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Microchip Microcontroller PIC16F1458 Program Memory Breaking can readout the firmware out from MCU PIC16F1458 directly through disable its security fuse bit and change the protective status, content inside Microprocessor’s program memory can be recovered.

The Load Configuration command is used to access the configuration memory (user ID locations, Configuration Words, Calibration Words). The Load Configuration command sets the address to 8000h and loads the data latches with one word of data. After issuing the Load Configuration command, use the Increment Address command until the proper address to be programmed is reached. The address is then pro- grammed by issuing either the Begin Internally Timed Programming or Begin Externally Timed Programming command.

The only way to get back to the program memory (address 0) is to exit Program/Verify mode or issue the Reset Address command after the configuration memory has been accessed by the Load Configuration command.

The Load Data for Program Memory command is used to load one 14-bit word into the data latches. The word programs into program memory after the Begin Internally Timed Programming or Begin Externally Timed Programming command is issued.

The Read Data from Program Memory command will transmit data bits out of the program memory map currently accessed, starting with the second rising edge of the clock input. The ICSPDAT pin will go into Output mode on the first falling clock edge, and it will revert to Input mode (high-impedance) after the 16th falling edge of the clock. If the program memory is code-protected (CP), the data will be read as zeros.