FXLS8967AF datasheet(55/98 Pages) NXP

55 / 98 page

NXP Semiconductors

FXLS8967AF

3-Axis Low-g Accelerometer

SENS_CONFIG2[SLEEP_PM] sets the SLEEP power mode;

SENS_CONFIG3[SLEEP_ODR] sets the ODR. When operating in Flexible Performance

Mode,

SENS_CONFIG3[SLEEP_DEC] and SLEEP_IDLE[11:0] values set the effective

ODR.

The functions used to detect inactivity and enter SLEEP mode upon expiry of

the

ASLP_COUNT timer (see Table 69) are selected in SENS_CONFIG4 and

BUF_CONFIG2. The same functions used to enter SLEEP are also used to exit this

mode when activity is detected except for the SRC_BUF event flag, which can only be

used to prevent/delay a transition from WAKE to SLEEP if the host system is reading

data from the buffer (and clearing SRC_BUF). A transition from SLEEP to WAKE mode

occurs as soon as one of the enabled detection events becomes active. See Table 70 for

the corresponding Interrupt event sources.

Bit

Name

ASLP_COUNT[7:0]

Reset

Access

R/W

Table 65. ASLP_COUNT_LSB register (address 1Eh) bit allocation

Field

Description

7 to 0

ASLP_COUNT [7:0]

LSB of the 12-bit unsigned count value used for inactivity detection. The selected WAKE mode

ODR determines the counter period.

Table 66. ASLP_COUNT_LSB register (address 1Eh) bit description

Bit

Name

—

ASLP_COUNT[11:8]

Reset

Access

R/W

Table 67. ASLP_COUNT_MSB register (address 1Fh) bit allocation

Field

Description

3 to 0

ASLP_COUNT [11:8]

MSB (nibble) of the 12-bit unsigned count value used for inactivity detection. The selected WAKE

mode ODR determines the counter period.

Table 68. ASLP_COUNT_MSB register (address 1Fh) bit description

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

Table 69. ASLP_COUNT timer period

FXLS8967AF

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

Objective data sheet

Rev. 1 — 27 April 2021

55 / 98

FXLS8967AF Datasheet(PDF) 55 Page - NXP Semiconductors

FXLS8967AF Datasheet(HTML) 55 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

Datasheet Download

Link URL