MFPROT_LP datasheet(30/35 Pages) RFSOLUTIONS

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ib technology

Access Bits

Access condition for:

Application

C1 C2 C3

Read

Write

Increment

Decrement,

Transfer,

Restore

keyA|B

(Transport setting)

keyA|B

never

keyA|B

(value block)

keyA|B

never

(read/write block)

keyB

never

(read/write block)

keyA|B

keyB

never

(read/write block)

keyB

never

(read/write block)

keyA|B

keyB

keyA|B

(value block)

never

(read/write block)

Combining the transport (default) access conditions for the data areas and the sector trailer

block, the typical setting is:

Sector Trailer Block

Byte:

9 10

11 12

0xA0 A1 A2 A3 A4 A5 FF 07 80 69 B0 B1 B2 B3 B4 B5

The default access bits (0xFF 07 80 69) define that KeyA must used for all operations and

KeyA can never be read, so in the previous example bytes 0 – 5 (keyA) would always read as

zeros.

KeyA (6 bytes)

Access Bits

KeyB (6 bytes)

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