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 81
5 Product characteristics
5.1 Absolute maximum ratings
Operating the L508 under conditions beyond its absolute maximum ratings (Table 43) may damage
the device.
Table 42 absolute parameters
Parameters Min Max Unit
VBAT limit voltage -0.5 6.0 V
USB limit voltage -0.5 5.8 V
I/O limit voltage: GPIO, I2C, PCM, U A RT, SD 1_DET,
USIM_DET
-0.3 2.1 V
I/O limit voltage: USIM -0.3 3.3 V
5.2 Operating conditions
5.2.1 Operating conditions
Table 43 Normal working voltage of module
Parameters Minimum value Typical value Maximum value Unit
VBAT Voltage 3.4 3.8 4.2 V
USB_VBUS Voltage 3.5 5.0 5.5 V
5.2.2 Work mode
The following table describes the definition of the L508 work pattern.