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Unlock Renesas R5F21236KFP Microcontroller Flash MOT Program and extract embedded firmware from MCU memory, through reverse engineering Microcontroller to locate the security fuse bit.

1. VCC = 2.7 to 5.5 V at Topr = -40 to 85°C (J version) / -40 to 125°C (K version), unless otherwise specified.
2. Definition of programming/erasure endurance

The programming and erasure endurance is defined on a per-block basis. If the programming and erasure endurance is n (n = 10,000), each block can be erased n times.

For example, if 1,024 1-byte writes are performed to different addresses in block A, a 1 Kbyte block, and then the block is erased, the programming/erasure endurance still stands at one. However, the same address must not be programmed more than once per erase operation when unlocking renesas microcontroller r5f21134 flash program (overwriting prohibited).

MInimum endurance to guarantee all electrical characteristics after program and erase (1 to Min. value can be guaranteed).

Standard of block A and block B when program and erase endurance exceeds 1,000 times. Byte program time to 1,000 times are the same as that in program ROM.

In a system that executes multiple programming operations, the actual erasure endurance can be reduced by writing to sequential addresses in turn so that as much of the block as possible is used up before performing an erase operation.

For example, when programming groups of 16 bytes, the effective number of rewrites can be minimized by programming up to 128 groups before erasing them all in one operation.

In addition, averaging the erasure endurance between blocks A and B can further reduce the actual erasure endurance. It is also advisable to retain data on the erasure endurance of each block and limit the number of erase operations to a certain number.

If error occurs during block erase, attempt to execute the clear status register command, then the block erase command at least three times until the erase error does not occur.

Customers desiring program/erase failure rate information should contact their Renesas technical support representative.

125°C for K version. The data hold time includes time that the power supply is off or the clock is not supplied.