Table 17. Network status indication
Module Operating Mode
LED1# Signal
RF function is enabled
Low level (LED on)
RF function is disabled
High level (LED off)
The LED driver circuit is shown in the following figure.
Figure 11. Reference circuit of network status indicators
5.4. (U)SIM Card Interface
FM101-NA-20 module has built-in (U)SIM card interface, and supports 1.8 V and 3.0 V
(U)SIM cards.
5.4.1. (U)SIM Pin Definition
(U)SIM pin definition is described in the following table.
Table 18. (U)SIM pin definition
Pin
Number
Pin Name
I/O
Reset
Status
Description
Type
30
UIM1_RESET
DO
L
USIM1 reset
1.8V/3V
32
UIM1_CLK
DO
L
USIM1 clock
1.8V/3V
34
UIM1_DATA
DIO
L
USIM1 data
1.8V/3V
36
UIM1_PWR
PO
- -
USIM1 power supply
1.8V/3V
5. Functional Interface
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