Question: The ISSP vectors shown in AN2026 is a long sequence of 1's and 0's. I would like to create arrays of hex numbers from this sequence. How do I do this?

Answer:

The following procedure may be used to convert a vector to hex value. First split each vector into 22bit sequences. Then pad each sequence with 2 zeros in the beginning. This will make the length of the sequence to be 3 bytes. Then split this into 3 hex values. For example, following is the first 22 bits of the Initialize-1 vector.

1100101000000000000000

Add 2 zeros in the beginning

001100101000000000000000

Now split this into 3 bytes

00110010, 10000000, 00000000

32H, 80H, 00H

For the programming vectors, please refer to the application notes AN2026A or AN2026B.

The following app note implements an ISSP programmer using a PSoC.

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