Keil Logo

Error 21

Summary
*** Error 21

Cannot Write To Address address

Description

This error indicates that the monitor could not write to the specified address.

Cause

This is typically caused when the monitor attempts to access and area of memory that is not mapped to a physical RAM device or when the monitor attempts to write to a read-only memory device.

  Arm logo
Important information

This site uses cookies to store information on your computer. By continuing to use our site, you consent to our cookies.

Change Settings

Privacy Policy Update

Arm’s Privacy Policy has been updated. By continuing to use our site, you consent to Arm’s Privacy Policy. Please review our Privacy Policy to learn more about our collection, use and transfers
of your data.