低功耗三轴示波器L3G4200D数据手册资源-CSDN下载

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February 2010 Doc ID 17116 Rev 1 1/24

L3G4200D

MEMS motion sensor:

three-axis digital output gyroscope

Features

■ Three selectable full scales

(±250/500/2000 dps)

■ I

C/SPI digital output interface

■ 16 bit rate value data output

■ Two digital output lines (interrupt and

dataready)

■ Integrated low and high pass filters with user

selectable bandwidth

■ Embedded self-test

■ Wide supply voltage, 2.4 V to 3.6 V

■ Low voltage compatible IOs, 1.8 V

■ Embedded power-down and sleep mode

■ High shock survivability

■ Extended operating temperature range

(-40 °C to +85 °C)

■ ECOPACK

RoHS and “Green” compliant

(see Section 6)

Applications

■ Gaming and virtual reality input devices

■ Motion control with MMI (man-machine

interface)

■ GPS navigation systems

■ Appliances and robotics

Description

The L3G4200D is a low-power three-axis

gyroscope providing three different user

selectable full scales (±250/±500/±2000 dps).

It includes a sensing element and an IC interface

able to provide the detected angular rate to the

external world through a digital interface

C/SPI).

The sensing element is manufactured using

specialized micromachining processes, while the

IC interface is realized using a CMOS technology

that allows designing a dedicated circuit which is

trimmed to better match the sensing element

characteristics.

The L3G4200D is available in a plastic land grid

array (LGA) package and provides excellent

temperature stability and high resolution over an

extend operating temperature range (-40 °C to

+85 °C).

LGA-16

(4x4x1 mm)

Table 1. Device summary

Order code Temperature range (°C) Package Packing

L3G4200D

-40 to + 85 LGA-16 (4x4x1)

Tray

L3G4200DTR Tape and reel

www.st.com

Contents L3G4200D

2/24 Doc ID 17116 Rev 1

Contents

1 Block diagram and pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.1 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2 Mechanical and electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . 8

2.1 Mechanical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.2 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.3 Communication interface characteristics . . . . . . . . . . . . . . . . . . . . . . . . . 10

2.3.1 SPI - serial peripheral interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2.3.2 I2C - Inter IC control interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

3 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.1 Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3.1.1 Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3.1.2 Zero-rate level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3.1.3 Self-test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3.2 Soldering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

4 Digital main blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

4.1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

5 Digital interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

5.1 I2C serial interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

5.1.1 I2C operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

5.2 SPI bus interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

5.2.1 SPI read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

5.2.2 SPI write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

5.2.3 SPI read in 3-wires mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

6 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

7 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

L3G4200D List of tables

Doc ID 17116 Rev 1 3/24

List of tables

Table 1. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Table 2. Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Table 3. Filter values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Table 4. Mechanical characteristics @ Vdd = 3.0 V, T = 25 °C unless otherwise noted . . . . . . . . . . 8

Table 5. Electrical characteristics @ Vdd =3.0 V, T=25 °C unless otherwise noted. . . . . . . . . . . . . . 9

Table 6. SPI slave timing values. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Table 7. I2C slave timing values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Table 8. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Table 9. Serial interface pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Table 10. I2C terminology. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Table 11. SAD+Read/Write patterns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Table 12. Transfer when Master is writing one byte to slave . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Table 13. Transfer when Master is writing multiple bytes to slave . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Table 14. Transfer when Master is receiving (reading) one byte of data from slave . . . . . . . . . . . . . 17

Table 15. Transfer when Master is receiving (reading) multiple bytes of data from slave . . . . . . . . . 17

Table 16. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

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