Specifications

Data sheet
BMA220
Page 49
BST-BMA220-DS003-08 | Revision 1.15 | August 2011 Bosch Sensortec
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Note: Specifications within this document are subject to change without notice.
8. Pin-out and connecting diagram
8.1 Pin-out
Figure 27: Pin-out of the BMA220 (top view)
Table 24: Pin description
Pin# Name Type Description Connect to
(in SPI 4w)
Connect to
(in SPI 3w)
Connect to
(in I²C)
1 SDO Digital Out SPI serial data output SDO NC NC
2 SDx Digital I/O
SDA for I
2
C serial data in-/output
SDI for serial data input (SPI 4-wire mode)
SDA serial data in-/output (SPI 3-wire mode)
SDI SDA SDA
3 VDDIO Supply I I/O supply voltage
(variable between 1.62 ... 3.6V)
VDDIO VDDIO VDDIO
4 VDDD Supply I Power supply for digital domain VDDD VDDD VDDD
5 INT Digital I/O Interrupt output INT INT INT
6 CAP0 DNC Do not connect!
Pin reserved for factory trimming
NC NC NC
7 VDDA Supply I Power supply for analog domain VDDA VDDA VDDA
8 GND Ground Shared ground for digital, I/O and analog GND GND GND
9 GND Ground Shared ground for digital, I/O and analog GND GND GND
10 CSB Digital In Chip-select for SPI mode. Address-select for
I
2
C mode
,
see cha
p
ter 8.3. Pin must not float.
CSB CSB CSB
11 PS Digital In
Protocol select pin (0=SPI, 1=I
2
C, float = μC-
less); pin must not float unless dedicated
mode is used, see chapter 6.1.
GND GND VDDIO
12 SCK Digital In SCK for SPI serial clock
SCL for I
2
C serial clock
SCK SCK SCL
For further details on the recommended connection for the use of the BMA220 without
μController (i.e. in dedicated I/O modes) please refer to table 16 in chapter 6.