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PDF FXAS21002C Data sheet ( Hoja de datos )
| Número de pieza | FXAS21002C | |
| Descripción | 3-Axis Digital Angular Rate Gyroscope | |
| Fabricantes | Freescale Semiconductor | |
| Logotipo |  |
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Freescale Semiconductor, Inc.
Data Sheet: Technical Data
FXAS21002C
Rev. 2.1, 5/2015
3-Axis Digital Angular Rate
Gyroscope
FXAS21002C
FXAS21002C is a small, low-power, yaw, pitch, and roll angular
rate gyroscope with 16 bit ADC resolution. The full-scale range is
adjustable from ±250°/s to ±2000°/s. It features both I2C and SPI
interfaces.
FXAS21002C is capable of measuring angular rates up to
±2000°/s, with output data rates (ODR) from 12.5 to 800 Hz. An
integrated Low-Pass Filter (LPF) allows the host application to
limit the digital signal bandwidth. The device may be configured
to generate an interrupt when a user-programmable angular rate
threshold is crossed on any one of the enabled axes.
FXAS21002C is available in a plastic, 24-lead QFN package; the
device is guaranteed to operate over the extended temperature
range of –40 °C to +85 °C.
24 QFN
4 mm x 4 mm x 1 mm
Case 2209-01
Top View
Features
• Supply voltage (VDD) from 1.95 V to 3.6 V
• Interface Supply voltage (VDDIO) from 1.62 V to VDD + 0.3 V
• 16-bit digital output resolution
• ±250/500/1000/2000°/s configurable full-scale dynamic
ranges
24 23 22 21 20
GND1 1
19 GND4
INT2 /
PWR_CTRL
2
18 VDDIO
INT1 3
17 SPI_CS_B
RST_B 4
16 VREGD
GND2 5
15 VDD
• Full-Scale Range boost function enables FSR's up to
RSVD_GND 6
14 GND3
±4000 dps
• Angular rate sensitivity of 0.0625°/s in ±2000°/s FSR mode
RSVD_GND 7
8
13 SA0 /
9 10 11 12
MISO
• Noise spectral density of 25 mdps/√Hz at 64 Hz bandwidth
(200 Hz ODR)
• Current consumption in Active mode is 2.7 mA
• Fast transition from Standby to Active mode (60 ms)
• Supported digital interfaces include:
Pin Connections
• I2C Standard and Fast Mode (100/400 kHz)
• SPI Interface (3- and 4-wire modes, up to 2 MHz)
• FIFO buffer is 192 bytes (32 X/Y/Z samples) with stop and circular operating modes
• Output Data Rates (ODR) from 12.5 to 800 Hz; programmable low-pass filter to further limit digital output
data bandwidth
• Low power standby mode
• Power mode transition control via external pin for accelerometer-based power management (motion
interrupt)
• Rate Threshold interrupt function
• Integrated self-test function
• 8-bit temperature sensor
© 2014-2015 Freescale Semiconductor, Inc. All rights reserved.
1 page  
General Description
Table 1. Pin functions
Pin Name
Function
1
GND1
Ground
2 INT2 / PWR_CTRL1 Interrupt Output 2 / Power state transition control input
3
INT1
Interrupt Output 1
4
RST_B
Reset input, active low. Connect this pin to VDDIO if unused.
5
GND2
Ground
6
RSVD_GND
Reserved - Must be tied to ground
7
RSVD_GND
Reserved - Must be tied to ground
8
I2C_B / SPI
Digital interface selection pin. This pin must be tied high to select SPI interface
mode, or low to select I2C interface mode.
9
RSVD_GND
Reserved pin—must be tied to ground
10
RSVD_GND
Reserved pin—must be tied to ground
11
SCL/SCLK
I2C / SPI clock
12 SDA / MOSI / SPI_Data I2C data / SPI 4-wire Master Out Slave In / SPI 3-wire data In/Out2
13
SA0/MISO
I2C address bit0 / SPI 4-wire Master In Slave Out
14
GND3
Ground
15 VDD Supply voltage
16
VREGD
Digital regulator output. Connect a 0.1 μF capacitor between this pin and ground
17
SPI_CS_B
SPI chip select input, active low. This pin must be held logic high when operating
in I2C interface mode (I2C_B/SPI set to ground) to ensure correct operation.
18
VDDIO
Interface supply voltage
19
GND4
Ground
20
RSVD_GND
Reserved - Must be tied to ground
21
RSVD_GND
Reserved - Must be tied to ground
22
RSVD_GND
Reserved - Must be tied to ground
23
RSVD_GND
Reserved - Must be tied to ground
24
RSVD_GND
Reserved - Must be tied to ground
1. INT2/PWR_CTRL becomes a high-impedance input with weak internal pull-up resistor when
CTRLREG3[EXTCTRLEN] = 1; the pull-up resistor is referenced to VDDIO.
2. MOSI becomes a bidirectional data pin when FXAS21002C is operated in 3-wire SPI mode with
CTRL_REG0[SPIW]=1.
1.3 System Connections
The FXAS21002C offers the choice of interfacing with a host processor through
either I2C or SPI interfaces. Figure 3 and Figure 4 show the recommended circuit
connections for implementing both interface options.
3-Axis Digital Angular Rate Gyroscope, Rev. 2.1, 5/2015
5
Freescale Semiconductor, Inc.
5 Page 
Mechanical and Electrical Specifications
Table 6. Electrical characteristics (continued)
Parameter
Symbol
Digital low level input voltage
SCL/SCLK, SDA/MOSI/
SPI_DATA, SA0/MISO, SPI/
I2C_B, RST_B, INT2/
PWR_CTRL, SPI_CS_B
VIL
High-level output voltage
INT1, INT2/PWR_CTRL,
SDA/MOSI/SPI_DATA, SA0/
MISO
VOH
Low-level output voltage INT1,
INT2/PWR_CTRL, SDA/
MOSI/SPI_DATA, SA0/MISO
VOL
Low-level output voltage SDA
Output Data Rate frequency
tolerance
VOLSDA1
VOLSDA2
ODRTOL
Output Signal bandwidth
BW
Standby to Active mode
transition time
TStdy-Act
Ready to Active mode
transition time
TRdy-Act
Test conditions (unless otherwise noted):
• VDD = 2.5 V
• VDDIO = 1.8 V
• T = 25°C
Test conditions
Min
——
Typ Max
— 0.3 * VDDIO
IO = 1 mA
0.9 * VDDIO
—
—
IO = 1 mA
— — 0.1 * VDDIO
IO = 3 mA, VDDIO ≥ 2V
IO = 3 mA, VDDIO < 2V
—
—
—
—
—
—
±2.5
0.4 * VDDIO
0.2 * VDDIO
—
—
4
< ODR/2
256
— — 1/ODR + 60 —
— — 1/ODR + 5 —
Unit
V
V
V
V
% ODR
Hz
ms
ms
2.5 Temperature Sensor Characteristics
Table 7. Temperature sensor characteristics
Characteristic
Symbol
Full-scale range
TFSR
Operating temperature
TOP
Sensitivity
TSENS
Test conditions (unless otherwise noted):
• VDD = 2.5 V
• VDDIO = 1.8 V
Condition(s)
—
—
—
Min Typ
–40 —
–40 +25
—1
Max Unit
+85 °C
+85 °C
— °C/LSB
3-Axis Digital Angular Rate Gyroscope, Rev. 2.1, 5/2015
11
Freescale Semiconductor, Inc.
11 Page | ||
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| PDF Descargar | [ Datasheet FXAS21002C.PDF ] | |
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