Cypress MicroSystems has available a reference design that enables automotive engineers to build advanced applications with LIN bus (local interconnect network) communication capabilities, using a single PSoC microcontroller.
The LIN Protocol Specification Version 1.2 is a low-speed communications standard used in many automotive applications, including body control, driver information, multimedia, climate control, safety equipment, cockpit electronics and human machine interface (HMI).
According to the company, the software-configurable PSoC MCU can replace thousands of custom microcontrollers in a broad range of embedded systems - speeding time-to-market, reducing the number of chips and decreasing overall system cost. Its flexible architecture offers significant advantages for LIN bus applications.
The PSoC MCU includes blocks of analog and digital logic that can be reconfigured to perform multiple functions. Designers of automotive systems can therefore re-use the resources on a PSoC device to create all three configurations defined by the LIN bus specification - synchronisation procedure, data transmission and data reception - and switch between them on the fly without extra hardware. Also, the digital PSoC blocks used to implement the LIN bus protocols minimise the required CPU loading. This frees the processor core to manage other system functions.
The PSoC microcontroller family integrates an 8-bit CPU, 4 to 16 KBytes of flash memory, SRAM, and programmable 'PSoC blocks' of analog and digital system functions, in small-footprint packages. The new reference design uses the digital PSoC blocks to implement an example LIN bus application, and supports all of the recommended baud rates.
For more information contact Simon Churches, Arrow Altech Distribution, 011 923 9600, [email protected]
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