AES feature in STM32F733ZE
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‎2018-04-01 11:32 PM
I'm going to using AES feature in STM32F733ZE but the the datasheet doesn't have much information regarding AES .
Do you know how much speed of AES in the
STM32F733ZE ?
And do we have any any demonstration evaluation kit which use AES feature in STM32F733ZE ?
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‎2018-04-02 5:30 AM
Last time I looked the CRYP/HASH units were clocked at 48 MHz
You'd likely want to use the
http://www.st.com/en/evaluation-tools/stm32756g-eval.html
Cross-posting
https://community.st.com/0D50X00009Xki9WSAR
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‎2018-04-02 7:23 AM
Turvey.Clive.002
‌ : Thanks for your information. Can we calculate it base on MB/s ?- Mark as New
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‎2018-04-02 8:55 AM
Turvey.Clive.002
‌ : If i want to store the data in SD Card, so far do we have any method to estimate that speed ?- Mark as New
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‎2018-04-02 10:29 AM
One could certainly benchmark throughput in those terms, in a sustained sense the limitation is likely to be your ability to deliver data to the unit, and dispatch it some place else (network, sd card, etc..)
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‎2018-04-02 11:41 AM
These things have many variables, different makes/models vary widely in write speed. You also have to work with large blocks of data to be efficient. The ceiling for an SDCard clocked at 24 MHz in 4-bit mode is 12 MBps, 8-10 MBps being achievable with high quality cards.
The F7 has a core cycle accurate counter for benchmarking.
There would be significant time/cost in generating actual numbers from a system using AES/SDMMC concurrently.
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‎2018-04-04 1:57 AM
Turvey.Clive.002
‌ :Wheredo we know the AES clock is 48 MHz, because from the Spec of STM32733 it said that the clock is 216Mhz. Actually I don't really understand bot these clocks .Could you explain for me . Thank you very much and appreciate for ur information .
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‎2018-04-04 8:09 AM
Most STM32 use a 48 MHz clock for USB, RNG, HASH, CRYP units.
Looking over RM0431 the AES uses aes_hclk, so 216 MHz should be workable.
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