Lockbits
| Bit7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| LOCKBIT[7:0] | |||||||
| AccessR | R | R | R | R | R | R | R |
| Resetx | x | x | x | x | x | x | x |
Lockbits
The UPDI cannot access the system bus when the part is locked. The UPDI can then only read the internal Control and Status (CS) space of the UPDI and the Asynchronous System Interface (ASI). Refer to the UPDI section for additional details.
| Value | Description |
|---|---|
| 0xC5 | Valid key - the device is open |
| other | Invalid key - the device is locked |