ARM Technical Support Knowledge Articles

WHAT DOES P1.0 DO?

Applies to: MCBx51 Evaluation Board

Answer


Information in this article applies to:


QUESTION

When I reset my MCB251 Board, P1.0 is off and all other LEDs are on. Why?

ANSWER

On reset, the MCB251 sets P1.0 to indicate whether the internal RS232 or the external RS232 is used.

The P1.0 status LED is ON when the internal RS232 interface is used for the Monitor/PC Interface and OFF when the external RS232 interface is used for the Monitor/PC interface.

MORE INFORMATION

Article last edited on: 2006-11-19 09:18:56

Rate this article

[Bad]
|
|
[Good]
Disagree? Move your mouse over the bar and click

Did you find this article helpful? Yes No

How can we improve this article?

Link to this article
Copyright © 2011 ARM Limited. All rights reserved. External (Open), Non-Confidential