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AM6421: Phenomenon of General OTP Write Operations

Part Number: AM6421


Tool/software:

​Phenomenon Description​

During read/write testing of the OTP region using the SDK example project mcu_plus_sdk_am64x_11_00_00_15\examples\otp\ext_otp, the following behavior was observed: immediately after the first write operation, the readback data does not match the written value. However, after a power cycle, the read value correctly reflects the previously written data.

In summary, the write operation appears to take effect only after a power-down and power-up sequence. Is this behavior expected?