MEIG SLM 320 - Electrical characteristics; 6.1 Absolute Maximum Ratings; 6.2 Ambient Temperature Range; 6.3 Interface Working State Electrical Characteristics

MeiG_SLM320_Hardware Design Manual
MeiG Smart Technology Co., Ltd
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6 Electrical characteristics
6.1 Absolute Maximum Ratings
Absolute maximum ratings refer to the maximum voltage range that the module supply voltage and
digital and analog input/output interfaces can withstand. Work outside this range may cause damage to
the product.
Table 25 Absolut Maximum Ratings
Parameters Description Min Typical value Max Units
VBAT
Power supply -0.3 3.6 5.5 V
GPIO
Digital I/O level supply
voltage
-0.3 1.8 2.0 V
VBUS USB Insert the test -0.3 5.0 9.2 V
6.2 Ambient Temperature Range
The SLM320 module is recommended to operate at -30~+75℃. It is suggested that temperature control
measures should be considered at the application end under adverse environmental conditions. At the
same time, the extended operating temperature range of the module is provided. When used at the
extended temperature, the function is normal, and some RF indicators may deteriorate. It is also
recommended that the module application terminal be stored at a certain temperature. Modules outside
this range may not work properly or may be damaged.
6.3 Electrical Characteristics of Interface Working State
V
L
：Logic low level
V
H
：Logic high level
Table 26 The logic level of a normal digital IO signal
Signal
VL
VH
Unit
Min
Max
Min
Max
digital input -0.3 0.6 1.2 2.0 V
digital output 0.45 1.35 V