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NXP Microcontroller P89LPC906 Flash Program Breaking also including read out the serial number which is embedded in the microcontroller, device has the option of storing a 31-byte serial number along with the length of the serial number (for a total of 32 bytes) in a non-volatile memory space.

When ISP mode is entered, the serial number length is evaluated to determine if the serial number is in use. If the length of the serial number is programmed to either 00H or FFH, the serial number is considered not in use.

NXP Microcontroller P89LPC906 Flash Program Breaking

If the serial number is in use, reading, programming, or erasing of the user code memory or the serial number is blocked until the user transmits a ‘verify serial number’ record containing a serial number and length that matches the serial number and length previously stored in the device to execute the NXP Microcontroller P87LPC769 Internal Flash cracking.

The user can reset the serial number to all zeros and set the length to zero by sending the ‘reset serial number’ record. In addition, the ‘reset serial number’ record will also erase all user code when NXP Microcontroller P89LPC906 Flash Program Breaking.

Several In-Application Programming (IAP) calls are available for use by an application program to permit selective erasing, MCU reading and programming of Flash sectors, security bit, configuration bytes, and device id. All calls are made through a common interface, PGM_MTP. The programming functions are selected by setting up the microcontroller’s registers before making a call to PGM_MTP at 1FF0H. The IAP calls are shown in below Table:

IAP Calls of P89LPC906 MCU