topic Re: Accelerometer FXLS8967AF --- Active(WAKE/SLEEP) operation concerns in Sensors

Accelerometer FXLS8967AF --- Active(WAKE/SLEEP) operation concerns

BillWu123 — Tue, 03 Feb 2026 21:29:13 GMT

HI,

I'm a new developer working on your product FXLS8967AF, and here I want to raise two questions.

①Is there any other way to enter Active(sleep) mode if I set ASLP_CNT == 0 (BT mode= GND)?

This questions occurs when I have found my friend want to use low power mode(Active/sleep mode) to wake up another chips. But after having read his code, I found that he set ASLP_CNT == 0 and he insisted on sleep mode has been activated.

②What's the difference between FXLS8967AF and FXLS8964AF ?

Best regards

Bill Wu

Re: Accelerometer FXLS8967AF --- Active(WAKE/SLEEP) operation concerns

JozefKozon — Mon, 15 Jan 2024 07:36:16 GMT

Hi Bill,

①Is there any other way to enter Active(sleep) mode if I set ASLP_CNT == 0 (BT mode= GND)?

[A] Please refer to the Table 16. in the FXLS8967AF datasheet. To enter SLEEP mode, the ASLP_CNT must be set to 1, but there are also other low power modes. STANDBY or HIBERNATE mode. Your colleague's most probably meant, that the FXLS8967AF was in STANDBY mode. After the power up, the FXLS8967AF automatically enters STANDBY mode.

②What's the difference between FXLS8967AF and FXLS8964AF ?

[A] There is a very little difference between the FXLS8967AF and FXLS8964AF. Please see below.

The FXLS8964AF has slightly higher noise, than FXLS8967AF.

The FXLS8964AF targets keyfob, and the FXLS8967AF targets non-safety automotive application other than keyfob.

The FXLS8964/67 are specifically PPAPed for automotive application,

With Best Regard,

Jozef

Re: Accelerometer FXLS8967AF --- Active(WAKE/SLEEP) operation concerns

BillWu123 — Tue, 16 Jan 2024 03:30:17 GMT

HI Jozef,

Thank you very much for your answer, it does help.

Best regards

Bill Wu

Re: Accelerometer FXLS8967AF --- Active(WAKE/SLEEP) operation concerns

JozefKozon — Tue, 16 Jan 2024 05:17:07 GMT

Hi Bill,

you are very welcome. Have a nice day.

With Best Regards,

Jozef