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2.
Power
2.1.
Power Supply
The host provides power to the EM7690 through multiple power and ground pins as summarized in
Table
2-1.
The host must provide safe and continuous power (via battery or a regulated power supply) at all
times; the module does not have an independent power supply, or protection circuits to guard against
electrical issues.
Table 2-1
Power and Ground Specifications
Name
VCC
2, 4, 24, 38, 68, 70, 72, 74
(3.3V)
GND
3, 5, 11, 27, 33, 39, 45, 51, 57, 71, 73
2.2.
Module Power States
The module has five power states, as described in
Table 2-2
Module Power States
State
Normal (Default
State)
411139xx
202041113915
Pins
Module is active
Default state. Occurs when VCC is first applied,
Full_Card_Power_Off# is deasserted (pulled high), and
W_DISABLE# is deasserted
Module is capable of placing/receiving calls, or establishing data
connections on the wireless network
Current consumption is affected by several factors, including:
Radio band being used
Transmit power
Receive gain settings
Data rate
Rev 0.1
Rev 0.3
Specification
Min
Voltage range
3.135
Ripple voltage
-
Peak Current
-
Continuous
-
Current
-
Table
2-2.
Details
Typ
Max
Units
3.3
4.4
V
-
100
mV
-
4000
mA
TBD
-
mA
0
-
V
✓
✓
September 23,
September 23, 2020
2
pp
✓
6
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