# HDL1045: An instantiation should not use too many clock domains ## Summary ```{raw} html

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ReliabilitySecurityMaintainabilityCode attributeEffort to fixTags
HIGH-MEDIUMAdaptability | Focused1hsynthesis, bug-finder, cdc, cnes, clock, cnes-std-04700, linty-ultra
``` ## Description ```{raw} html

An instantiation should not use too many clock domains.

Note that a clock domain used for both rising and falling edges is counted as two separate clock domains.

``` ## Parameters ```{raw} html

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ParameterValueDescription
max1Maximum number of allowed clock domains per instance
``` ```{raw} html ```