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ATF22V10CQZ-20XI Datasheet(PDF) 6 Page - ATMEL Corporation |
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ATF22V10CQZ-20XI Datasheet(HTML) 6 Page - ATMEL Corporation |
6 / 19 page 6 0778L–PLD–8/10 Atmel ATF22V10C(Q)Z 5. Electronic Signature Word There are 64-bits of programmable memory that are always available to the user, even if the device is secured. These bits can be used for user-specific data. 6. Security Fuse Usage A single fuse is provided to prevent unauthorized copying of the Atmel® ATF22V10CZ/CQZ fuse patterns. Once programmed, fuse verify and preload are inhibited. However, the 64-bit User Signature remains accessible. The security fuse should be programmed last, as its effect is immediate. 7. Programming/Erasing Programming/erasing is performed using standard PLD programmers. See CMOS PLD Programming Hardware and Software Support for information on software/programming. Figure 7-1. Programming/Erasing Timing Table 7-1. Programming/Erasing Parameter Description Typ Max Units T PR Power-up Reset Time 600 1000 ns V RST Power-up Reset Voltage 3.8 4.5 V C LOCK VRST POWER REGISTERED OUTPUTS tS t PR t W |
Similar Part No. - ATF22V10CQZ-20XI |
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