Selecting Supervisor IC

[premkumar9]

Hi
I plan to use 89C2051 uC along with my GSM module which is working at 3.8V DC. From the catalog of 89C2051, I understand that it can work at 3.8V. So I plan to set my DC voltage at 3.8V. But the supervisor IC (for resetting and supervising uC) available with me is DS1232 which require 5V DC.
If possible, I would like to use a single 3.8V DC supply. What can I do?

 

[Ian Rogers]

Dallas (as you probably know) is now maxim! There are literally hundreds of maxim derivatives on the supervisor circuits...You will need to go here..**broken link removed** and select the best one for your circuit.

I wish I could help further (I don't use them)

Ian

 

[premkumar9]

That is true. For small quantities, I usually buy from the market. Here this DS1232 is the one I could locate in the market. I could see supervisor ICs working at 3.8V in maxim site. But could not locate in shop. So thought of seeking the best method to use DS1232 itself.

 

[Ian Rogers]

On the .netmf boards they have an 800ma 5v reg and a 800ma 3,3v reg perhaps you can just do the same.

Ian