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AM29BDD160G Datasheet(PDF) 47 Page - Advanced Micro Devices |
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AM29BDD160G Datasheet(HTML) 47 Page - Advanced Micro Devices |
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47 / 80 page  Am29BDD160G 45 5. No unlock or command cycles required when bank is reading array data. 6. The Reset command is required to return to the read mode (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). 7. The fourth cycle of the autoselect command sequence is a read cycle. The system must provide the bank address to obtain the manufacturer ID or device ID information. See the Autoselect Command section for more information. 8. This command cannot be executed until The Unlock Bypass command must be executed before writing this command sequence. The Unlock Bypass Reset command must be executed to return to normal operation. 9. This command is ignored during any embedded program, erase or suspended operation. 10. Valid read operations include asynchronous and burst read mode operations. 11. The device ID must be read across the fourth, fifth, and sixth cycles. 00h in the sixth cycle indicates top boot block, 01h indicates bottom boot block. 12. The system may read and program in non-erasing sectors, or enter the autoselect mode, when in the Program/Erase Suspend mode. The Program/Erase Suspend command is valid only during a sector erase operation, and requires the bank address. 13. The Program/Erase Resume command is valid only during the Erase Suspend mode, and requires the bank address. 14. Command is valid when device is ready to read array data or when device is in autoselect mode. 15. Asynchronous read operations. 16. ACC must be at VID during the entire operation of this command. 17. Command is ignored during any Embedded Program, Embedded Erase, or Suspend operation. 18. The Unlock Bypass Entry command is required prior to any Unlock Bypass operation. The Unlock Bypass Reset command is required to return to the read mode. Table 20. Sector Protection Command Definitions (x32 Mode) (Sheet 1 of 2) Command (Notes) Cycles Bus Cycles (Notes 1-4) First Second Third Fourth Fifth Sixth Addr Data Addr Data Addr Data Addr Data Addr Data Addr Data Reset 1 XXX F0 SecSi Sector Entry 3 555 AA 2AA 55 555 88 SecSi Sector Exit 4 555 AA 2AA 55 555 90 XX 00 SecSi Protection Bit Program (5, 6) 6 555 AA 2AA 55 555 60 OW 68 OW 48 OW RD(0) SecSi Protection Bit Status 6 555 AA 2AA 55 555 60 OW RD(0) Password Program (5, 7, 8) 4 555 AA 2AA 55 555 38 PWA[0- 1] PWD[0- 1] Password Verify 4 555 AA 2AA 55 555 C8 PWA[0- 1] PWD[0- 1] Password Unlock (7, 8) 5 555 AA 2AA 55 555 28 PWA[0- 1] PWD[0- 1] PPB Program (5, 6) 6 555 AA 2AA 55 555 60 (SA)WP 68 (SA)WP 48 (SA)WP RD(0) All PPB Erase (5, 9, 10) 6 555 AA 2AA 55 555 60 WP 60 (SA)WP 40 (SA)WP RD(0) PPB Status (11, 12) 4 555 AA 2AA 55 555 90 (SA)X02 00/01 PPB Lock Bit Set 3 555 AA 2AA 55 555 78 PPB Lock Bit Status 4 555 AA 2AA 55 (BA) 555 58 SA RD(1) DYB Write (7) 4 555 AA 2AA 55 555 48 SA X1 DYB Erase (7) 4 555 AA 2AA 55 555 48 SA X0 |
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