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Power on/off, or for external low current (< 80mA) circuits. leave the signal floating if no use. The logic
level of VDD_EXT is defined as follows:
Table 4-3 VDD_EXT logic level
Parameter
VDD_EXT
4.4 Power Consumption
The power consumption of NL668-LA series module measured at 3.8V power supply is shown as follow
table, for USB sleep and USB wakeup AT commands please refer to 6.1.2 section:
Table 4-4 Power consumption
Parameter
Mode
I
Power off
off
GSM
WCDMA
I
idle
LTE FDD
Radio off
LTE TDD
Radio off
GSM
WCDMA
LTE FDD
I
sleep
LTE TDD
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FIBOCOM NL668-LA Series Hardware Guide
Minimum
1.71
Condition
Module power off
MFRMS=5 (USB sleep)
wakeup
MFRMS=5 (USB
DRX=8 (USB sleep)
DRX=8
wakeup
(USB
Paging cycle #64 frames (USB sleep)
Paging cycle #64 frames
Paging cycle #64 frames (USB sleep)
Paging cycle #64 frames
AT+CFUN=0,0 (USB sleep)
AT+CFUN=0,0
(USB
MFRMS=5 (USB sleep)
DRX=8 (USB sleep)
Paging cycle #64 frames (USB sleep)
Paging cycle #128 frames (USB sleep)
Paging cycle #256 frames (USB sleep)
Paging cycle #64 frames (USB sleep)
Paging cycle #128 frames (USB sleep)
Paging cycle #256 frames (USB sleep)
Typical
Maximum
1.8
1.89
)
)
wakeup
(USB
)
wakeup
(USB
)
wakeup
)
Unit
V
Average Current Typ. (mA)
0.03
20
30
20
30
20
30
20
30
20
30
3
3
4
3
3
4
3
3
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