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rloader
Level 2
Level 2
10 sign-ins 5 questions asked 5 sign-ins

Looking at the CYT4BB clocking diagrams, the only > 1MHz clock option for the watchdogs (WDT, MCWDT) appears to be the ECO.

This is a problem for me, because I am using an oscillator with EXTCLK. The EXTCLK pin used however is 21.2, which is shared with the ECO.

Question: Is it supported to use ECO with an external (LVCMOS, 3.3V) oscillator rather than a crystal?

P21.3 is unconnected, so no concerns about load levels etc on that pin.

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Yuva
Moderator
Moderator
Moderator
250 replies posted 250 sign-ins 100 solutions authored

Hello,

The ECO circuit is expected to work with crystal, so external oscillator can not be used with the same. 

Thanks.

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