Bosch SMD500 Datasheet download pdf (Page 40)

Application Note

BlueBox Demo-Board for the digital sensors

SMB365 (acceleration) and SMD500 (pressure)

Bosch Sensortec

AN18002

Rev. 1.0

Page 40

hts even in the event of industrial propert

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4.3.4 SMB365 Selftest

All operation modes of the SMB365 sensor (2g, 10g, normal power, low-power, global and

independent interrupt condition) offer full on-chip selftest capability. The selftest acts on all three

axes to check all signal evaluation paths of the MEMS simultaneously. This includes the silicon

sensing element as well as the ASIC itself. The selftest is realized by a physical deflection of the

seismic mass due to an electrostatic force. In operation, it is possible to perform the selftest at

any time over the complete life cycle. For more details please refer to the latest sensor related

datasheet.

Selftest deactivated

falling edge

Selftest activated

rising edge

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Bosch SMD500 Datasheet Page 40