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29F004B-55 Datasheet(PDF) 7 Page - Macronix International |
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29F004B-55 Datasheet(HTML) 7 Page - Macronix International |
7 / 39 page 7 MX29F004T/B P/N:PM0554 REV. 1.9, OCT. 19, 2004 Mode Pins CE OE WE A0 A1 A6 A9 Q0 ~ Q7 Read Silicon ID L L H L L X V ID(2) C2H Manufacturer Code (1) Read Silicon ID L L H H L X V ID(2) 45H/46H Device Code (1) Read L L H A0 A1 A6 A9 D OUT Standby H X X X X X X HIGH Z Output Disable L H H X X X X HIGH Z Write L H L A0 A1 A6 A9 D IN(3) Chip Protect with 12V L V ID(2) L X X L V ID(2) X system (6) Chip Unprotect with 12V L V ID(2) L X X H V ID(2) X system (6) Verify Chip Protect L L H X H X V ID(2) Code (5) with 12V system Chip Protect without 12V L H L X X L H X system (6) Chip Unprotect without 12V L H L X X H H X system (6) Verify Chip Protect/Unprotect L L H X H X H Code (5) without 12V system (7) Reset X X X X X X X HIGH Z TABLE 2. MX29F004T/B BUS OPERATION NOTES: 1. Manufacturer and device codes may also be accessed via a command register write sequence. Refer to Table 1. 2. VID is the Silicon-ID-Read high voltage, 11.5V to 12.5V. 3. Refer to Table 1 for valid Data-In during a write operation. 4. X can be VIL or VIH. 5. Code=00H means unprotected. Code=01H means protected. 6. Refer to chip protect/unprotect algorithm and waveform. Must issue "unlock for chip protect/unprotect" command before "chip protect/unprotect without 12V system" command. 7. The "verify chip protect/unprotect without 12V system" is only following "Chip protect/unprotect without 12V system" command. |
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