Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

ds89c450 connection problem

Status
Not open for further replies.

zofito

Newbie level 3
Newbie level 3
Joined
Dec 13, 2011
Messages
3
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,296
Hi all,


I'm trying to implement a development board for my ds89c450.
I implement the circuit in attach but I cannot connect my micro with the PC.
I got this message from MTK2: Unable to establish communication with target.
Check connection to target system or consult help files.

I´m already did everything that you talk in another posts in the forum, but nothing make this work.

I think that the problem could be because of the 0.1u capacitors in max232, but in datasheet, they talk about that possibility.All the capacitores in max232 are polyester ones. That could be another problem.

Can you help me?

Greetings :)
 

Attachments

  • schematic_1.jpg
    schematic_1.jpg
    101.2 KB · Views: 64

How can I test the max232?
 

Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top