User's Manual

LTE Module
EC20 Hardware Design
EC20_Hardware_Design Confidential / Released 15 / 83
3 Application Interface
3.1. General Description
EC20 is equipped with a 76-pin 1.3mm pitch SMT pads plus 64-pin ground pads and reserved pads that
connect to cellular application platform. Sub-interfaces included in these pads are described in detail in
the following chapters:
Power supply
USIM interface
USB interface
UART interface
PCM interface
ADC interface
Status indication