Cinterion
®
ELS31-VA/ELS51-VA Hardware Interface Description
2.3 Sample Application
56
ELS31-VA_ELS51-VA_HID_v01.000
2017-01-04
Confidential / Preliminary
Page 55 of 106
Figure 29:
Schematic diagram of ELS31-VA/ELS51-VA sample application
ELS31/ELS51
Main Antenna
Div. Antenna
BATT+RF
BATT+BB
GPIOs
LED
COUNTER
I2CCLK
I2CDAT
GND
SDIO
HSIC
ON
FST_SHUTDOWN
ASC0
ASC1
USB
V180
CCIN
CCVCC
CCIO
CCRST
CCCLK
Power Supply
33pF
33pF
+ 150
µF
Low ESR!
2k2
2k2
V180
Bl
oc
ki
ng
WiFi
µC
1nF
10pF
10pF
220nF
SIM
USB
Interfaces available only on ELS51