Mobile Tech Co. Ltd 64MXFWBF110A Manuale Utente
9
P68
VBACKUP
Supply voltage of RTC
2.8V
P69
AUX_IN5
Auxillary ADC Input
P70
LRSTB
Parallel display interface RST
GPIO41
PD
DVDD
P71
LPTE
Parallel display interface
GPIO40
PD
DVDD
P72
Vcdt
Vcharge Detect
>Vbat and
<6V
Notice: 1.VDD(2.7V-2.9V)
2.VDDMSDC(2.7V-3.6V)
3.DVDD(1.7V-1.95V)
3.3.
3.3.
3.3.
3.3. Operating
Operating
Operating
Operating modes
modes
modes
modes
The following table summarizes the various operating modes, each operating modes is
referred to in the following chapters.
referred to in the following chapters.
Table
Table
Table
Table 2
2
2
2：Overview
Overview
Overview
Overview of
of
of
of operating
operating
operating
operating modes
modes
modes
modes
Mode
Mode
Mode
Mode
Function
Function
Function
Function
Normal
operation
operation
GSM/GPRS
Sleep
Sleep
Module will automatically go into Sleep mode if there is
no air link activation and no hardware interrupt (such as
GPIO interrupt or data on serial port).
In this case, the current consumption of module will
reduce to the minim.
During sleep mode, the module can still receive paging
message.
no air link activation and no hardware interrupt (such as
GPIO interrupt or data on serial port).
In this case, the current consumption of module will
reduce to the minim.
During sleep mode, the module can still receive paging
message.
GSM IDLE
Module has registered to the GSM network, and the
module is ready to send and receive.
module is ready to send and receive.
GSM TALK
CSD connection is going on between two subscribers. In
this case, the power consumption depends on network
condition and settings such as DTX off/on, FR/EFR/HR,
hopping sequences.
this case, the power consumption depends on network
condition and settings such as DTX off/on, FR/EFR/HR,
hopping sequences.
GPRS IDLE
Module is ready for GPRS data transfer, but no data is
currently sent or received. In this case, power
consumption depends on network settings and GPRS
configuration (e.g. multi-slot settings).
currently sent or received. In this case, power
consumption depends on network settings and GPRS
configuration (e.g. multi-slot settings).
GPRS
DATA
DATA
There is GPRS data in transfer (PPP or TCP or UDP). In
this case, power consumption is related with network
settings (e.g. power control level), uplink / downlink
data rates and GPRS configuration (e.g. used multi-slot
settings).
this case, power consumption is related with network
settings (e.g. power control level), uplink / downlink
data rates and GPRS configuration (e.g. used multi-slot
settings).
POWER
DOWN
DOWN
The power management ASIC disconnects the power supply from the
base band part of the module, only the power supply for the RTC is
remained. Software is not active. The serial interfaces are not accessible.
base band part of the module, only the power supply for the RTC is
remained. Software is not active. The serial interfaces are not accessible.
Alarm
mode
mode
RTC alert function launches this restricted operation while the module is
in POWER DOWN mode. MD251 will not be registered to GSM
network and only parts of AT commands can be available.
in POWER DOWN mode. MD251 will not be registered to GSM
network and only parts of AT commands can be available.