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FXLS8971CF датащи(PDF) 54 Page - NXP Semiconductors |
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FXLS8971CF датащи(HTML) 54 Page - NXP Semiconductors |
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54 / 100 page ![]() NXP Semiconductors FXLS8971CF 3-Axis Low-g Accelerometer Bit 7 6 5 4 3 2 1 0 Name WAKE_IDLE[7:0] Reset 0 0 0 0 0 0 0 0 Access R/W R/W R/W R/W R/W R/W R/W R/W Table 61. WAKE_IDLE_LSB register (address 1Ah) bit allocation 15.3.7 WAKE_IDLE_MSB register (address 1Bh) Flexible Power Mode WAKE idle time MSB. The contents of this register are only meaningful when SENS_CONFIG2[WAKE_PM[1:0]] = 1xb. Bit 7 6 5 4 3 2 1 0 Name 0 0 0 0 WAKE_IDLE[11:8] Reset 0 0 0 0 0 0 0 0 Access R/W R/W R/W R/W R/W R/W R/W R/W Table 62. WAKE_IDLE_MSB register (address 1Bh) bit allocation 15.3.8 SLEEP_IDLE_LSB register (address 1Ch) Flexible Power Mode SLEEP idle time LSB. The contents of this register are only meaningful when SENS_CONFIG2[SLEEP_PM[1:0]] = 1xb. This register, along with SLEEP_IDLE_MSB, sets the unsigned 12-bit SLEEP mode idle-time (off-time). The counter time period is 312.5 µs/LSB, providing a range of 312.5 µs to 1.28 seconds. The idle time + measurement time (set by the SLEEP mode decimation factor) forms the measurement period (ODR–1). Bit 7 6 5 4 3 2 1 0 Name SLEEP_IDLE[7:0] Reset 0 0 0 0 0 0 0 0 Access R/W R/W R/W R/W R/W R/W R/W R/W Table 63. SLEEP_IDLE_LSB register (address 1Ch) bit allocation 15.3.9 SLEEP_IDLE_MSB register (address 1Dh) Flexible Power Mode SLEEP idle time MSB (nibble). The contents of this register are useful only when SENS_CONFIG2[SLEEP_PM[1:0]] = 1xb. Bit 7 6 5 4 3 2 1 0 Name 0 0 0 0 SLEEP_IDLE_TIME[11:8] Reset 0 0 0 0 0 0 0 0 Access R/W R/W R/W R/W R/W R/W R/W R/W Table 64. SLEEP_IDLE_MSB register (address 1Dh) bit allocation 15.3.10 ASLP_COUNT_LSB, ASLP_COUNT_MSB registers (addresses 1Eh to 1Fh) The ASLP_COUNT value sets the minimum number of ODR periods needed to transition from WAKE to SLEEP mode when no event activity is detected. See Section 15.3.4 for events that may be monitored for inactivity in order to trigger the transition to SLEEP mode when the internal counter reaches the ASLP_COUNT value. FXLS8971CF All information provided in this document is subject to legal disclaimers. © 2024 NXP B.V. All rights reserved. Product data sheet Rev. 2.1 — 7 March 2024 54 / 100 |
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