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When decipher an IC, burnout the lead pin is one of the most difficult way to prevent
it the firmware inside the IC being deciphered, and there is totally three ways for
burnout the lead pin:
For 51 series microcontroller, Such as AT89C51 from ATMEL, the most effective way to
prevent chip decipher is burnout the data bus’s lead pin;
When it comes to ***R chip decipher, nowadays ***R IC are all support ISP inte***ce
online program model, and under this model, data input circuit (MOSI), and data
output circuit (MISO), reset circuit (RST) and clock circuit (SCK) are all
indispensable. Burnout anyone of these circuits will greatly increase the complexity
of IC decipher.
Regarding PIC chip, the general series can use ultraviolet radiation to remove the
protection and decipher IC, but once the data circuit and clock circuit (especially
data circuit) being burnout, the complexity level will increase dramatically.
When decipher an IC, burnout the lead pin is one of the most difficult way to prevent
it the firmware inside the IC being deciphered, and there is totally three ways for
burnout the lead pin:
For 51 series microcontroller, Such as AT89C51 from ATMEL, the most effective way to
prevent chip decipher is burnout the data bus’s lead pin;
When it comes to ***R chip decipher, nowadays ***R IC are all support ISP inte***ce
online program model, and under this model, data input circuit (MOSI), and data
output circuit (MISO), reset circuit (RST) and clock circuit (SCK) are all
indispensable. Burnout anyone of these circuits will greatly increase the complexity
of IC decipher.
Regarding PIC chip, the general series can use ultraviolet radiation to remove the
protection and decipher IC, but once the data circuit and clock circuit (especially
data circuit) being burnout, the complexity level will increase dramatically.