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AM29LV004T-150EC Datasheet(PDF) 9 Page - Advanced Micro Devices |
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AM29LV004T-150EC Datasheet(HTML) 9 Page - Advanced Micro Devices |
9 / 36 page Am29LV004 9 PR EL I M I NAR Y Table 2. Am29LV004T Top Boot Block Sector Address Table Table 3. Am29LV004B Bottom Boot Block Sector Address Table Autoselect Mode The autoselect mode provides manufacturer and de- vice identification, and sector protection verification, through identifier codes output on DQ7–DQ0. This mode is primarily intended for programming equipment to automatically match a device to be programmed with its corresponding programming algorithm. However, the autoselect codes can also be accessed in-system through the command register. When using programming equipment, the autoselect mode requires VID (11.5 V to 12.5 V) on address pin A9. Address pins A6, A1, and A0 must be as shown in Table 4. In addition, when verifying sector protection, the sec- tor address must appear on the appropriate highest order address bits (see Tables 2 and 3). Table 4 shows the remaining address bits that are don’t care. When all necessary bits have been set as required, the program- ming equipment may then read the corresponding iden- tifier code on DQ7–DQ0. To access the autoselect codes in-system, the host system can issue the autoselect command via the command register, as shown in Table 5. This method does not require VID. See “Command Definitions” for details on using the autoselect mode. Sector A18 A17 A16 A15 A14 A13 Sector Size (Kbytes) Address Range (in hexadecimal) SA0 0 0 0 X X X 64 00000h-0FFFFh SA1 0 0 1 X X X 64 10000h-1FFFFh SA2 0 1 0 X X X 64 20000h-2FFFFh SA3 0 1 1 X X X 64 30000h-3FFFFh SA4 1 0 0 X X X 64 40000h-4FFFFh SA5 1 0 1 X X X 64 50000h-5FFFFh SA6 1 1 0 X X X 64 60000h-6FFFFh SA7 1 1 1 0 X X 32 70000h-77FFFh SA8 1 1 1 1 0 0 8 78000h-79FFFh SA9 1 1 1 1 0 1 8 7A000h-7BFFFh SA10 1 1 1 1 1 X 16 7C000h-7FFFFh Sector A18 A17 A16 A15 A14 A13 Sector Size (Kbytes) Address Range (in hexadecimal) SA0 0 0 0 0 0 X 16 00000h-03FFFh SA1 0 0 0 0 1 0 8 04000h-05FFFh SA2 0 0 0 0 1 1 8 06000h-07FFFh SA3 0 0 0 1 X X 32 08000h-0FFFFh SA4 0 0 1 X X X 64 10000h-1FFFFh SA5 0 1 0 X X X 64 20000h-2FFFFh SA6 0 1 1 X X X 64 30000h-3FFFFh SA7 1 0 0 X X X 64 40000h-4FFFFh SA8 1 0 1 X X X 64 50000h-5FFFFh SA9 1 1 0 X X X 64 60000h-6FFFFh SA10 1 1 1 X X X 64 70000h-7FFFFh |
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