Bosch BMP581 - Table 28: Pin Description

Bosch Sensortec"| BST-BMP581-DS004-02 46 | 74
Modifications reserved | Data subject to change
without notice Document number: BST-BMP581-DS004-02
6 Pin out and connection diagrams
6.1 Pin Out
Figure 23 shows the pin-out of the device from top and bottom view, respectively. Table 25 shows the related pin
descriptions.
Figure 18: Pin out top and bottom view
Table 28: Pin description
Pin
Name
I/O Type
Description
Connect to
SPI 4W
SPI 3W
1
VDDIO
Supply
Digital interface supply
V
DDIO
2
SCK
In
Serial clock input
SCK
SCK
3
VSS
Supply
Ground
GND
4
SDI
In/Out
Serial data input
SDI
SDI/SDO
5
SDO
In/Out
Serial data output
SDO
DNC
6
CSB
In
Chip select
CSB
CSB
7
INT
Out
INT output
host INT input, GND
a
or
DNC
8
VSS
Supply
Ground
GND
9
VSS
Supply
Ground
GND
10
VDD
Supply
Analog supply
V
DD
a. GND connection is allowed, as long as the IRQ pin is not activated
6.2 Connection 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 =