FXAS21002CQR1 データシートの表示（PDF） - Freescale Semiconductor

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FXAS21002CQR1

3-Axis Digital Angular Rate Gyroscope

Freescale Semiconductor 

Functionality

POR (VDD > 1.95 V)

Boot

Boot_end = 1

Standby

Start-up sequence

Functional modes

PWR_CTRL = Low

and

CTRL_REG1[READY] = 0

PWR_CTRL = HIGH

PWR_CTRL = Low

and

CTRL_REG1[READY] = 0

Active

PWR_CTRL = Low

and

CTRL_REG1[READY] = 1

PWR_CTRL = HIGH

PWR_CTRL = Low

and

CTRL_REG1[READY] = 1

Ready

Figure 19. Functional mode transition diagram with CTRL_REG3[EXTCTRLEN] = 1

5 Functionality

The FXAS21002C is a low-power, digital-output, 3-axis gyroscope with both I2C and

SPI interfaces. The functionality includes the following:

• 16-bit output data presented in 2's complement format

• Configurable full scale ranges of ±250, ±500, ±1000 and ±2000 dps; optional FSRs

of ±500, ±1000, ±2000 and ±4000 by setting CTRL_REG3[FS_DOUBLE] = 1

• Configurable output data rates from 12.5 to 800 Hz

• Internal low-pass filter with programmable cut-off frequency to limit the output

data bandwidth

• Angular rate sensitivity of 0.0625°/s in ±2000°/s FSR mode

• Internal high-pass filter with programmable cut-off frequency

• Embedded rate threshold detection function with programmable debounce time

• 32-sample FIFO configurable in Circular or Stop data collection modes

• 2 external interrupt pins that are configurable to signal data-ready, Rate Threshold

or FIFO events

• Self-test function for indication of device health

26

Freescale Semiconductor, Inc.

3-Axis Digital Angular Rate Gyroscope, Rev. 2.1, 5/2015

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