Products
L503 Introduction

Overview
L503 is a Cat1 module for LCC+LGA package, with stable and reliable performance. It can well meet customer's requirements for cost-effective, low-power applications.
L503 size is only 22.9*21.9*2.3mm and very convenient for SMT. It can meet the needs of customers for small module products and facilitate customers to reduce product size and optimize product costs. All of these features make it suit to IoT areas, such as PoC, Mobile payment, security and alarm systems, on-board vehicle, DTU, asset tracking, sharing economy, etc
Feature
Main Features
Frequency Bands:
TDD-LTE:
B38/B40/B41
FDD-LTE:
B1/B3/B5/B7/B8/B20/B28
GSM/EDGE:
B3/B5/B8
Output Power:
LTE: 23dBm±2dB
Support AT command
Operation Temperature Range:
-40℃ ~ +85℃
Supply Voltage Range:
3.3 ~ 4.5V (3.8V Typ)
Dimensions:
22.9*21.9*2.3mm
Package:
96-pin LCC+LGA
Weight:
Approx 2.5g
Power consumption
LTE Standby:
1.2mA@3.8V
Flight mode:
1mA@3.8V
Data transmission
Support LTE Cat1:
DL 10Mbps
UL 5Mbps
Interfaces
UART
(U)SIM(3.0V/1.8V)
I2C
USB 2.0
ADC
SPI
PCM
GPIO
Reset
Powerkey
Analog Audio
Antenna
Other Features
Firmware Update:Firmware updated via USB
USB Drivers:Microsoft Windows XP/7/8/10
Support WIFI SCAN
Support TCP/UDP/HTTP/FTP/MQTT/SSL/FOTA/PPP
Other Features
CCC/SRRC/CE