ALE pin of 89c52/52 | Microcontroller › 8051 › ALE pin of 89c52/52 This topic has 1 reply, 2 voices, and was last updated 11 years, 4 months ago by nikhiljain. Viewing 2 posts - 1 through 2 (of 2 total) Author Posts January 17, 2012 at 5:23 am #1738 sandeepParticipant Can we make ALE pin of 89c51/52 low or high through program? I need to use Port 0 as data only,can anyone help? If some code is available pls upload. January 20, 2012 at 9:35 am #7052 nikhiljainParticipant You cannot make the ALE pin of the microcontroller you want to use, high or low. you can make it high or low for some other microcontroller. What exactly are you trying to do? Author Posts Viewing 2 posts - 1 through 2 (of 2 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In