ADXL36±
Data Sheet
TABLE OF CONTENTS
Device ID Register ..................................................................... 24
Device ID: 0x1D Register.......................................................... 24
Part ID: 0xF2 Register................................................................ 24
Silicon Revision ID Register ..................................................... 24
X-Axis Data (8 MSB) Register.................................................. 24
Y-Axis Data (8 MSB) Register .................................................. 24
Z-Axis Data (8 MSB) Register.................................................. 24
Status Register............................................................................. 25
FIFO Entries Registers............................................................... 26
X-Axis Data Registers................................................................ 26
Y-Axis Data Registers ................................................................ 26
Z-Axis Data Registers ................................................................ 26
Temperature Data Registers...................................................... 26
Soft Reset Register...................................................................... 26
Activity Threshold Registers..................................................... 27
Activity Time Register ............................................................... 27
Inactivity Threshold Registers.................................................. 27
Inactivity Time Registers........................................................... 27
Activity/Inactivity Control Register ........................................ 29
FIFO Control Register ............................................................... 30
FIFO Samples Register .............................................................. 31
INT1/INT2 Function Map Registers....................................... 31
Filter Control Register ............................................................... 33
Power Control Register ............................................................. 34
Self Test Register......................................................................... 35
Applications Information.............................................................. 36
Application Examples ................................................................ 36
Power............................................................................................ 37
FIFO Modes ................................................................................ 38
Interrupts..................................................................................... 39
Using Synchronized Data Sampling ........................................ 40
Using an External Clock............................................................ 41
Using Self Test............................................................................. 41
Operation at Voltages Other Than 2.0 V ................................ 41
Mechanical Considerations for Mounting.............................. 41
Axes of Acceleration Sensitivity ............................................... 42
Layout and Design Recommendations ................................... 42
Outline Dimensions....................................................................... 43
Ordering Guide .......................................................................... 43
Features .............................................................................................. 1
Applications....................................................................................... 1
General Description......................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 3
Specifications..................................................................................... 4
Absolute Maximum Ratings............................................................ 6
Thermal Resistance ...................................................................... 6
Package Information.................................................................... 6
Recommended Soldering Profile ............................................... 6
ESD Caution.................................................................................. 6
Pin Configuration and Function Descriptions............................. 7
Typical Performance Characteristics ............................................. 8
Theory of Operation ...................................................................... 13
Mechanical Device Operation .................................................. 13
Operating Modes........................................................................ 13
Selectable Measurement Ranges............................................... 13
Selectable Output Data Rates.................................................... 13
Power/Noise Tradeoff ................................................................ 14
Power Savings Features.................................................................. 15
Ultralow Power Consumption in All Modes.......................... 15
Motion Detection ....................................................................... 15
FIFO ............................................................................................. 17
Communications ........................................................................ 17
Additional Features ........................................................................ 18
Free Fall Detection ..................................................................... 18
External Clock ............................................................................ 18
Synchronized Data Sampling.................................................... 18
Self Test ........................................................................................ 18
User Register Protection............................................................ 18
Temperature Sensor ................................................................... 18
Serial Communications ................................................................. 19
SPI Commands ........................................................................... 19
Multibyte Transfers .................................................................... 19
Invalid Addresses and Address Folding .................................. 19
Latency Restrictions................................................................... 19
Invalid Commands..................................................................... 19
Register Map.................................................................................... 23
Register Details ............................................................................... 24
Rev. B | Page 2 of 44
ADI [ ADI ]
