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5680x PINS -> electrical specifications ?

Started by Mariano Filippa January 26, 2004
Does anybody know where can I get a good electrical description of the Motorola DSP 5680x pins ?
 
I have to interface the DSP with components that work with 5V. I guess that the DSP will never take 5V.
 
In the case of the logic ICs that I use (74HC and 74ACT families), they have a clamping diode with 10mA max current. Therefore I can supply them with 3.3V and put 5V in their inputs using current limiting resistors.
 
Is this available in 5680x DSPs ? can this be applied to all digital and analog pins ? If not, what do you do if you need voltage level translation?
 
Thanks!
Mariano



Hi,
 
If you want to traslate voltage levels you can use a LVCC3245 part from Texas Instruments. This chip translates from 3.3V to 5V and viceversa.
 
I hope this could be useful.

Mariano Filippa <m...@fibertel.com.ar> wrote:
Does anybody know where can I get a good electrical description of the Motorola DSP 5680x pins ?
 
I have to interface the DSP with components that work with 5V. I guess that the DSP will never take 5V.
 
In the case of the logic ICs that I use (74HC and 74ACT families), they have a clamping diode with 10mA max current. Therefore I can supply them with 3.3V and put 5V in their inputs using current limiting resistors.
 
Is this available in 5680x DSPs ? can this be applied to all digital and analog pins ? If not, what do you do if you need voltage level translation?
 
Thanks!
Mariano


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FYI, the DSP56F80x family is 5 volt tolerant on the I/O pins.
----- Original Message -----
From: Mariano Filippa
To: m...@yahoogroups.com
Sent: Monday, January 26, 2004 11:15 AM
Subject: [motoroladsp] 5680x PINS -> electrical specifications ?

Does anybody know where can I get a good electrical description of the Motorola DSP 5680x pins ?
 
I have to interface the DSP with components that work with 5V. I guess that the DSP will never take 5V.
 
In the case of the logic ICs that I use (74HC and 74ACT families), they have a clamping diode with 10mA max current. Therefore I can supply them with 3.3V and put 5V in their inputs using current limiting resistors.
 
Is this available in 5680x DSPs ? can this be applied to all digital and analog pins ? If not, what do you do if you need voltage level translation?
 
Thanks!
Mariano


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56F series have 5v tolerant I/O on most pins.  Download the data sheet (not the users manual) for the device of interest, it will include electrical specs.
----- Original Message -----
From: Mariano Filippa
To: m...@yahoogroups.com
Sent: Monday, January 26, 2004 12:15 PM
Subject: [motoroladsp] 5680x PINS -> electrical specifications ?

Does anybody know where can I get a good electrical description of the Motorola DSP 5680x pins ?
 
I have to interface the DSP with components that work with 5V. I guess that the DSP will never take 5V.
 
In the case of the logic ICs that I use (74HC and 74ACT families), they have a clamping diode with 10mA max current. Therefore I can supply them with 3.3V and put 5V in their inputs using current limiting resistors.
 
Is this available in 5680x DSPs ? can this be applied to all digital and analog pins ? If not, what do you do if you need voltage level translation?
 
Thanks!
Mariano


_____________________________________
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Nachricht
Thanks, I found it in the Technical Data (datasheet?).
 
Thanks everybody for the prompt response
Mariano
 
----- Original Message -----
From: Bende Georg
To: Mariano Filippa
Sent: Monday, January 26, 2004 12:38 PM
Subject: AW: [motoroladsp] 5680x PINS -> electrical specifications ?

The DSP GPIO's are 5V tolerant. ADC is not. I can send you the Technical Datasheet of the 805, or you can download it from Motorola.
 
 
Georg Bende
Softwareentwickler
Abteilung Elektronik
Dr. Fritz Faulhaber GmbH & Co KG
Daimlerstr. 23
71101 Schaich
Tel: +49 7031 638294
-----Ursprgliche Nachricht-----
Von: Mariano Filippa [mailto:m...@fibertel.com.ar]
Gesendet: Montag, 26. Januar 2004 18:16
An: m...@yahoogroups.com
Betreff: [motoroladsp] 5680x PINS -> electrical specifications ?

Does anybody know where can I get a good electrical description of the Motorola DSP 5680x pins ?
 
I have to interface the DSP with components that work with 5V. I guess that the DSP will never take 5V.
 
In the case of the logic ICs that I use (74HC and 74ACT families), they have a clamping diode with 10mA max current. Therefore I can supply them with 3.3V and put 5V in their inputs using current limiting resistors.
 
Is this available in 5680x DSPs ? can this be applied to all digital and analog pins ? If not, what do you do if you need voltage level translation?
 
Thanks!
Mariano


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Hi.
You can find this information in the file DSP56F80x/D, this file contain the technical data about DSp56F80x.
 
For DSP56F801 you can use this link for download the file
http://e-www.motorola.com/files/dsp/doc/data_sheet/DSP56F801.pdf
 
changing X by the appropriate number
http://e-www.motorola.com/files/dsp/doc/data_sheet/DSP56F80X.pdf  

Mariano Filippa <m...@fibertel.com.ar> wrote:
Does anybody know where can I get a good electrical description of the Motorola DSP 5680x pins ?
 
I have to interface the DSP with components that work with 5V. I guess that the DSP will never take 5V.
 
In the case of the logic ICs that I use (74HC and 74ACT families), they have a clamping diode with 10mA max current. Therefore I can supply them with 3.3V and put 5V in their inputs using current limiting resistors.
 
Is this available in 5680x DSPs ? can this be applied to all digital and analog pins ? If not, what do you do if you need voltage level translation?
 
Thanks!
Mariano


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Cordialmente,

Oscar Javier Tadeo Jaramillo Galeano
Nit: 98665185-4
Telefono: 300-779-60-62



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