Installation Instructions
Table Of Contents
- Contents
- List of Table
- List of Figures
- 1 About this document
- 2 Product Overview
- 3 Mechanical Dimensions
- 4 Interface description
- 4.1 Pin Definition
- 4.2 Operating conditions
- 4.3 Digital logic characteristics
- 4.4 Power interface
- 4.5 USIM card interface
- 4.6 PCM interface
- 4.7 USB2.0 interface
- 4.8 UART interface
- 4.9 SPI interface
- 4.10 I2C interface
- 4.11 Network light
- 4.12 System Status Indication
- 4.13 Flight Mode
- 4.14 Forced USB download interface
- 4.15 SD card interface
- 4.16 SDIO_WIFI/EMMC interface
- 4.17 PCIe interface
- 4.18 RMII/RGMII interface
- 4.19 AUDIO interface
- 4.20 ADC
- 4.21 GPIOs
- 4.22 Power on/off and reset interface
- 4.23 Antenna interface
- 5 Product characteristics
- 6 Design Guideline
- 7 Storage, Production and Package
- 8 Safety Information
- 空白页面
- 空白页面
L508 Hardware Design
Copyright© Shanghai Mobiletek Communication Ltd 83
removing the power supply. In this mode, the RF
part of the module will not work or the USIM card will
not be accessible, orboth RF part and USIM card will
be closed, and the serial port is still accessible. The
power consumption in this mode is lower than normal
mode.
Power off
Through the "AT + CPOF" command or lower
PWRKEY pin can power off L508. At this mode, the
module of internal power supply will be closed, and
the system is stop running also. The UART and USB
are unavailable.
Sleep mode
In sleep mode, the module power consumption to a
minimum, but the module is still able to receive
paging information and SMS.
5.2.3 Current consumption (TBD)
Table 45 VBAT consumption current (VBAT = 3.8V)
Power off
Power off current 20uA
GSM Sleep/Idle
GSM/GPRS supply current
（GNSS off，without USB）
Sleep mode @ BS_PA_MFRMS=2 Typical:
Idle mode @ BS_PA_MFRMS=2 Typical：
UMTS sleep/idle
WCDMA current
（GNSS off，without USB）
Sleep mode @DRX=9 typical：
Idle mode @DRX=9 typical：
TD-SCDMA current
（GNSS off，without USB）
Sleep modetypical：
Idle modetypical：