FXLS8971CF datasheet(56/100 Pages) NXP

56 / 100 page

NXP Semiconductors

FXLS8971CF

3-Axis Low-g Accelerometer

WAKE mode ODR (Hz)

WAKE mode

ODR Period (ms)

ASLP_COUNT Period (ms)

Max Inactivity Times

3200

0.3125

1.28

1600

0.625

2.56

800

1.25

5.12

400

2.5

10.24

200

20.48

100

40.96

81.92

163.84

12.5

327.68

6.25

160

655.36

3.125

320

1310.72

1.563

640

2621.44

0.781

1280

5242.54

Table 69. ASLP_COUNT timer period

Interrupt Event

Source

Event flag can clear auto-sleep timer?

Event flag can transition the device from

SLEEP to WAKE mode?

SRC_DRDY

SRC_OVF

SRC_BUF

Yes[1]

SRC_SDCD_OT

Yes

SRC_SDCD_WT

Yes

SRC_ORIENT

Yes

SRC_ASLP

No[2]

SRC_BOOT

Table 70. Auto-WAKE/SLEEP Interrupt Event Sources

[1]

When BUF_CONFIG2[WAKE_SRC_BUF] = 1, clearing the SRC_BUF event flag resets the auto-sleep timer and prevent FXLS8971CF from entering

SLEEP mode. When BUF_CONFIG2[WAKE_SRC_BUF] = 0 (default), FXLS8971CF enters SLEEP mode regardless of the state of the BUF_WMRK or

BUF_OVF event flags.

[2]

If the BUF_GATE bit is set to logic '1', it prevents the output buffer from accepting new data after a WAKE-to-SLEEP or SLEEP-to-WAKE operating mode

transition until the host first empties the buffer contents. The BUF_GATE bit is useful for preventing acceleration data from different WAKE and SLEEP

mode ODRs from being mixed within the buffer.

15.3.11 INT_EN register (address 20h)

This register is used to enable and disable the various interrupt event generators embedded within the device.

Note:

• When BT_MODE = VDD, the INT1/MOT_DET pin signals any mapped (and enabled) interrupts with a TPULSE-

MOT ms active low pulse (open-drain output with external pull-up).

• Any enabled interrupt is signaled with a TPULSE-MOT ms pulse at the ODR rate until the respective interrupt

source flag is cleared.

FXLS8971CF

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

Product data sheet

Rev. 2.1 — 7 March 2024

56 / 100

FXLS8971CF Datasheet(PDF) 56 Page - NXP Semiconductors

FXLS8971CF Datasheet(HTML) 56 Page - NXP Semiconductors

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100

Datasheet Download

Link URL