8.4 Device Functional Modes
The following tables show the state of the output and the status of the part under various conditions.
Table 1. SVS-1 Truth Table
CONDITION |
OUTPUT |
STATUS |
MR = Low |
SENSE1 < VITN |
RESET1 = Low |
Reset asserted |
MR = Low |
SENSE1 > VITN |
RESET1 = Low |
Reset asserted |
MR = High |
SENSE1 < VITN |
RESET1 = Low |
Reset asserted |
MR = High |
SENSE1 > VITN |
RESET1 = High |
Reset released after delay |
Table 2. SVS-2 Truth Table
CONDITION |
OUTPUT |
STATUS |
SENSE2 < VITN |
RESET2 = Low |
Reset asserted |
SENSE2 > VITN |
RESET2 = High |
Reset released after delay |
Table 3. SVS-3 Truth Table
CONDITION |
OUTPUT |
STATUS |
SENSE3 < VITN |
RESET3 = Low |
Reset asserted |
SENSE3 > VITN |
RESET3 = High |
Reset released after delay |
Table 4. SVS-4 Truth Table
CONDITION |
OUTPUT |
STATUS |
SENSE4L < VITN |
SENSE4H > VITP |
RESET4 = Low |
Reset asserted |
SENSE4L < VITN |
SENSE4H < VITP |
RESET4 = Low |
Reset asserted |
SENSE4L > VITN |
SENSE4H > VITP |
RESET4 = Low |
Reset asserted |
SENSE4L > VITN |
SENSE4H < VITP |
RESET4 = High |
Reset released after delay |
Table 5. Watchdog Timer (WDT) Truth Table
CONDITION |
OUTPUT |
STATUS |
WDO |
WDO |
RESET1 |
WDI PULSE INPUT |
Low |
High |
Asserted |
Toggling |
WDO = low |
Remains in WDT time-out |
Low |
High |
Asserted |
610 ms after last WDI↑ or WDI↓ |
WDO = low |
Remains in WDT time-out |
Low |
High |
Released |
Toggling |
WDO = low |
Remains in WDT time-out |
Low |
High |
Released |
610 ms after last WDI↑ or WDI↓ |
WDO = low |
Remains in WDT time-out |
High |
Low |
Asserted |
Toggling |
WDO = high |
Normal operation |
High |
Low |
Asserted |
610 ms after last WDI↑ or WDI↓ |
WDO = high |
Normal operation |
High |
Low |
Released |
Toggling |
WDO = high |
Normal operation |
High |
Low |
Released |
610 ms after last WDI↑ or WDI↓ |
WDO = low |
Enters WDT timeout |