Publish Date: 1990
Author Unknown
The power-good signal is a TTL-compatible high level for normal
operation or a low level for fault conditions. If the power-good signal
works well, then the system will function properly. Otherwise the data
setting in CMOS RAM will be lost. The following list gives you some
guidelines for choosing the right power supply:
- The power-good signal should have a turn-on delay of at least 200ms,
but not longer than 500ms when the power is on (This means that the
power-good signal goes to a high level later than +5V). - The power-good signal goes to a low level at least 100ms before +5V
falls below the regulation limits when the power is off.