Jul 5, 2011 #1 C cheenu02 Junior Member level 3 Joined Jun 16, 2011 Messages 31 Helped 1 Reputation 2 Reaction score 1 Trophy points 1,288 Activity points 1,500 hi, The maximum current drive by P1.5,P1.6 and P1.7 is 16mA each in P89v51RD and I want to know the maximum current drive by other ports . Help me Thank you.
hi, The maximum current drive by P1.5,P1.6 and P1.7 is 16mA each in P89v51RD and I want to know the maximum current drive by other ports . Help me Thank you.
Jul 5, 2011 #2 alexan_e Administrator Joined Mar 16, 2008 Messages 11,888 Helped 2,021 Reputation 4,158 Reaction score 2,031 Trophy points 1,393 Location Greece Activity points 64,371 I'm sure it is inside the datasheet but you have to provide a link to the datasheet so we can check Alex
I'm sure it is inside the datasheet but you have to provide a link to the datasheet so we can check Alex
Jul 5, 2011 #3 ckshivaram Advanced Member level 6 Joined Apr 21, 2008 Messages 5,060 Helped 2,150 Reputation 4,306 Reaction score 2,088 Trophy points 1,393 Location villingen (Germany) / Bangalore Activity points 30,086 all the port pins will draw 20mA of current.. maximum is 35mA which is not recommended..
Jul 6, 2011 #4 C cheenu02 Junior Member level 3 Joined Jun 16, 2011 Messages 31 Helped 1 Reputation 2 Reaction score 1 Trophy points 1,288 Activity points 1,500 alexan_e said: I'm sure it is inside the datasheet but you have to provide a link to the datasheet so we can check Alex Click to expand... This is the link for P89v51rd2 datasheet.Please find this https://www.keil.com/dd/docs/datashts/philips/p89v51rd2.pdf Attachments p89v51rd2fn.pdf 334.7 KB · Views: 81
alexan_e said: I'm sure it is inside the datasheet but you have to provide a link to the datasheet so we can check Alex Click to expand... This is the link for P89v51rd2 datasheet.Please find this https://www.keil.com/dd/docs/datashts/philips/p89v51rd2.pdf
Jul 6, 2011 #5 C cheenu02 Junior Member level 3 Joined Jun 16, 2011 Messages 31 Helped 1 Reputation 2 Reaction score 1 Trophy points 1,288 Activity points 1,500 ckshivaram said: all the port pins will draw 20mA of current.. maximum is 35mA which is not recommended.. Click to expand... hi, According to the data sheet high current drive pins are P1.5,P1.6 and P1.7 only and these can drive 16ma each.Then how other pins drive more than 16ma. I am not able to understand. Please help me.
ckshivaram said: all the port pins will draw 20mA of current.. maximum is 35mA which is not recommended.. Click to expand... hi, According to the data sheet high current drive pins are P1.5,P1.6 and P1.7 only and these can drive 16ma each.Then how other pins drive more than 16ma. I am not able to understand. Please help me.
Jul 6, 2011 #6 alexan_e Administrator Joined Mar 16, 2008 Messages 11,888 Helped 2,021 Reputation 4,158 Reaction score 2,031 Trophy points 1,393 Location Greece Activity points 64,371 In page 60 maximum IOL per I/O pins P1.5, P1.6,P1.7 = 20mA maximum IOL per I/O for all other pins = 15mA but also check page 62 because there is a significant voltage drop for the output voltage at these currents. Alex
In page 60 maximum IOL per I/O pins P1.5, P1.6,P1.7 = 20mA maximum IOL per I/O for all other pins = 15mA but also check page 62 because there is a significant voltage drop for the output voltage at these currents. Alex