![](http://pdfasset.owneriq.net/6/b9/6b987e72-a4f4-4ccb-87ec-e3052083ac5a/6b987e72-a4f4-4ccb-87ec-e3052083ac5a-bge2.png)
RESET S3F80P5_UM_ REV1.00
Normal Operating Mode
V
DD
V
LVD
tWAIT
V
POR
Stop Mode (LVD off)
Key-in
Normal Operating Mode
V
DD
V
LVD
tWAIT
V
POR
Stop Mode (LVD off)
Key-in
Back-up Mode
Reset pulse generated,
oscillation start
LVD ON
LVD ON
Figure 8-8. Timing Diagram for Back-up Mode Input in Stop Mode
8-10