tmp1940cyaf TOSHIBA Semiconductor CORPORATION, tmp1940cyaf Datasheet - Page 37

• Manufacturer Part Number: tmp1940cyaf
• Description: 32-bit Tx System Risc Tx19 Family
• Manufacturer: TOSHIBA Semiconductor CORPORATION

3.6.6
3.6.7
3.6.8
3.7
Light striking a semiconductor device generates electromotive force due to photoelectric effects.
In some cases the device can malfunction. This is especially true for devices in which the internal
chip is exposed. When designing circuits, make sure that devices are protected against incident
light from external sources. This problem is not limited to optical semiconductors and EPROMs.
All types of device can be affected by light.
Just like corrosive gases, dust and oil can cause chemical reactions in devices, which will
adversely affect a device’s electrical characteristics. To avoid this problem, do not use devices in
dusty or oily environments. This is especially important for optical devices because dust and oil
can affect a device’s optical characteristics as well as its physical integrity and the electrical
performance factors mentioned above.
Semiconductor devices are combustible; they can emit smoke and catch fire if heated sufficiently.
When this happens, some devices may generate poisonous gases. Devices should therefore never
be used in close proximity to an open flame or a heat-generating body, or near flammable or
combustible materials.
When discarding unused devices and packing materials, follow all procedures specified by local
regulations in order to protect the environment against contamination.
Disposal of Devices and Packing Materials
Interference from light (ultraviolet rays, sunlight, fluorescent lamps and
incandescent lamps)
Dust and oil
Fire
3 General Safety Precautions and Usage Considerations
23