboard regulator is a switching supply because of the
current it requires. An external regulator could be anything you have
laying around the lab such as linear or switching for supplying 5 V
to the Vdd pin of the stamp.
The max frequency that the SX48 can run at is 50Mhz. Look at page 25
of the SX48 datasheet. Sitting idle at 50 Mhz the SX48 uses about 80
mA. You could get buy with a 300 mA supply for the onboard regulator.
http://www.ubicom.com/pdfs/products/sx/processor/SX-DDS-SX4852BD-
14.pdf
Look at page 24 of the Javelin Manual PDF for information of the
regulator it uses.
http://www.parallax.com/Downloads/Javelin/Javelin_Stamp_Manual_v1.0a.p
df
Jason
--- In basicstamps@y..., "Earl Bollinger" <earlwbollinger@a...> wrote:
> You left out the important part in your snipping.
> It was to power a BS2Pxxx running at 50-75mhz.
> At that clock speed a Scenix Ubicom chip (which is what the BS2p
uses) sucks
> about 140-225ma of current at idle.
> Obviously the only logical course is to use a OEM chip set and make
your own
> PCB for it.
> A TO-220 like package at least, would be needed because of the
power drain.
> A Switching regulator is nice but they usually are much more
expensive.
> Especially having to provide
> about 500ma at the least to the PCB.
>
>
>
Original Message
> From: Trygve Henriksen [noparse][[/noparse]mailto:trygve.henriksen@v...]
> Sent: Friday, November 22, 2002 2:05 AM
> To: 'basicstamps@y...'
> Subject: SV: [noparse][[/noparse]basicstamps] Re: The new BS2pe model
>
>
> Greetings!
>
> Do you know what a switching regulator with associated components
costs?
>
> Hands up everyone who would pay $100 for the BS2px(x for eXtreme [noparse]:)[/noparse]
>
> An alternative would be to use an external, regulated PSU...
>
> :-)
> Trygve
>
>
Opprinnelig melding
> Fra: jbirnsch [noparse][[/noparse]mailto:jbirnsch@v...]
> Sendt: 22. november 2002 05:15
> Til: basicstamps@y...
> Emne: [noparse][[/noparse]basicstamps] Re: The new BS2pe model
>
>
> TO-220 linear regulator!!!!!!!! Thats 1/3 the size of a stamp
> alone!!!
>
> Step into the realm of switching regulators. A SOT23-5 switching
> regulator switching at 1.4 Mhz with an output current of 400 mA at
5V
> and a max input voltage of 12 V can be 90% efficient and take up
less
> board space that the body of your TO-220. Think small. Who needs a
> heatsink??? With an 8 pin SOIC switching regulator outputs of up to
5
> A are common.
>
> Take a look at the Javelin stamp. It uses a switching regulator.
>
> Jason
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@y...
> from the same email address that you subscribed. Text in the
Subject and
> Body of the message will be ignored.
>
>
> Your use of Yahoo! Groups is subject to
http://docs.yahoo.com/info/terms/
>Thus it needs a TO-220 voltage regulator to run at that speed.
>You'd likely have to have a small heat sink on the regulator
>to keep it from overheating too.
>Speed typically means more power consumption.
>They'd have to make the chip without a regulator, thus actually it may be
>better to make it a OEM version and let the user manufacture their own PCB's
>for it. Actually, a 75mhz OEM version would be sweeter.
The BS2sx is in fact already an SX28 chip clocked at 50mhz, and it
pulls about 65 milliamps. That is still within the capability of the
LT1121 regulator, so long as Vin is 9 volts or less. I don't think
the SX48 chip running turbo at 50 mhz would draw too much more
current than that. The data sheet shows 82 milliamps at 50mhz/5
volts. Run it at 3 volts, and that drops to 35 milliamps. So I'd
guess a BS2px would be possible in the same format as the other
stamps.
-- Tracy
I stand corrected on the current consumption, technically it can't really
go over 150ma.
jbirnsch:
But at 75mhz it does draw about 150ma max. (about 700mw).
I'd love to have it run at 75mhz, with 64k (128k would be better) of program
ROM for the interpreter to use.
SX48 specs that I have:
Section 1.2 (pg 3) shows DC to 75hz, Section 17.2 (pg 51) shows current
consumption at 50 and 75mhz.
That would be neat, run flat out at 75mhz, no PIC compatibility clock
division stuff.
But I doubt the little SMT LT1121 voltage regulator would like 75mhz too
much at up to 150ma.
Which gets me back to a custom OEM version of the BS2SX_turbo version with
room for a bigger voltage regulator with a heat sink maybe.
Well a 24 pin package might still be do-able but the regulator would have to
be off from the 24 pin package though.
Original Message
From: jbirnsch [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=TV3VzdbS589kOC1gjX2Z1pa5E3GhAUTF9w4TE_l53aycbFO0KqHLDmlEYkklrgQ-76M89GJdAA]jbirnsch@v...[/url
Sent: Friday, November 22, 2002 1:43 PM
To: basicstamps@yahoogroups.com
Subject: [noparse][[/noparse]basicstamps] Re: The new BS2pe model
Earl,
I'm talking about the onboard power supply that the stamp has, not an
external supply used to power the stamp. If you apply 7.5V to Vin on
the stamp, it must regulate it down to 5V. Currently the BS2p40 uses
a LT1121 which has 150 mA output. If you take a look at the Javelin
stamp the onboard regulator is a switching supply because of the
current it requires. An external regulator could be anything you have
laying around the lab such as linear or switching for supplying 5 V
to the Vdd pin of the stamp.
The max frequency that the SX48 can run at is 50Mhz. Look at page 25
of the SX48 datasheet. Sitting idle at 50 Mhz the SX48 uses about 80
mA. You could get buy with a 300 mA supply for the onboard regulator.
http://www.ubicom.com/pdfs/products/sx/processor/SX-DDS-SX4852BD-
14.pdf
Look at page 24 of the Javelin Manual PDF for information of the
regulator it uses.
http://www.parallax.com/Downloads/Javelin/Javelin_Stamp_Manual_v1.0a.p
df
Jason
--- In basicstamps@y..., "Earl Bollinger" <earlwbollinger@a...> wrote:
> You left out the important part in your snipping.
> It was to power a BS2Pxxx running at 50-75mhz.
> At that clock speed a Scenix Ubicom chip (which is what the BS2p
uses) sucks
> about 140-225ma of current at idle.
> Obviously the only logical course is to use a OEM chip set and make
your own
> PCB for it.
> A TO-220 like package at least, would be needed because of the
power drain.
> A Switching regulator is nice but they usually are much more
expensive.
> Especially having to provide
> about 500ma at the least to the PCB.
>
>
>
Original Message
> From: Trygve Henriksen [noparse][[/noparse]mailto:trygve.henriksen@v...]
> Sent: Friday, November 22, 2002 2:05 AM
> To: 'basicstamps@y...'
> Subject: SV: [noparse][[/noparse]basicstamps] Re: The new BS2pe model
>
>
> Greetings!
>
> Do you know what a switching regulator with associated components
costs?
>
> Hands up everyone who would pay $100 for the BS2px(x for eXtreme [noparse]:)[/noparse]
>
> An alternative would be to use an external, regulated PSU...
>
> :-)
> Trygve
>
>
Opprinnelig melding
> Fra: jbirnsch [noparse][[/noparse]mailto:jbirnsch@v...]
> Sendt: 22. november 2002 05:15
> Til: basicstamps@y...
> Emne: [noparse][[/noparse]basicstamps] Re: The new BS2pe model
>
>
> TO-220 linear regulator!!!!!!!! Thats 1/3 the size of a stamp
> alone!!!
>
> Step into the realm of switching regulators. A SOT23-5 switching
> regulator switching at 1.4 Mhz with an output current of 400 mA at
5V
> and a max input voltage of 12 V can be 90% efficient and take up
less
> board space that the body of your TO-220. Think small. Who needs a
> heatsink??? With an 8 pin SOIC switching regulator outputs of up to
5
> A are common.
>
> Take a look at the Javelin stamp. It uses a switching regulator.
>
> Jason
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@y...
> from the same email address that you subscribed. Text in the
Subject and
> Body of the message will be ignored.
>
>
> Your use of Yahoo! Groups is subject to
http://docs.yahoo.com/info/terms/
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