Datasheet

Power Up and Down
2-11
Test Setup and Results
Figure 2−14. Power Down With Ratiometric Sequencing
V
O
I/O 500 mV/div
t − Time − 1 ms/div
V
O
Core 500 mV/div
If jumper JP2 is set so that R8 is connected in parallel to R6, the core voltage
rises first during power up and falls second during power down. The
waveforms with this type of sequencing are shown in Figure 2−15 and
Figure 2−16.
Figure 2−15. Power Up With Core Voltage Rising First
V
O
I/O 500 mV/div
t − Time − 1 ms/div
V
O
Core 500 mV/div