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The following page content corresponds to the products formerly marketed by NEC Electronics

Applications > Automotive Electronics > Safety Control >

Airbag systems


In airbag systems, the number of satellite sensors that detect a collision and the number of bags has tended to increase in order to improve the safety of passengers during a collision.

Microcontrollers capable of high-speed processing are required to process the data input from the sensors at high speeds and appropriately control triggering of the airbags.

A high-speed SPI function and peripheral functions such as CAN and LIN buses are also required to perform cooperative control between peripheral devices and other modules.

Our 32-bit microcontrollers for automotive applications meet these needs. Also, our ESD protection diodes are suitable for protecting against external noise and bidirectional surges that may occur during CAN or LIN communication and for minimizing devices and reducing their price.

* CAN : Controller Area Network
* LIN : Local Interconnect Network
* SPI : Serial Peripheral Interface

Airbag systems


Functional block diagram of Airbag systems

Functional block diagram of Airbag systems

Recommended device

Microcontroller


Product Name/Alias Features
V850ES/Fx3 32-bit All Flash microcontroller: on-chip A/D converter with 10-bit resolution, high-speed 32 or 48 MHz operation, CAN and LIN buses,64 to 176 pins
V850E/RG3 32-bit All Flash microcontroller: 3.3 V and 5 V compatible versions, buffered CSI with automatic Chip Select generation, DMA, on-chip A/D converter with 10-bit resolution, high-speed up to 80 MHz operation, CAN and LIN support, 100-pin LQFP package


Diode


Product Name/Alias Features
NNCD[]DT,NNCD []ST ESD protection diode for CAN and LIN communication, composite elements mounted in one package
NNCD [ ] DT: 2 elements and 1 circuit
NNCD [ ] ST: 4 elements and 2 circuits