H330SS LGA Module Hardware User Manual Page 29 of 38
5.5.3
Ring Indicator
UART1_R1 is used for indicating incoming call and SMS, sending pulse to host application program.
Module Mode
Status
No ringing
Low level
Ringing
1s high level, 1s low level, cycling
No message
Low level
Incoming message
150ms pulse
5.6
USIM
H330S wireless communication module supports USIM and high speed SIM card, does not support 8 line smart
USIM yet.
5.6.1
USIM Interface
Pin#
Pin Name
I/O
Description
5
USIM_VCC
O
USIM power supply output
6
USIM_RST
O
USIM Reset signal
7
USIM_CLK
O
USIM clock signal
8
USIM_IO
I/O
USIM data signal
12
GND
GND
USIM ground
4
USIM_CD
I
USIM insert detect signal
High level indicates SIM card is not inserted
Low level indicates SIM card is inserted