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PA7540

PA7540 PEEL Array™ Programmable Electrically Erasable Logic Array

Anachip Corporation 

waste. Programming of PEEL™ Arrays is supported by

many popular third party programmers.

Design Security and Signature Word

The PEEL™ Arrays provide a special EEPROM security bit

that prevents unauthorized reading or copying of designs.

Once set, the programmed bits of the PEEL™ Arrays

cannot be accessed until the entire chip has been

electrically erased. Another programming feature,

signature word, allows a user-definable code to be

programmed into the PEEL™ Array. The code can be read

back even after the security bit has been set. The signature

word can be used to identify the pattern programmed in the

device or to record the design revision.

Figure 12 - WinPLACE LCC and IOC screen

Figure 11 - WinPLACE Architectural Editor for

PA7540

Figure 13 - WinPLACE waveform and

simulator screen

5

04-02-051B

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