User's Manual

LTE Module
EC20 Hardware Design
EC20_Hardware_Design Confidential / Released 43 / 83
The following table describes the characteristic of the ADC function.
Table 16: Characteristic of the ADC
Parameter
Min.
Typ.
Max.
Unit
ADC0 Voltage Range
0.3
VBAT_BB
V
ADC1 Voltage Range
0.3
VBAT_BB
V
ADC Resolution
15
bits
3.14. Network Status Indication
The network indication pins can be used to drive a network status indicator LED. The module provides
two pins which are NET_MODE and NET_STATUS. The following tables describe pin definition and logic
level changes in different network status.
Table 17: Pin Definition of Network Indicator
Pin Name
Pin No.
I/O
Description
Comment
NET_MODE
5
DO
Indicate the module network registration
mode.
1.8V power domain
NET_STATUS
6
DO
Indicate the module network activity
status.
1.8V power domain
Table 18: Working State of the Network Indicator
Pin Name
Status
Description
NET_MODE
Always High
Registered in LTE network
Always Low
Others
NET_STATUS
Flicker slowly (200ms High/1800ms Low)
Network searching
Flicker slowly (1800ms High/200ms Low)
Idle
Flicker quickly (125ms High/125ms Low)
Data transfer is ongoing
Always High
Voice calling