SimCom SIM800 Series, Проектирование аппаратного обеспечения

Страница: 53 / 67

Smart Machine Smart Decision
SIM800_Hardware Design_V1.10 53 2018-08-13
6. Electrical, Reliability and Radio Characteristics
6.1 Absolute Maximum Ratings
The absolute maximum ratings stated in following table are stress ratings under non-operating conditions.
Stresses beyond any of these limits will cause permanent damage to SIM800.
Table 35: Absolute maximum ratings
Symbol Min Typ Max Unit
VBAT - - 4.5 V
Peak Current 0 - 2.0 A
USB_VBUS - - 12 V
I
I
* - 4 mA
I
O
* - 4 mA
These parameters are for digital interface pins, such as keypad, GPIO, I2C, UART, LCD and PCM.
6.2 Recommended Operating Conditions
Table 36: Recommended operating conditions
Symbol Parameter Min Typ Max Unit
VBAT Power supply voltage 3.4 4.0 4.4 V
T
OPER
Operating temperature -40 +25 +85 °C
T
STG
Storage temperature -45 +90 °C
6.3 Digital Interface Characteristics
Table 37: 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
* These parameters are for digital interface pins, such as keypad, GPIO, I2C, UART, and PCM.