Dear All,
Need Help!
Iwant to know whether the chips designated "LF" (low voltages devices, Example
:PIC18LF2580 ) can be used as normal "F" designated chips( Example: PIC18F2580).
I know the vice-versa is not true.Whether all the ports,I2C,SPI,SERIAL n so
onetc of "LF" chips function as standard "F" chip at +5V. I mean are there
any restrictions or limitations. Can i replace PIC18F2580 from the circuit and
use PIC18LF2580 at + 5V. I searched the datasheet but didn't find anything
important regarding this.....
Thanks
Amit
Low voltage "LF" chips can be used as normal "F" designated chips ??
Started by ●July 25, 2009
Reply by ●July 25, 20092009-07-25
I believe an LF chip is the same as an F chip but has passed tests for
operation at low voltage. Other than allowing operation at low voltage, I
see no difference in the datasheet between an LF and an F part. I've gone
ahead and standardized on the LF part when the same chip (other than the
L) is used in different products that operate at 5V and 3.3V.
Harold
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operation at low voltage. Other than allowing operation at low voltage, I
see no difference in the datasheet between an LF and an F part. I've gone
ahead and standardized on the LF part when the same chip (other than the
L) is used in different products that operate at 5V and 3.3V.
Harold
--
FCC Rules Updated Daily at http://www.hallikainen.com - Advertising
opportunities available!
Reply by ●August 8, 20092009-08-08
> I believe an LF chip is the same as an F chip but has
passed tests for
> operation at low voltage. Other than allowing operation at low voltage, I
> see no difference in the datasheet between an LF and an F part. I've gone
> ahead and standardized on the LF part when the same chip (other than the
> L) is used in different products that operate at 5V and 3.3V.
If you read the data sheet carefully you could conclude that the LF
chips are more limited in some aspects. A Microchip person once told me
that this is true *only *within the power supply range that is not
supported by teh standard F chips*. Within the power supply range
supported by an F chip an LF chip will behave the same.
--
Wouter van Ooijen
-- -------
Van Ooijen Technische Informatica: www.voti.nl
consultancy, development, PICmicro products
docent Hogeschool van Utrecht: www.voti.nl/hvu
> operation at low voltage. Other than allowing operation at low voltage, I
> see no difference in the datasheet between an LF and an F part. I've gone
> ahead and standardized on the LF part when the same chip (other than the
> L) is used in different products that operate at 5V and 3.3V.
If you read the data sheet carefully you could conclude that the LF
chips are more limited in some aspects. A Microchip person once told me
that this is true *only *within the power supply range that is not
supported by teh standard F chips*. Within the power supply range
supported by an F chip an LF chip will behave the same.
--
Wouter van Ooijen
-- -------
Van Ooijen Technische Informatica: www.voti.nl
consultancy, development, PICmicro products
docent Hogeschool van Utrecht: www.voti.nl/hvu