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User21081
Level 1
Level 1
When running an erase on a single sector, 8K bytes, it takes a little over 106ms. Is this erase time typical? Causes problems with my 100ms watch dog. Curious if I'm doing something wrong.
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6 Replies
Darren_Galpin
Employee
Employee
First solution authored First like received
The erase times are given in the data flash erase time per sector in https://www.infineon.com/dgdl/Infineon-TC29xBC-DataSheet-v01_00-EN.pdf?fileId=5546d462694c98b4016953....

The time of course depends on the frequency, but I make one sector being 2.3 ms or so, which should be well within your watchdog limitl
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MoD
Employee
Employee
250 sign-ins 25 likes received 50 solutions authored
The erase time is a dependent of the erase counts. With the erase counts also the erase time is increased. Typical erase time (erase count < 1000) is 120ms per single sector.
Why you have a problem with the watchdog during flash erase? You can service the watchdog during wait for erase finished when your watchdog is enabled.
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User21081
Level 1
Level 1
MoD wrote:
The erase time is a dependent of the erase counts. With the erase counts also the erase time is increased. Typical erase time (erase count < 1000) is 120ms per single sector.
Why you have a problem with the watchdog during flash erase? You can service the watchdog during wait for erase finished when your watchdog is enabled.


Oh I see, you must be using an interrupt callback when the erase is complete? I'm just using a while loop waiting for the FSR to be not busy.
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User21081
Level 1
Level 1
Darren Galpin wrote:
The erase times are given in the data flash erase time per sector in https://www.infineon.com/dgdl/Infineon-TC29xBC-DataSheet-v01_00-EN.pdf?fileId=5546d462694c98b4016953....

The time of course depends on the frequency, but I make one sector being 2.3 ms or so, which should be well within your watchdog limitl

Thanks for pointing this out. For data flash the equation is 0.12 + 0.08/(fFSI [MHz]), the return value is in seconds. So basically it should not be less than 120ms from what I'm seeing. But this helps justify what I'm seeing a lot because I thought it should have been much less than this.
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User21081
Level 1
Level 1
jaltice wrote:
Oh I see, you must be using an interrupt callback when the erase is complete? I'm just using a while loop waiting for the FSR to be not busy.


Nevermind, I can service the watchdog inside the while loop is what I think you are saying. Thanks
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TBencher
Level 5
Level 5
First like given 50 sign-ins 10 solutions authored
Hi jaltice,

did you finally solve your problem?


Regards,

Jens
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