Break IC, Recover MCU, Microcontroller Reverse Engineering

Posts Tagged ‘read fpga ic flash eeprom’

Read FPGA IC Chip Software Code from FPGA controller program memory and data memory, decapsulate FPGA processor’s protection and cut off the security fuse bit through MCU cracking invasive method and extract code out from FPGA MCU memory;

Read FPGA IC Chip Software Code from FPGA controller program memory and data memory, decapsulate FPGA processor’s protection and cut off the security fuse bit through MCU cracking invasive method and extract code out from FPGA MCU memory

At the same time the memory analysis and extraction is complicated by the fact that the difference in threshold voltages between the memory cells is larger than within the cell itself. The practical way to avoid this problem is to use the same cell as a reference and compare the measured threshold level with itself after the extra erase operation is applied to the chip. Very similar results were received for the EEPROM data memory inside the same PIC16F84A chip. The only difference was that the threshold voltage after ten erase cycles was very close to that of the fully erased cell, thus making it almost impossible to recover the information if the erase operation was applied more than ten times.