SIM Tech SIMCom SIM868 Series User Manual

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SIM868_Series_Hardware_Design_V1.06 58 2017-07-13
8. Electrical, Reliability and Radio Characteristics
8.1. Absolute Maximum Ratings
The absolute maximum ratings stated in Table 34 are stress ratings under non-operating conditions. Stresses
beyond any of these limits will cause permanent damage to SIM868.
Table 34: Absolute maximum ratings
Symbol
Min
Typ
Max
Unit
GSM_V BAT - - 4.5 V
GPS_VBAT - - 4.5
VRTC - - 4.5
GNSS_EN - - 4.5
Current (GSM_VBAT)
0
-
2.0
A
USB_VBUS - - 7 V
I
I
* - 4 16 mA
I
O
* - 4 16 mA
*These parameters are for digital interface pins, GPIO, and UART.
8.2. Recommended Operating Conditions
Table 35: Recommended operating conditions
Symbol Parameter Min Typ Max Unit
GSM_VBAT GSM power supply voltage 3.4 4.0 4.4 V
GPS_VBAT GPS power supply voltage 2.9 4.0 4.4
VRTC
Backup battery voltage
2.3
4.3
GNSS_EN(V
OH
) GPS enable 1.5 2.8 4.4 V
GNSS_EN(V
OL
)
GPS disable
-
-
0.3
V
T
OPER
Operating temperature -40 +25 +85
℃
T
STG
Storage temperature -45 +90
℃
8.3. Digital Interface Characteristics
Table 36: Digital interface characteristics
Symbol Parameter Min Typ Max Unit
V
IH
High-level input voltage
2.1
-
3.0
V
V
IL
Low-level input voltage
-0.3
-
0.7
V
V
OH
High-level output voltage 2.4 - - V
V
OL
Low-level output voltage
-
-
0.4
V
SIMCOM CONFIDENTIAL FILE

SIM Tech SIMCom SIM868 Series Specifications

General

Brand	SIM Tech
Model	SIMCom SIM868 Series
Category	GSM/GPRS Modules
Language	English