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AM41DL1624DB45IS Datasheet(PDF) 31 Page - Advanced Micro Devices |
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AM41DL1624DB45IS Datasheet(HTML) 31 Page - Advanced Micro Devices |
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31 / 63 page  30 Am41DL16x4D P R E L IMINARY Table 16. Command Definitions (Flash 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#f pulse, whichever happens later. PD = Data to be programmed at location PA. Data latches on the rising edge of WE# or CE#f pulse, whichever happens first. SADD = Address of the sector to be verified (in autoselect mode) or erased. Address bits A19–A12 uniquely select any sector. BA = Address of the bank that is being switched to autoselect mode, is in bypass mode, or is being erased. 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 DQ15–DQ8 are don’t care in command sequences, except for RD and PD. 5. Unless otherwise noted, address bits A19–A11 are don’t cares. 6. No unlock or command cycles required when bank is in read mode. 7. The Reset command is required to return to reading array data (or to the erase-suspend-read mode if previously in Erase Suspend) when a bank is in the autoselect mode, or if DQ5 goes high (while the bank is providing status information). 8. The fourth cycle of the autoselect command sequence is a read cycle. The system must provide the bank address to obtain the manufacturer ID, device ID, or SecSi Sector factory protect information. See the Autoselect Command Sequence section for more information. 9. The data is 80h for factory locked and 00h for not factory locked. 10. The data is 00h for an unprotected sector/sector block and 01h for a protected sector/sector block. 11. The Unlock Bypass command is required prior to the Unlock Bypass Program command. 12. The Unlock Bypass Reset command is required to return to reading array data when the bank is in the unlock bypass mode. 13. 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, and requires the bank address. 14. The Erase Resume command is valid only during the Erase Suspend mode, and requires the bank address. 15. Command is valid when device is ready to read array data or when device is in autoselect mode. Table 17. Autoselect Device IDs (Word Mode) T = Top Boot Sector, B = Bottom Boot Sector 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 4 555 AA 2AA 55 (BA)555 90 (BA)X00 0001 Device ID 4 555 AA 2AA 55 (BA)555 90 (BA)X01 see Table 17 SecSi Sector Factory Protect (Note 9) 4 555 AA 2AA 55 (BA)555 90 (BA)X03 0081/0001 Sector Protect Verify (Note 10) 4 555 AA 2AA 55 (BA)555 90 (SA)X02 0000/0001 Enter SecSi Sector Region 3 555 AA 2AA 55 555 88 Exit SecSi Sector Region 4 555 AA 2AA 55 555 90 XXX 00 Program 4 555 AA 2AA 55 555 A0 PA PD Unlock Bypass 3 555 AA 2AA 55 555 20 Unlock Bypass Program (Note 11) 2 XXX A0 PA PD Unlock Bypass Reset (Note 12) 2 BA 90 XXX 00 Chip Erase 6 555 AA 2AA 55 555 80 555 AA 2AA 55 555 10 Sector Erase 6 555 AA 2AA 55 555 80 555 AA 2AA 55 SADD 30 Erase Suspend (Note 13) 1 BA B0 Erase Resume (Note 14) 1 BA 30 CFI Query (Note 15) 1 55 98 Device Autoselect Device ID Am29DL161D 2236h (T), 2239h (B) Am29DL162D 222Dh (T), 222Eh (B) Am29DL163D 2228h (T), 222Bh (B) Am29DL164D 2233h (T), 2235h (B) |
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