CY8CMBR3108 Buzzer Output - Push-Pull or Open Drain?

[Abdoulah]

Hello,

I have a question regarding the buzzer output of the CY8CMBR3108. The datasheet at https://www.cypress.com/file/46236/download does not specify whether the buzzer output is push-pull or open drain. Figure 8 in the datasheet appears to suggest that the output signal is open drain. However, when I measure the voltage on the buzzer pin without anything connected to it, it is high. 

Please note that I configured the CY8CMBR3108 to have a buzzer output signal on that pin.

Any help would be appreciated.

Thank you

[Hari · Accepted solution]

Hi @Abdoulah 

The BUZZER pin is driven by a PWM signal and therefore, the drive mode would be strong drive. The buzzer will be pulled high till there is some signal on the CapSense line. 

Best regards, 
Hari