Information

BMA280
Data sheet
Page 105
BST-BMA280-DS000-11 | Revision 1.8 | August 2014 Bosch Sensortec
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Note: Specifications within this document are subject to change without notice.
8. Pin-out and connection diagram
8.1 Pin-out
Figure 22: Pin-out top view Figure 23: Pin-out bottom view
Table 24: Pin description
Pin#
Name
I/O Type
Description
Connect to
in SPI 4W
In SPI 3W
in I²C
1
SDO
Digital out
Serial data output in SPI
Address select in I²C mode
see chapter 7.2
SDO
DNC (float)
GND for default
addr.
2
SDx
Digital I/O
SDA serial data I/O in I²C
SDI serial data input in SPI
4W
SDA serial data I/O in SPI
3W
SDI
SDA
SDA
3
VDDIO
Supply
Digital I/O supply voltage
(1.2V … 3.6V)
V
DDIO
V
DDIO
V
DDIO
4
NC
--
GND
GND
GND
5
INT1
Digital out
Interrupt output 1 *
INT1
INT1
INT1
6
INT2
Digital out
Interrupt output 2 *
INT2
INT2
INT2
7
VDD
Supply
Power supply for analog &
digital domain (1.62V …
3.6V)
V
DD
V
DD
V
DD
8
GNDIO
Ground
Ground for I/O
GND
GND
GND
9
GND
Ground
Ground for digital & analog
GND
GND
GND
10
CSB
Digital in
Chip select for SPI mode
CSB
CSB
DNC (float)
11
PS
Digital in
Protocol select (GND = SPI,
V
DDIO
= I²C)
GND
GND
V
DDIO
12
SCx
Digital in
SCK for SPI serial clock
SCL for I²C serial clock
SCK
SCK
SCL
* If INT1 and/or INT2 are not used, please do not connect them (DNC).
Bottom View
Pads visible!
Top View
Pads not visible!