Hi All,
I am planning to use the Grand Central M4 Express board for a project. However, eventually I intend to create a custom board.
The Grand Central Board uses the AT SAMD51 P20A MCU. Would there be any functional impact if I choose the AT SAMD51 P19A MCU to design my custom board instead of AT SAMD51 P20A?
From the datasheet, I understand that the Pin multiplexing / IO configurations for both MCUs is the same for the 128-pin TQFP packages. The only difference I have observed from my study of the data sheet is the difference in memory sizes.
Flash Memory -
AT SAMD51 P20A MCU: 1024 KB
AT SAMD51 P19 A MCU: 512 KB
RAM -
AT SAMD51 P20A MCU: 256 KB
AT SAMD51 P19 A MCU: 192 KB
I understand that the reduced memory size can have an impact on the project and poses a restriction on the overall development and code size.
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Are there any additional issues with processor behavior or functional limitations that I need to anticipate if I go forward with this?
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Can I expect the SAMD51 P19A MCU to behave similar to the Grand Central board if I configure the MCU similar to the Central board?
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How much of an impact would it have on the modification of the Grand Central board software package if I require it to support my custom board?
If anyone has attempted this / anything similar previously or has any advice on the same, it would be very useful.
Thank you very much for your support.
Best Regards,
Bhindhiya