Locking/unlocking car door via relay locking or LIN?

[gunsumlut]

I was thinking of locking/unlocking a car door by driving the central locking relay via an MCU. Are S12ZVL products better suited for interacting with car door locking/unlocking mechanism ? 

Thanks,

Gun

[RadekS]

Hi Gun,

Yes, you may use S12ZVL for such job.

However, I would like to recommend also consider S12VR (or potentially MM912G634) MCU.

The S12VR contains 2 low side drivers for direct relay driving (inductive load drivers).

http://www.nxp.com/products/automotive-products/microcontrollers-and-processors/16-bit-s12-magniv/s1...

http://www.nxp.com/products/automotive-products/smart-power-drivers/engine-and-dc-motor-control/powe...

If you don’t need a highly integrated solution, you may also use general purpose MCU like S12G (or some of S08 MCUs) and external analog solution (LDO regulator, LIN PHY, relay driver).

I hope it helps you.

Have a great day,
Radek

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