MOD-L3GD20

L3GD20 MEMS motion sensor: three-axis digital output gyroscope Features Three selectable full scales (250/500/2000 dps) 2 I C/SPI digital output interface 16 bit-rate value data output 8-bit temperature data output LGA-16 (4x4x1 mm) Two digital output lines (interrupt and data ready) Integrated low- and high-pass filters with user- Description selectable bandwidth The L3GD20 is a low-power three-axis angular Wide supply voltage: 2.4 V to 3.6 V rate sensor. Low voltage-compatible IOs (1.8 V) It includes a sensing element and an IC interface Embedded power-down and sleep mode capable of providing the measured angular rate to Embedded temperature sensor the external world through a digital interface 2 (I C/SPI). Embedded FIFO High shock survivability The sensing element is manufactured using a dedicated micro-machining process developed by Extended operating temperature range (-40 C STMicroelectronics to produce inertial sensors to +85 C) and actuators on silicon wafers. ECOPACK RoHS and Green compliant The IC interface is manufactured using a CMOS process that allows a high level of integration to Applications design a dedicated circuit which is trimmed to better match the sensing element characteristics. Gaming and virtual reality input devices Motion control with MMI (man-machine The L3GD20 has a full scale of 250/500/ 2000 interface) dps and is capable of measuring rates with a user-selectable bandwidth. GPS navigation systems The L3GD20 is available in a plastic land grid Appliances and robotics array (LGA) package and can operate within a temperature range of -40 C to +85 C. Table 1. Device summary Order code Temperature range (C) Package Packing L3GD20 -40 to +85 LGA-16 (4x4x1 mm) Tray L3GD20TR -40 to +85 LGA-16 (4x4x1 mm) Tape and reel August 2011 Doc ID 022116 Rev 1 1/44 www.st.com 44Contents L3GD20 Contents 1 Block diagram and pin description . 7 1.1 Pin description 7 2 Mechanical and electrical specifications 9 2.1 Mechanical characteristics . 9 2.2 Electrical characteristics 10 2.3 Temperature sensor characteristics . 10 2.4 Communication interface characteristics . 11 2.4.1 SPI - serial peripheral interface . 11 2.4.2 I2C - Inter IC control interface 12 2.5 Absolute maximum ratings 13 2.6 Terminology . 14 2.6.1 Sensitivity 14 2.6.2 Zero-rate level 14 2.7 Soldering information 14 3 Application hints . 15 4 Digital main blocks . 16 4.1 Block diagram 16 4.2 FIFO . 16 4.2.1 Bypass mode . 17 4.2.2 FIFO mode . 17 4.2.3 Stream mode . 18 4.2.4 Bypass-to-stream mode . 20 4.2.5 Stream-to-FIFO mode 20 4.2.6 Retrieve data from FIFO 21 5 Digital interfaces . 22 5.1 I2C serial interface 22 5.1.1 I2C operation . 23 5.2 SPI bus interface . 24 5.2.1 SPI read . 26 2/44 Doc ID 022116 Rev 1