Hi All,
Could you please support me below circuit ?
I used S80745 open drain device.
The output of S80745 is connected to RESET pin of ATMEGA103.
My understanding is -
1. 4.7K and 100n provides power ON reset to ATMEGA103
Is this correct ?
2. Voltage detection using S80745
I see the plot of S80745,
When VDD<(-VDET), Vout = Low , For me since reset pin of MCU is low . MCU will stop working.
When VDD>(+VDET), Vout = How , For me since reset pin of MCU is high, MCU goes in normal operation mode.
At the end i am trying to understand the what is the purpose of using S80745 with MCU.
I do not understand how MCU will detect the voltage and what is purpose of it ?
Thanks in Advance !

Could you please support me below circuit ?
I used S80745 open drain device.
The output of S80745 is connected to RESET pin of ATMEGA103.
My understanding is -
1. 4.7K and 100n provides power ON reset to ATMEGA103
Is this correct ?
2. Voltage detection using S80745
I see the plot of S80745,
When VDD<(-VDET), Vout = Low , For me since reset pin of MCU is low . MCU will stop working.
When VDD>(+VDET), Vout = How , For me since reset pin of MCU is high, MCU goes in normal operation mode.
At the end i am trying to understand the what is the purpose of using S80745 with MCU.
I do not understand how MCU will detect the voltage and what is purpose of it ?
Thanks in Advance !

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