15.1.2.8 WRERR Bit
The WRERR bit can be used to determine if a write error occurred. WRERR will be
set if one of the following conditions occurs:
- If WR is set while the NVMADRH:NMVADRL points to a write-protected address
- A Reset occurs while a self-write operation was in progress
- An unlock sequence was interrupted
The WRERR bit is normally set by hardware, but can be set by the user for test purposes. Once set, WRERR must be cleared in software.
| Free | LWLO | Actions for PFM When WR =
1 | Comments |
|---|---|---|---|
1 | x | Erase the 32-word row of NVMADRH:NVMADRL location |
|
0 | 1 | Copy NVMDATH:NVMDATL to the write latch corresponding to NVMADR LSBs |
|
0 | 0 | Write the write-latch data to PFM row |
|