# Can openmv set a timer isr of100us?

**URL:** <https://forums.openmv.io/t/can-openmv-set-a-timer-isr-of100us/9693>\
**Category:** OpenMV Boards\
**Created:** [June 15, 2024, 12:12am UTC](https://forums.openmv.io/t/can-openmv-set-a-timer-isr-of100us/9693 "2024-06-15T00:12:36Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![sjh2100](https://yyz1.discourse-cdn.com/flex029/user_avatar/forums.openmv.io/sjh2100/32/2979_2.png) [@sjh2100](https://forums.openmv.io/u/sjh2100)\
**Post date:** [June 15, 2024, 12:12am UTC](https://forums.openmv.io/t/can-openmv-set-a-timer-isr-of100us/9693/1 "2024-06-15T00:12:36Z")

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i want to know the max frequency of timer isr in openmv. 100khz or 1Mhz ?

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**Author:** ![kwagyeman](https://yyz1.discourse-cdn.com/flex029/user_avatar/forums.openmv.io/kwagyeman/32/4_2.png) [@kwagyeman](https://forums.openmv.io/u/kwagyeman)\
**Post date:** [June 15, 2024, 1:10am UTC](https://forums.openmv.io/t/can-openmv-set-a-timer-isr-of100us/9693/2 "2024-06-15T01:10:48Z")

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Yes, the limit would be 1/2 the clock frequency. Note, if you were to do that the system would lockup.

Keep in mind that the load on the system can become extreme at that rate.