Digital resistor wish microchip 16F84

Posted on 2005-04-08
Medium Priority
Last Modified: 2013-12-10

   I am looking for a digital resistor, which I can give it 4 or 8 bit and it gives me resistance.  are there digital resistors work by serial data ?

Question by:zahiy
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LVL 55

Expert Comment

by:Jaime Olivares
ID: 13742283
Have a look to these 8-bit I2C or SPI digital potentiometers by Dallas Semiconductors:


Accepted Solution

Gladiss earned 2000 total points
ID: 13742488
Hai Zahiy
           There are so many digital potentiometers available in market from 'Analog Devices' which has a serial communication interface. Have a look at the table in this link.


Please select one from the table as per your requirement.

Author Comment

ID: 13743251
Thanks Clasiss, this is what I am looking for, but one more question, I don't see serial interface, does the SPI is the serial one ?  

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LVL 55

Expert Comment

by:Jaime Olivares
ID: 13744754
both i2c and SPI are microcontroller's serial interfaces.
LVL 55

Expert Comment

by:Jaime Olivares
ID: 13744760
BTW, my answer is similar to Gladiss's one but in another brand....

Expert Comment

ID: 13753301
Hai Zahiy
             SPI is Serial Peripheral Interface, which has a clock line and two data lines SDO(Serial Data Out) and SDI(Serial Data In)

Please refer to section 17 of this datasheet

if required see this


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