Note: All ports other than PA3 are configured as normal input ports.

Figure 2-1 Power Outage Backup Example 1

— Waveforms during operation

Figure 2-2 gives the waveforms relevant to the operation of the above circuit. There are three main states: (a)

power-on reset sequence, (b) momentary break in main power supply, and (c) recovery from power outage

backup state.

Figure 2-2 Waveforms Relevant to Operation of Circuit Example 1

No. 5117-34/39

LC6529N, LC6529F, LC6529L

Unit (resistance:

Ω)