| ??? 07/27/06 15:08 Read: times |
#121168 - No mistery, but contradiction! Responding to: ???'s previous message |
Eric said:
It remains a mistery why the uP is allowed to run down to 1.4 V (datasheet specifies 2.7V min) It seems to behave as shown in figure 7-1: There's no brown-out reset, only a brown-out detection. And the latter is needed to delay the inactivation of reset when Vcc goes high again but is still under the threshold of BOD. On power-down, an internal reset is not invoked, when Vcc reaches the threshold of BOD, but only when Vcc falls under 1.4V, which is the threshold of POR. So, not the BOD seems to invoke an internal reset but the POR! The text in chapter 7.1 and the figure 7-1 are clearly in contradiction! Kai |
| Topic | Author | Date |
| AT89S8253 supervisor worse than R/C ??? | 01/01/70 00:00 | |
| not 'this' | 01/01/70 00:00 | |
| gets better... | 01/01/70 00:00 | |
| can you please be more specific? | 01/01/70 00:00 | |
No mistery, but contradiction! | 01/01/70 00:00 |