Clock Monitoring function

[wiz_yoo]

Dear nordic.

I am testing with nRF51822, and have some question about hardware stability check.

nRF51822 have Clock Monitor Unit (Clock fault detector)? Is WDT same to Clock Monitor Unit?

I can't find CMU in pdf file.

1. nRF51822 Product Specification v3.2

2. nRF51 Series Reference Manual

thank you.

[Ole Bauck]

Where did you find information about the Clock Monitor Unit?

[wiz_yoo]

Dear Ole Bauck.

I found CMU in NXP reference manual (MPC5606BK).

I want safety of system clock. Is nRF51822(cortex M0) safe through detecting or reset, when System Clocks (HFCLK, LFCLK) is in problem (slow, fast or not working)?

thanks and best regards.

[Ole Bauck]

There is no such module on nRF51. See Reference Manual Chapter 13.1 for description of the clock management on nRF51.