Sony Ericsson GS64 - Manual (Page 33)

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5.4.2 Common Ground (GND)
GND is the reference, or return signal, for all system interface digital signals, radio
section power, and is also the DC return for the power supply, VCC.
User application circuitry should connect all GND pins together in order to carry the
high current drawn by the wireless modem.
Parameter Per Pin Total Unit
Maximum current (I
MAX
) 600 3600 mA
Maximum average current (I
AVG
) 100 600 mA