User's Manual

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peiker acustic GmbH & Co. KG, Max-Planck-Straße 28-32, D-61381 Friedrichsdorf, Amtsgericht Bad Homburg HRA 1897
phG: peiker Verwaltungs GmbH, Vorsitzender der Geschäftsführung: Andreas Peiker, Geschäftsführer: Reinhard Kromer-von Baerle, Amtsgericht Bad Homburg HRB 1369
Vorsitzender des Aufsichtsrates: Dr. Helmut Rothenberger Ein Unternehmen der peiker Firmengruppe
3.3.2.1.2. Nominal values
Table 7: nominal values of the NAD6200 - module
Parameter
Min
Typ
Max
Unit
Voltage supply
3.7
3.8
3.9
V
Current supply
2.5
A
Voltage drop @ GSM
power burst (33 dBm)
for an external voltage
regulator
100
mV
3.3.2.2. KPD_Power
3.3.2.2.1. Description
This signal is used to switch on the NAD6200 module.
After the main power VPH_Power (3.8V) is applied to the NAD6200 module, the module will not start
automatically. To start the power regulators of the module KPD_Power must be pulled against ground
for at least 60 ms.
KPD_POWER input has an internal weak pull up against VPH_Power. Due to this fact it is recommended
to pull the input against GND using an open drain or open collector circuit.
Because of EMC constraints it might be necessary to add an additional stronger pull up against the
VPH_Power.
It is also possible to connect the KPD_Power input directly to Ground. In this case the module will start
up immediately after VPH_Power turned on.
3.3.2.2.2. Electrical characteristics
Table 8: Electrical characteristics of KPD_Power
PIN
Parameter
Comment
7
KPD_POWER
Pull down with
open Collector
3.3.2.3. RES_IN
3.3.2.3.1. Description
The reset input can be used either to switch off the module or to reset the module. In case that the
module is already powered on and the KPD_Power is in pull up state this signal must be driven against
ground for 250 ms to switch off the module. The module will remain switched off until the reset signal is
released to pull up state and until there is no new KPD_Power on sequence.
In case of that the KPD_Power pin is connected directly to ground the internal regulators of the module
will also switch off, but only for a few ms and then a new power on sequence starts automatically.
RES_IN input has an internal weak pull up against VREG_MSME (1.8V). Due to this fact it is
recommended to pull the input against GND using an open drain or open collector circuit.
Because of EMC constraints it might be necessary to add an additional stronger pull up against the
VREG_MSME (1.8V).