MMA8452Q

[georgek]

Hi,

I am currently developing a DSC application with the MMA8452Q accelerometer.

After power on reset, is the INT1/2 pin value "HIGH"?

Thanks for your clarification,

George

[TomasVaverka · Accepted solution]

George,

The interrupt pins can be configured to be push-pull or open drain and can be either active high or active low. This is done in the CTRL_REG3 (0x2C) register. Bit 0 (PP_OD) sets the configuration of the interrupt pins to be open drain or push pull and bit 1 (IPOL) sets the polarity, either active high or active low.

Default configuaration is push-pull (PP_OD = 0) and active low (IPOL = 0) as shown in table 60 of the datasheet, so after power-on reset the INT1/2 pins will be high – inactive, as you correctly stated.

I hope this helps.

Regards,

Tomas

[georgek]

Thanks for your prompt and clear response, Tomas!

Best regards,

George

[TomasVaverka]

You are welcome, George.

Have a good day and thanks for using Freescale community.

Regards,

Tomas