Data sheet
BMA150
Bosch Sensortec
Triaxial, digital acceleration sensor
Index of Contents
1. SPECIFICATION...................................................................................................................................... 5
2. MAXIMUM RATINGS ............................................................................................................................... 7
3. GLOBAL MEMORY MAP .........................................................................................................................8
3.1 OPERATIONAL REGISTERS ................................................................................................................... 11
3.1.1 SPI4............................................................................................................................................ 11
3.1.2 Range ......................................................................................................................................... 11
3.1.3 Bandwidth................................................................................................................................... 12
3.1.4 Wake_up .................................................................................................................................... 12
3.1.5 Wake_up_pause ........................................................................................................................ 13
3.1.6 Shadow_dis ................................................................................................................................ 13
3.2 INTERRUPT SETTINGS .......................................................................................................................... 14
3.2.1 Enable_LG: ................................................................................................................................ 14
3.2.2 Enable_HG:................................................................................................................................ 14
3.2.3 Enable_adv_INT: ....................................................................................................................... 14
3.2.4 Any_motion: ............................................................................................................................... 14
3.2.5 Alert:........................................................................................................................................... 14
3.2.6 Latch_INT:.................................................................................................................................. 15
3.2.7 LG_thres, LG_hyst, LG_dur, counter_LG .................................................................................. 15
3.2.8 HG_thres, HG_hyst, HG_dur, counter_HG ............................................................................... 16
3.2.9 Any_motion_thres, any_motion_dur .......................................................................................... 17
3.2.10 New_data_int ........................................................................................................................... 19
3.3 CONTROL REGISTERS .......................................................................................................................... 20
3.3.1 Reset_INT .................................................................................................................................. 20
3.3.2 Update_image ............................................................................................................................ 20
3.3.3 Ee_w .......................................................................................................................................... 20
3.3.4 Selftest_0 ................................................................................................................................... 21
3.3.5 Selftest_1 ................................................................................................................................... 21
3.3.6 Soft_reset................................................................................................................................... 21
3.3.7 Sleep .......................................................................................................................................... 21
3.4 STATUS REGISTERS ............................................................................................................................. 22
3.4.1 St_result ..................................................................................................................................... 22
3.4.2 Alert_phase ................................................................................................................................ 22
3.4.3 LG_latched, HG_latched............................................................................................................ 22
3.4.4 Status_LG, status_HG ............................................................................................................... 22
3.4.5 Customer_reserved 1, customer_reserved 2 ............................................................................ 22
3.5 DATA REGISTERS ................................................................................................................................ 23
3.5.1 Temp .......................................................................................................................................... 23
3.5.2 Acc_x, acc_y, acc_z................................................................................................................... 23
3.5.3 New_data_x, new_data_y, new_data_z .................................................................................... 24
3.5.4 Al_version, ml_version, chip_id ................................................................................................. 24
Rev. 1.5
Page 3
30 May 2008
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Note: Specifications within this document are subject to change without notice.