You are here

FlexRay Development Platforms | Cypress Semiconductor

FlexRay Development Platforms

Last Updated: 
Apr 19, 2016

 FlexRay Starter Kit |  FAQ |  Bug history |


List of Limitations about FlexRay Evaluation kit (MB2005-01)

About interrupts using Interrupt_A or Interrupt_B

Phenomenon

There is an event to which an interrupt processing using Interrupt_A or Interrupt_B cannot be applied.

Cause

The Interrupt_A and Interrupt_B signals issued from the FlexRay main board requires 5V input "H" level voltage for the CPU board. However, depending on the board characteristics, the "H" level voltage for the CPU board cannot always be satisfied.

Measure

Adding a 1.2 KΩ pull-up resistor supplying 5 V from the CPU board to Interrupt_A, Interrupt_B, DEOP_0, or ULB_DREQ can solve this problem.

This content contains information on Cypress products that have been migrated from Spansion's website in conjunction with our merger. Although marked with the name of the company that developed the material (Spansion or Fujitsu), Cypress continues to offer the content to our customers. There is no change to this information as a result of this migration. Future revisions will occur when appropriate, and changes will be noted in the revision history.