I am trying to make a temperature scanner with ADuC845(8051 core). sir I have checked the following voltage levels at following pins:
1) AVdd=5.0V 2) AGND=0.0V 3) DVdd=4.57V wrt DGND 4) PSEN= 4.31V 5) ALE= 4.55V 6) XTAL1 and XTAL2= 4.55V
the current drawn by the board when LCD IS NOT CONNECTED is 54mA and the current drawn by the board when LCD is removed is 8.5mA
in both the above cases the current drawn is seemingly higher than max ratings. what is the probable fault and the solution???
It would have been better to have continued in the original thread: http://www.keil.com/forum/docs/thread16128.asp#msg82076