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AM29PL320DB60WPI 数据表(PDF) 28 Page - Advanced Micro Devices |
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AM29PL320DB60WPI 数据表(HTML) 28 Page - Advanced Micro Devices |
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28 / 49 page ![]() 26 Am29PL320D June 13, 2005 Table 14. Command Definitions (Word Mode) Legend: X = Don’t care RA = Address of the memory location to be read. RD = Data read from location RA during read operation. PA = Address of the memory location to be programmed. Addresses latch on the falling edge of the WE# or CE# pulse, whichever happens later. PD = Data to be programmed at location PA. Data latches on the rising edge of WE# or CE# pulse, whichever happens first. SA = Address of the sector to be verified (in autoselect mode) or erased. Address bits A19–A12 uniquely select any sector. Notes: 1. See Table 1 for description of bus operations. 2. All values are in hexadecimal. 3. Except for the read cycle and the fourth cycle of the autoselect command sequence, all bus cycles are write cycles. 4. Data bits DQ31–DQ8 are don’t cares for unlock and command cycles. 5. Address bits A19–A11 are don’t cares for unlock and command cycles, unless SA or PA required. 6. No unlock or command cycles required when reading array data. 7. The Reset command is required to return to reading array data when device is in the autoselect mode, or if DQ5 goes high (while the device is providing status data). 8. The fourth cycle of the autoselect command sequence is a read cycle. 9. The device ID must be read across the fourth, fifth, and sixth cycles. The sixth cycle specifies 2200h for bottom boot devices and 2201h for top boot devices. 10. The data is 80h for factory locked and 00h for not factory locked. 11. The data is 00h for an unprotected sector and 01h for a protected sector. See “Autoselect Command Sequence” for more information. 12. Command is valid when device is ready to read array data or when device is in autoselect mode. 13. The Unlock Bypass command is required prior to the Unlock Bypass Program command. 14. The Unlock Bypass Reset command is required to return to reading array data when the device is in the unlock bypass mode. 15. The system may read and program in non-erasing sectors, or enter the autoselect mode, when in the Erase Suspend mode. The Erase Suspend command is valid only during a sector erase operation. 16. The Erase Resume command is valid only during the Erase Suspend mode. Command Sequence (Note 1) Bus Cycles (Notes 2–5) First Second Third Fourth Fifth Sixth Addr Data Addr Data Addr Data Addr Data Addr Data Addr Data Read (Note 6) 1 RA RD Reset (Note 7) 1 XXX F0 Manufacturer ID 4 AAA AA 555 55 AAA 90 00 01 Device ID (Note 9) 6 AAA AA 555 55 AAA 90 02 227E 1C 2203 1E 2200 2201 SecSi ™ Sector Factory Protect (Note 10) 4 AAA AA 555 55 (BA) AAA 90 (BA) X06 (Note 10) Sector Protect Verify (Note 11) 4 AAA AA 555 55 AAA 90 (SA) X04 (Note 11) Enter SecSi Sector Region 3 AAA AA 555 55 AAA 88 Exit SecSi Sector Region 4 AAA AA 555 55 AAA 90 XXX 00 CFI Query (Note 12) 1 55 98 Program 4 AAA AA 555 55 AAA A0 PA PD Unlock Bypass 3 AAA AA 555 55 AAA 20 Unlock Bypass Program (Note 13) 2 XXX A0 PA PD Unlock Bypass Reset (Note 14) 2 XXX 90 XXX 00 Chip Erase 6 AAA AA 555 55 AAA 80 AAA AA 555 55 AAA 10 Sector Erase 6 AAA AA 555 55 AAA 80 AAA AA 555 55 SA 30 Erase Suspend (Note 15) 1 XXX B0 Erase Resume (Note 16) 1 XXX 30 Temporary Sector Unprotect Enable 4 AAA AA 555 55 AAA E0 XXX 01 Temporary Sector Unprotect Disable 4 AAA AA 555 55 AAA E0 XXX 00 |
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