Datasheet

Preliminary Data Sheet
BMA400
Page 14 /
Confidential
BST-BMA400-DS000-00 | Version 0.1 | November 2017 Bosch Sensortec
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Note: Specifications within this document are subject to change without notice.
-checking communication via chipid, check power mode, read acceleration data if not in sleep
mode
unknown
mode
STATUS.power_mode
chipid = read_reg(0x00)
chip_ID = 0x90 ? EndNO
power_mode = (read_reg(0x03)>>1) & 0x03
power_mode = 0x00 ?
YES
sleep mode, no accel
data available
power_mode = 0x01 ? YES low power mode
NO
acc_data = read_reg_burst(0x08,6)
X = acc_data(0) + 256*acc_data(1)
if ( X>2047 ) X=X-4096
6 byte Burst read
X,Y,Z data
registers
in normal or low power
mode, calculate X data
normal mode
Confidential and under NDA
Seeed Studio
Confidential and under NDA
Seeed Studio
Confidential and under NDA