When the BOREN Configuration bits are programmed to 'b00,
the BOR is off at all times. The device start-up is not delayed by the BOR ready condition or
the VDD level.
| BOREN | SBOREN | Device Mode | BOR Mode | Instruction Execution upon: | |
|---|---|---|---|---|---|
| Release of POR | Wake-up from Sleep | ||||
11(1) |
X | X | Active | Wait for
release of BOR (BORRDY = 1) |
Begins immediately |
10 |
X | Awake | Active | Wait for
release of BOR (BORRDY = 1) |
N/A |
| Sleep | Hibernate | N/A | Wait for
release of BOR (BORRDY = 1) |
||
01 |
1 | X | Active | Wait for release of BOR (BORRDY = 1) |
Begins immediately |
| 0 | X | Hibernate | |||
00 |
X | X | Disabled | Begins immediately | |
Note:
- 1.In this specific case, “Release of POR”
and “Wake-up from Sleep”, there is no BOR ready delay in start-up. The BOR ready flag,
(BORRDY =
1), will be set before the CPU is ready to execute instructions because the BOR circuit is forced on by the BOREN bits
Figure 1. Brown-out
Situations
Note:
- 1.TPWRT delay only if the Configuration bits enable the Power-up Timer.