Specifications
L506 Hardware Design 
Copyright©  Shanghai  Mobiletek  Communication  Ltd                                                              51 
4 Product characteristics 
4.1 Absolute parameters 
The following table shows the state of the absolute maximum work in abnormal situation.Exceed the limit 
value will likely result in permanent damage to the module. 
Table 4-1L506 absolute parameters 
Parameter 
Min. 
Max. 
Unit 
VBAT absolute voltage parameter 
-0.5 
6.0 
V 
USB_VBUSabsolute voltage parameter 
-0.5 
5.25 
V 
I/O absolute voltage parameter: 
PWRKEY,RESET,SPI,GPIO,I2C,PCM,UART,SD1_DET,USIM_DET 
-0.3 
2.1 
V 
I/O absolute voltage parameter: 
SD and USIM 
-0.3 
3.05 
V 
4.2 Operation condition 
4.2.1 Operation voltage 
This  product  is  a  DC  input  voltage  range  of  3.4  V  to  4.2  V,  the  typical  value  of  3.8  V,  as  s
hown  in  below  table. 
Table 4-2 Input DC voltage 
Parameter 
Min. 
Typ. 
Max. 
Unit 
VBAT Voltage 
3.4 
3.8 
4.2 
V 
USB_VBUS Votage 
2.0 
5.0 
5.25 
V 
About L506 dc electric property, please refer to part 3.3 digital I/O characteristics. 
4.2.2 Work mode 
Table 4-3 work mode 
Mode 
Description 
Normal  operation 
mode 
(GSM/WCDMA 
/TD-SCDMA/EVDO/LTE)
Sleep 
In this case, the current consumption of module 
will bereduced to the minimal level. 
In sleep mode, the module can still receive paging 
message and SMS. 










