BMP581 datasheet(14/75 Pages) BOSCH

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Bosch Sensortec | BST-BMP581-DS004-11

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Document number: BST-BMP581-DS004-11

as well as in the event of applications for industrial property rights

3 Quick start guide

This section describes quickly the steps to get the sensor running with an example configuration.

3.1Sensor API and COINES

An Application Programming Interface (API) called Sensor API is available for BMP581. It is available as C source code.

The API provides higher-level functions, for example to switch power modes, or read and write the NVM. It is an

abstraction layer, so that the user does not have to issue individual read and write transactions to sensor registers. The

API still allows direct low-level register access to the sensor. The Sensor API also provides some basic examples of its

usage.

The Sensor API is fully compatible with the COINES library, which provides the low-level functions for the sensor API. It

is included in the COINES software package. More information, can be found on https://www.bosch-sensortec.com/.

4 Functional Description and Features

The BMP581 is a barometric pressure sensor that outputs to the host the absolute pressure in Pa. In addition, the

absolute temperature in °C can be provided to the host.

4.1Block diagram

BMP581‘s key components are a pressure sensitive MEMS sensor element and an integrated circuit that drives and

reads out the sensor element. Also it provides data and other functions to the host. The block diagram is shown in Figure

Figure 1: BMP581 block diagram

4.2 Power management

The BMP581 has two separate power supply pins:



VDD is the main power supply for all internal analog and digital regulator blocks



VDDIO is a separate power supply pin, used for the supply of the digital interface

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