Operating conditions

The operating conditions are the physical parameters that the chip can operate within.

Table 1. Operating conditions
Symbol	Parameter	Notes	Min.	Nom.	Max.	Units
VDD	Battery input voltage	Including voltage drop, ripple and spikes.	3.0	3.7	5.5	V
		RF 3GPP limited temperature -10°C to 55°C	3.1	3.7	5.5	V
		RF Product Specification operating temperature	3.3	3.7	5.5	V
VDD_GPIO	GPIO input voltage		1.7		3.6	V
GPIO_H	GPIO high level voltage				VDD_GPIO	V
MAGPIO_H	MAGPIO high level voltage	Supply from internal LDO	1.7	1.8	1.9	V
VIO	VIO high level voltage	Supply from internal LDO	1.7	1.8	1.9	V
TA	Operating temperature		-40	25	85	°C
COEX	COEX high level voltage				VDD_GPIO	V
SIMIF	SIMIF output high level voltage	Supply from internal LDO	1.7	1.8	1.9	V

Note: There can be excessive leakage at VDD and/or VDD_GPIO if any of these supply voltages is outside its range given in the table above.

Note: It is not recommended to use high voltage, high drive GPIO outputs (V_OH,HDH and V_OH,HDL) with high frequency, high capacitance loads unless needed, as this may increase noise level and affect radio receiver performance. High drive/high load should especially be avoided on GPIO pins close to the radio front end.

VDD_GPIO considerations

VDD_GPIO is the supply to the general purpose I/O.

The following restrictions should be taken into considerations:

VDD_GPIO should be applied after VDD has been supplied
VDD_GPIO should be removed before removing VDD
If VDD is supplied and VDD_GPIO is grounded, an extra current consumption can be generated on VDD
If ENABLE is low, VDD_GPIO should also be low