Not applicable
Feb 22, 2017
09:31 AM
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Feb 22, 2017
09:31 AM
Hi all,
I suppose I am trying to figure out what the PORST rise time requirement, on pg 78 (table 38), means for my upcoming design. I see in the relax kit this pin is simply pulled up to +3.3V. Would this mean that my power supply would have to rise at a certain rate? Or do I need to put a power supervisor IC to make sure the system remains in reset until the power is fully stable? Generally I voltage regulators I use have a couple of millisecond rise times.
Thanks
sheitbrink
I suppose I am trying to figure out what the PORST rise time requirement, on pg 78 (table 38), means for my upcoming design. I see in the relax kit this pin is simply pulled up to +3.3V. Would this mean that my power supply would have to rise at a certain rate? Or do I need to put a power supervisor IC to make sure the system remains in reset until the power is fully stable? Generally I voltage regulators I use have a couple of millisecond rise times.
Thanks
sheitbrink
2 Replies
Feb 24, 2017
06:28 AM
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Feb 24, 2017
06:28 AM
Hi,
I would just copy the values from our reference designs.
Further guidelines can be found in http://www.infineon.com/dgdl/APP_XMC4000_PCB_Design_Guidelines_v1_0.pdf?fileId=db3a3043427ac3e201427...
Regards,
Jesus
I would just copy the values from our reference designs.
Further guidelines can be found in http://www.infineon.com/dgdl/APP_XMC4000_PCB_Design_Guidelines_v1_0.pdf?fileId=db3a3043427ac3e201427...
Regards,
Jesus
Feb 28, 2017
03:07 AM
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Feb 28, 2017
03:07 AM
Several milliseconds to stabilize? Which regulator are you using?