I am using TLV3401 to get the output of the Motion Sensor and Sound/Clap sensor as attached.I am giving 3.3 volt to the opamp and the comaprator.
Now Problem when i connect the R32 to my micro controller's (STM32F030R8T6) Wakeup Pin (PA0) my output voltage at R32, R86, R87 & R88 is becoming either 2volt or 0 Volt. But when i remove those resistors and check the output output is 3.3V (I am getting Pulse at those point which is correct)
Can you please help me to figure out why my output voltage is dropped down when i connect it to the Wakeup pin of the controller. Same time when i connect it to any other pin of the micro controller it is not dropping down, in short if i connect the output of the Motion circuit and the SOUND/CLAP sensor to wakeup pin of uC it dropped down and i am using it to wakeup the uC.
Krunal ShahExtracted pages from LB_PERIPHERAL_1.1.0.pdf