RL78 ID code check fails

Renesas RL78 devices have On-Chip debug security ID setting area. The values programmed to this device memory area are compared to the values of the bytes set in the winIDEA. If these two do not match, you get different effects when trying to debug this device like:

• RL78 ERROR Unlock ID code check failed message in the Progress window
• Download verification errors
• NO CONNECTION winIDEA Debug status
• etc.

Possible solution

1. Enable Demo Mode via Tools | Demo Mode. 

2. Download and check the downloaded values on memory addresses:

• 0xC4 - 0xCD in case of a 10-byte ID code, or
• 0xC6 - 0xD5 in case of a 16-byte ID code.

3. Set the same values in the On-chip debug Unlock ID code field in the Hardware | CPU Options | SoC.

More resources

• Supported RL78 devices
• Renesas RL78 - winIDEA Help