FXLS8967AF datasheet(24/98 Pages) NXP

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NXP Semiconductors

FXLS8967AF

3-Axis Low-g Accelerometer

Callout

Current

mode

Next mode

Transition criteria

OFF

BOOT

Apply VDD ≥ VDDmin

BOOT

Standby

BOOT_MODE = GND:

Wait TBOOT1 ms after applying VDD ≥ VDDmin; FXLS8967AF enters Standby mode

and waits for I2C/SPI commands.

BT_MODE = VDD:

Wait TBOOT2 ms after setting the INT1 / MOT_DET pin high. FXLS8967AF

automatically transitions into WAKE (

SENS_CONFIG1[ACTIVE] bit is

automatically set, see callout 7).

Standby

Hibernate

BOOT_MODE = GND:

Set

SENS_CONFIG5[HIBERNATE_EN] = 1; the device may then be woken up

only by toggling the SPI_CS_B / WAKE_UP pin.

BOOT_MODE = VDD:

The host MCU drives the MOT_DET pin low for ≥ TMOT-HIB ms to enter Hibernate

mode. The device remains in Hibernate mode as long as the MOT_DET pin

remains low.[1]

Hibernate

BOOT

BT_MODE = GND:

The host MCU must toggle the SPI_CS_B / WAKE_UP pin

BT_MODE = VDD:

FXLS8967AF exits Hibernate mode and begins the BOOT sequence when the

MOT_DET pin is pulled high.

Standby

EXT_TRIG

BT_MODE = GND:

Enable the EXT_TRIG input function by setting

SENS_CONFIG4[INT2_FUNC] =

BT_MODE = VDD:

The EXT_TRIG function is not available when BT_MODE = VDD; this transition is

not possible

EXT_TRIG

Standby

BT_MODE = GND:

Disable the EXT_TRIG input function by setting

SENS_CONFIG4[INT2_FUNC] =

BT_MODE = VDD:

The EXT_TRIG function is not available when BT_MODE = VDD; this transition is

not possible

EXT_TRIG

WAKE

BT_MODE = GND:

To initiate an ADC conversion, signal a low to high state transition on the INT2/

EXT_TRIG pin.

BT_MODE = VDD:

The EXT_TRIG function is not available when BT_MODE = VDD; this transition is

not possible

WAKE

EXT_TRIG

BT_MODE = GND:

FXLS8967AF automatically returns to the EXT_TRIG state once the previously

triggered measurement has completed.

BT_MODE = VDD:

The EXT_TRIG function is not available when BT_MODE = VDD; this transition is

not possible

Table 16. Operating modes transition criteria

FXLS8967AF

All information provided in this document is subject to legal disclaimers.

Objective data sheet

Rev. 1 — 27 April 2021

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