BMP581 datasheet(46/75 Pages) BOSCH

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Bosch Sensortec | BST-BMP581-DS004-11

46 | 75

Document number: BST-BMP581-DS004-11

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

6 Pin out and connection diagrams

6.1Pin Out

Figure 22 shows the pin-out of the device from top and bottom view, respectively. Table 28 shows the related pin descriptions.

Figure 23: Pin out top and bottom view

Table 28: Pin description

Name

I/O Type

Description

Connect to

SPI 4W

SPI 3W

VDDIO

Supply

Digital interface supply

VDDIO

SCK

Serial clock input

SCK

VSS

Supply

Ground

GND

SDI

In/Out

Serial data input

SDI

SDI/SDO

SDO

In/Out

Serial data output

SDO

DNC

CSB

Chip select

CSB

INT

Out

INT output

host INT input, GNDa or

DNC

VSS

Supply

Ground

GND

VSS

Supply

Ground

GND

VDD

Supply

Analog supply

VDD

a. GND connection is allowed, as long as the IRQ pin is not activated

6.2Connection Diagrams

The sensor (including the ASIC) should be used in one of the following four configurations on application level. In all

connection scenarios:



all VSS pins must be connected to GND.

if the INT pin is not used, it is recommended to be connect it to GND, rather than leaving it floating. In the case of

GND connection, the interrupt pin must be disabled by keeping INT_CONFIG.int_en disabled. . If the INT pin must

be unconnected in the application, it is recommended to use the following settings for INT_CONFIG:



INT_CONFIG.int_en = 1



INT_CONFIG.int_od = 0



INT_CONFIG.pad_int_drv =

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