Table 2-8: Miscellaneous DC power consumption (MC8780 / MC8781 / MC8785V /
MC8790 / MC8790V / MC8791V / MC8792V)
Signal
Description
Band
Typ
Max
Units
Notes / Configuration
VCC
Module OFF
leakage current
All bands
400
600
μ
A
Full operating temperature
range
USB transmit
current
All bands
10
10
mA
Full speed USB connection,
C
L
= 50 pF on D+ and D-
signals
CDMA and GSM / UMTS Mini Card Hardware Integration Guide
34
Proprietary and Confidential
2130114
In the event of a discrepancy in values between this guide and the Product Specification Document (PSD), the PSD takes precedence.
Modes
Transmit and Receive modes
Current
consumption
in
transmit
or
receive
mode
(in
a
call
or
data
connection)
is
affected
by
several
factors,
such
as:
•
Radio
band
being
used
•
Transmit
power
•
Receive
gain
settings
•
Data
rate
•
Number
of
active
Transmit
time
slots
(for
transmit
mode)
Sleep mode
Sleep
mode
is
the
normal
state
of
the
module
between
calls
or
data
connections.
In
this
reduced
power
mode,
the
module
cycles
between
wake
(polling
the
network)
and
sleep,
at
an
interval
determined
by
the
network
provider.
Deep sleep
Deep
sleep
mode
is
a
reduced
power,
out
‐
of
‐
network
‐
coverage
mode,
that
the
module
enters
when
it
cannot
acquire
network
service
after
several
minutes.
The
module
then
exits
deep
sleep
periodically
to
try
to
acquire
service,
and
if
successful,
attempts
to
register.
Shutdown mode
While
in
shutdown
mode,
the
module
is
powered
off,
but
still
draws
a
minimal
current
from
the
host
power
supply.
SED (Smart Error Detection)
(MC87xx
only)
The
MC87xx
modem
uses
a
form
of
SED
to
track
recurrent
premature
modem
resets.
In
such
cases,
the
modem
automati
‐
cally
forces
a
pause
in
boot
‐
and
‐
hold
mode
at
power
‐
on
to
accept
an
expected
firmware
download
to
resolve
the
problem.
