BMA253
Data sheet
Page 105
8. Pin-out and connection diagram
8.1 Pin-out
Top View
Pads not visible!
Bottom View
Pads visible!
Figure 22: Pin-out top view
Figure 23: Pin-out bottom view
Table 24: Pin description
Connect to
in SPI 4W In SPI 3W
Pin# Name
I/O Type
Description
in I²C
Serial data output in SPI
Address select in I²C mode
see chapter 7.2
GND for default
addr.
1
SDO
Digital out
SDO
DNC (float)
SDA serial data I/O in I²C
SDI serial data input in SPI
4W
SDA serial data I/O in SPI
3W
2
3
SDx
Digital I/O
Supply
SDI
SDA
VDDIO
SDA
Digital I/O supply voltage
VDDIO
VDDIO
VDDIO
(1.2V … 3.6V)
4
5
6
NC
--
GND
INT1
INT2
GND
INT1
INT2
GND
INT1
INT2
INT1
INT2
Digital out
Digital out
Interrupt output 1 *
Interrupt output 2 *
Power supply for analog &
digital domain (1.62V …
3.6V)
7
VDD
Supply
VDD
VDD
VDD
8
9
GNDIO
GND
Ground
Ground
Digital in
Ground for I/O
GND
GND
CSB
GND
GND
CSB
GND
GND
Ground for digital & analog
Chip select for SPI mode
10
CSB
DNC (float)
Protocol select (GND = SPI,
VDDIO = I²C)
11
12
PS
Digital in
Digital in
GND
SCK
GND
SCK
VDDIO
SCL
SCK for SPI serial clock
SCL for I²C serial clock
SCx
* If INT1 and/or INT2 are not used, please do not connect them (DNC).
BST-BMA253-DS000-01 | Revision 1.0 | August 2015
Bosch Sensortec
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Note: Specifications within this document are subject to change without notice.
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