User's Manual l MBa335x UM 0202 l © 2018, TQ-Systems GmbH
Page 53
7.
SAFETY REQUIREMENTS AND PROTECTIVE REGULATIONS
7.1
EMC
Because the MBa335x is a development platform, no EMC specific tests have been carried out.
During the development of the MBa335x the following standard was taken into account:
•
EMC-Interference radiation: According to DIN EN 55022 A1:2007
7.2
ESD
Most of the interfaces on the MBa335x are protected against electrostatic discharge.
The interfaces, which provide an ESD protection is to be taken from the circuit diagram.
7.3
Operational safety and personal security
Due to the occurring voltages (
≤
30 V DC), tests with respect to the operational and personal safety haven’t been carried out.
8.
CLIMATIC AND OPERATIONAL CONDITIONS
In general reliable operation is given when the following conditions are met.
Table 86:
Climatic and operational conditions MBa335x
Parameter
Range
Remark
Environmental temperature
0 °C to +70 °C
Without Lithium battery
Environmental temperature
0 °C to +60 °C
With Lithium battery
Storage temperature
–10 °C to +60 °C
–
Relative air humidity (operation / storing)
10 % to 90 %
Not condensing
Attention:
The CPU belongs to a performance category in which a cooling system may be essential in certain
applications. It is the user’s responsibility to define a suitable cooling method depending on the
specific mode of operation (e.g., dependence on clock frequency, stack height, airflow, and software).
8.1
Protection against external effects
Protection class IP00 was defined for the MBa335x. There is no protection against foreign objects, touch or humidity.
8.2
Reliability and service life
No detailed MTBF calculation has been done for the MBa335x.
The MBa335x is designed to be insensitive to vibration and impact.
High quality industrial grade connectors are assembled on the MBa335x.
The device is designed for a typical product life of 10 years.
Excluded is the lithium cell, which must be renewed after about 5 years.
9:
The JTAG interface has no ESD protection.
