Multi-partition based MCU chip information protection method and device
An information protection and chip technology, applied in the direction of program/content distribution protection, computer security device, internal/peripheral computer component protection, etc., can solve problems such as inability to prevent mutual theft and inability to satisfy
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[0050] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0051] An information protection scheme of an MCU chip according to an embodiment of the present invention is introduced below.
[0052] The read protection level of the flash memory controller is controlled by several control bits in the information area of the flash memory. The read protection level of the flash memory controller is divided into three levels, and the characteristics of each level are as follows:
[0053] Zero-level read protection: The user area of the flash memory is completely open and can be read, written and erased arbitrarily. The flash information area is also completely open.
[0054] Level-1 read protection: booting from the flash user area can normally access the flash user area; other boot method...
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