3-AXIS ACCELEROMETER DIGITAL I/F

BMA250

Manufacturer Part NumberBMA250
Description3-AXIS ACCELEROMETER DIGITAL I/F
ManufacturerBosch Sensortec
Series-
BMA250 datasheets
 


Specifications of BMA250

Featured ProductBMA250 - Digital, Triaxial Acceleration SensorAxisX, Y, Z
Acceleration Range±2g, 4g, 8g, 16gSensitivity256LSB/g, 128LSB/g, 64LSB/g, 16LSB/g
Voltage - Supply1.62 V ~ 3.6 VOutput TypeI²C™, SPI™
Bandwidth8Hz ~ 1kHzInterfaceI²C, SPI
Mounting TypeSurface MountPackage / Case12-VQFN
Lead Free Status / Rohs StatusLead free / RoHS CompliantFor Use With828-1024 - BMA250 DAUGHTERCARD FOR DEV KIT
Other names828-1023-2  
BMA250_SHUTL PDF datasheetBMA250_SHUTL PDF datasheet #2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
Page 51
52
Page 52
53
Page 53
54
Page 54
55
Page 55
56
Page 56
57
Page 57
58
Page 58
59
Page 59
60
Page 60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
Page 55/74

Download datasheet (2Mb)Embed
PrevNext
6.1 Serial peripheral interface (SPI)
The timing specification for SPI of the BMA250 is given in the following table:
Table 73: SPI timing
Parameter
Symbol
Clock Frequency
f
SPI
SCK Low Pulse
t
SCKL
SCK High Pulse
t
SCKH
SDI Setup Time
t
SDI_setup
SDI Hold Time
t
SDI_hold
SDO Output Delay
t
SDO_OD
CSB Setup Time
t
CSB_setup
CSB Hold Time
t
CSB_hold
The following figure shows the definition of the SPI timings given in table 73:
The SPI interface of the BMA250 is compatible with two modes, ´00´ and ´11´. The automatic
selection between [CPOL = ´0´ and CPHA = ´0´] and [CPOL = ´1´ and CPHA = ´1´] is done
based on the value of SCK after a falling edge of CSB.
Two configurations of the SPI interface are supported by the BMA250: 4-wire and 3-wire. The
same protocol is used by both configurations. The device operates in 4-wire configuration by
default. It can be switched to 3-wire configuration by writing ´1´ to (0x34) spi3. Pin SDI is used
as the common data pin in 3-wire configuration.
Rev. 1.0
© Bosch Sensortec GmbH reserves all rights even in the event of industrial property rights. We reserve all rights of disposal such
as copying and passing on to third parties. BOSCH and the symbol are registered trademarks of Robert Bosch GmbH, Germany.
Note: Specifications within this document are subject to change without notice.
BMA250
Data sheet
Condition
Min
Max. Load on SDI or
SDO = 25pF
20
20
20
20
Load = 25pF
Load = 250pF,
V
= 2.4V
DDIO
20
40
Figure 10: SPI timing diagram
Page 55 / not for publishing
Bosch Sensortec
Max
Units
10
MHz
ns
ns
ns
ns
30
ns
40
ns
ns
ns
03 March 2011

Related parts for BMA250

Part Number DescriptionManufacturer Datasheet
BMA250 SHUTL  BMA250 SHUTL BMA250 DAUGHTERCARD FOR DEV KIT Bosch Sensortec
  BMA255 Specifications: Lead Free Status: Lead Free ; RoHS Status: RoHS Compliant Bosch Sensortec
  BMA222-SHUTL BMA222 DAUGHTERCARD FOR DEV KIT Bosch Sensortec
BMA220-SHUTL  BMA220-SHUTL DAUGHTERCARD FOR DEV KIT BMA220 Bosch Sensortec
BMA220  BMA220 ACCELEROMETER 3-AXIS SPI/I2C SMD Bosch Sensortec
  BMA222 3-AXIS ACCELEROMETER DIGITAL SMD Bosch Sensortec
BMA120  BMA120 ACCELEROMETER 3-AXIS SPI/I2C SMD Bosch Sensortec
BMA140  BMA140 3-AXIS ACCELEROMETER ANALOG I/F Bosch Sensortec
BMA150  BMA150 3-AXIS ACCELEROMETER DIGITAL I/F Bosch Sensortec
BMA180  BMA180 ACCELEROMETER 3 AXIS SPI/I2C 3X3 Bosch Sensortec
BMA020  BMA020 3-AXIS ACCELEROMETER DIGITAL I/F Bosch Sensortec
BMA145  BMA145 3-AXIS ACCELEROMETER ANALOG I/F Bosch Sensortec
0330.DB0.022  0330.DB0.022 DEVELOPMENT BOARD FOR SENSOR ICS Bosch Sensortec
BMA150-SHUTL  BMA150-SHUTL BMA150 DAUGHTERCARD FOR DEV KIT Bosch Sensortec
BMA140-SHUTL  BMA140-SHUTL BMA140 DAUGHTERCARD FOR DEV KIT Bosch Sensortec