Техническая Спецификация для Freescale Semiconductor Accelerometer Cube Demo MMA9559LKUBE MMA9559LKUBE
Модели
MMA9559LKUBE
MMA955xL
Sensors
Freescale Semiconductor, Inc.
Freescale Semiconductor, Inc.
13
3.4.4
MMA955xL Platform as a Sensor Hub
The MMA955xL device includes:
•
•
a powerful 32-bit ColdFire V1 CPU
•
a second I
2
C bus
•
one external analog input
These features can all be monitored using the on-chip ADC.
The combination of low power consumption and powerful features means that the MMA955xL platform can effectively operate
as a power controller for handheld units such as industrial scanners, PDAs, and games. The host platform can put itself to sleep
with confidence that the MMA955xL device will issue a wake request should any external event require its attention.
as a power controller for handheld units such as industrial scanners, PDAs, and games. The host platform can put itself to sleep
with confidence that the MMA955xL device will issue a wake request should any external event require its attention.
The following figure illustrates the MMA955xL device being used in this configuration. Observe how all that is required is a few
bypass capacitors, a ferrite bead, and some pullup resistors for the I
bypass capacitors, a ferrite bead, and some pullup resistors for the I
2
C buses.
Figure 6. Platform as sensor hub
9
/
ȝ+%($'
4XLHW9''$IRU
EHVWSHUIRUPDQFH
EHVWSHUIRUPDQFH
&
ȝ)
ȝ)
&
ȝ)
,17B287
,
&B'$7$
,
&B&/.
.ȍ
5
9
&
ȝ)
ȝ)
&
ȝ)
9
8
00$ ;
00$ ;
9''
%.*'06,2
5(6(7%
6&/,26&/.
966
,2$1
,2$1
,23'%B$,17B2
966
,2,17
6'$,26',
,26&/6'2
,26'$6%%
966$
,23'%B%
9''$
.ȍ
5
9
.ȍ
5
9
.ȍ
5
'LIIHUHQWLDO
$QDORJ
6HQVRU
6HQVRU
,17B,1
,
&B'$7$
,
&B&/.
.ȍ
5
9
.ȍ
5
,
&
'LJLWDO
6HQVRUV
5(6(7%