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NAND/NOR Flash
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SDRAM and DDR Memory
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TCP/IP stack
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USB Device/Host Libraries
14. Code Read Protection (CRP) in LPC Devices
WARNING: Code Read Protection (CRP) in LPC Devices
NXP LPC MCUs can use CRP to protect your Intellectual Property (IP) when it is in the MCUs memory. If you wish to use
CRP, please refer to NXP's application notes, User's Manuals, or the community forums.
CRP is controlled by values written into specific memory locations of the MCU. When CRP is not used the CRP memory
locations are all 0xFF's (not protected). All FDI projects are written utilizing no CRP.
Memory section .crp1 and when needed .crp2 are each setup with 4 bytes, initialized to 0xFFFFFFFF (no CRP). We do not
recommend changing the memory sections in our product demos as they are set up for the available memory of the
uEZGUI. As an example, please review the Memory Usage Map and Memory placement section in uEZGUI-4357-
50WVN.c.
Important Note – You should take particular care when modifying the value placed in the CRP word, as some CRP
settings can disable some or all means of access to your MCU (including debug). Before making use of CRP, you are
strongly advised to read NXP's documentation on this functionality. You can access the documentation for your MCU at
Microcontrollers and Processors |NXP
See "LPC Code Read Protection Readme.pdf" for important details and examples.
15. Configuring Micro SD Card for High Clock Frequency
The LPC4357 can run the High-Speed SD Card Interface at a much higher speed, and the software is configured by
default to do so. The cards should be of good quality and have at least a class 10 rating. Below are some examples of
cards that FDI has tested and qualified.
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SanDisk Industrial 8GB+ U1 rated microSDHC
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Kingston SDC10G2/16GBSP
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Kingston SDCA10/16GBSP
Note: At this time this uEZGUI does NOT support full-size SD cards rated for only 25MHz mode. All SDA compliant
microSD cards should be compatible with the current fixed-speed implementation.
3/27/2024
µ E Z G U I U s e r ' s M a n u a l
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Copyright ©2024, Future Designs, Inc.
Mass Storage Devices
LCD Displays with Touch Screen
Input / Output Devices
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Revision 1.4
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