LISA-C2 series and FW75-C200 - System Integration Manual
UBX-13000620 - R21
Early Production Information
System description
Page 13 of 103
LISA-C200 and FW75-C200 modules must be supplied via the
VCC
pins. There is only one main power supply
input, available on the three
or five
VCC
pins that must all be connected to the external power supply.
The
VCC
pins are directly connected to the RF power amplifiers and to the integrated Power Management Unit
(PMU) within the module: all supply voltages needed by the module are generated from the
VCC
supply by
integrated voltage regulators.
When a 1.8 V or a 3 V SIM card type is connected, LISA-C200 and FW75-C200 modules automatically supply the
SIM card via the
VSIM
pin. Activation and deactivation of the SIM interface with automatic voltage switch from
1.8 to 3 V is implemented, in accordance to the ISO-IEC 7816-3 specifications.
The 2.8 V domain used internally is also available on the
V_INT
pin, to allow more economical and efficient
integration of the FW75-C200 module in the final application.
The 1.8 V domain used internally is also available on the
V_INT
pin, to allow more economical and efficient
integration of the LISA-C200 module in its final application.
The integrated Power Management Unit also provides the control state machine for system start-up and system
shut-down control.
1.5.2
Module supply (VCC)
LISA-C200 and FW75-C200 modules must be supplied through the
VCC
pins by a DC power supply. Voltages
must be stable: during operation, the current drawn from
VCC
can vary by some orders of magnitude.
Though a module can work within a large voltage range, the module’s performance shall be optimized when the
nominal VCC voltage of 3.8 V DC is applied. It is strongly suggested that a module be powered in design with a
3.8 V DC power supply VCC.
Name
Description
Remarks
VCC
Module power supply input
VCC
pins are internally connected, but all the available pads or pins
must be connected to the external supply in order to minimize the
power loss due to series resistance.
Clean and stable supply is required: low ripple and low voltage drop
must be guaranteed.
Voltage provided must always be above the minimum limit of the
operating range.
GND
Ground
GND
pins are internally connected but a good (low impedance)
external ground can improve RF performance: all available pads or pins
must be connected to ground.
Table 5: Module supply pins
Higher ESD protection level can be required if VCC is externally accessible on the application board. A
higher protection level can be achieved by mounting an ESD protection (e.g. EPCOS CA05P4S14THSG
varistor array) on the line connected to this pin.
The voltage provided to the VCC pins must be within the normal operating range limits as specified in the
[1] or,
FW75-C200 Data Sheet
[2]. Complete functionality of the module is only
guaranteed within the specified minimum and maximum VCC voltage operating range.
Ensure that the input voltage at the VCC pins never drops below the minimum limit of the operating range
when the module is switched on.
Operation above the operating range maximum limit is not recommended and extended
exposure beyond it may affect device reliability.
Stress beyond the VCC absolute maximum ratings can cause permanent damage to the module: if
necessary, voltage spikes beyond VCC absolute maximum ratings must be restricted to values
within the specified limits by using appropriate protection.
1
LISA-C200.
2
FW75-C200 -
