Freescale Semiconductor FRDM-FXS-MULTI 데이터 시트
MMA8652FC
Sensors
Freescale Semiconductor, Inc.
Freescale Semiconductor, Inc.
11
4
Modes of Operation
Figure 5. Operating modes for MMA8652FC
Some registers are reset when transitioning from STANDBY to ACTIVE. These registers are all noted in the device memory map
register table.
register table.
The SLEEP and WAKE modes are ACTIVE modes. For more information about how to use the SLEEP and WAKE modes and
how to transition between these modes, see
how to transition between these modes, see
.
Table 7. Operating modes
Mode
I
2
C Bus State
VDD
VDDIO
Description
OFF
Powered down
<1.8 V
VDDIO can be > VDD
• The device is powered off.
• All analog and digital blocks are shutdown.
• I
• All analog and digital blocks are shutdown.
• I
2
C bus inhibited.
STANDBY
I
2
C communication with
MMA8652FC is possible
ON
VDDIO = High
VDD = High
ACTIVE bit is cleared
VDD = High
ACTIVE bit is cleared
• Only digital blocks are enabled.
• Analog subsystem is disabled.
• Internal clocks disabled.
• Analog subsystem is disabled.
• Internal clocks disabled.
ACTIVE
(WAKE/SLEEP)
I
2
C communication with
MMA8652FC is possible
ON
VDDIO = High
VDD = High
ACTIVE bit is set
VDD = High
ACTIVE bit is set
All blocks are enabled (digital, analog).
SLEEP
WAKE
STANDBY
OFF
ACTIVE