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FXLS8967AF 数据表(PDF) 24 Page - NXP Semiconductors |
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FXLS8967AF 数据表(HTML) 24 Page - NXP Semiconductors |
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24 / 98 page  NXP Semiconductors FXLS8967AF 3-Axis Low-g Accelerometer Callout Current mode Next mode Transition criteria 1 OFF BOOT Apply VDD ≥ VDDmin 2 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). 3 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] 4 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] = 1. BT_MODE = VDD: The EXT_TRIG function is not available when BT_MODE = VDD; this transition is not possible 5 EXT_TRIG Standby BT_MODE = GND: Disable the EXT_TRIG input function by setting SENS_CONFIG4[INT2_FUNC] = 0. 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 6 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. © NXP B.V. 2021. All rights reserved. Objective data sheet Rev. 1 — 27 April 2021 24 / 98 |
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