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Zakładka z wyszukiwarką danych komponentów |
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Zakładka z wyszukiwarką danych komponentów |
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AM29PDL640G Arkusz danych(PDF) 17 Page - Advanced Micro Devices |
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AM29PDL640G Arkusz danych(HTML) 17 Page - Advanced Micro Devices |
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17 / 61 page  December 13, 2005 Am29PDL640G 15 D A TA SH EE T Table 5. Bank Address Table 6. SecSi TM Sector Addresses 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 equip- ment to automatically match a device to be pro- gramm ed with its correspond ing program min g algorithm. However, the autoselect codes can also be accessed in-system through the command register. When using programming equipment, the autoselect mode requires V ID on address pin A9. Address pins must be as shown in Table 7. In addition, when verify- ing sector protection, the sector address must appear on the appropriate highest order address bits (see Table 4). Table 7 shows the remaining address bits that are don’t care. When all necessary bits have been set as required, the programming equipment may then read the corresponding identifier code on DQ7–DQ0. However, the autoselect codes can also be accessed in-system through the command register, for instances when the device is erased or programmed in a system without access to high voltage on the A9 pin. The com- mand sequence is illustrated in Table 14. Note that if a Bank Address (BA) on address bits A21, A20, and A19 is asserted during the third write cycle of the autose- lect command, the host system can read autoselect data that bank and then immediately read array data from the other bank, without exiting the autoselect mode. To access the autoselect codes in-system, the host system can issue the autoselect command via the command register, as shown in Table 14. This method does not require V ID. Refer to the Autoselect Com- mand Sequence section for more information. SA119 1110000xxx 32 380000h–387FFFh SA120 1110001xxx 32 388000h–38FFFFh SA121 1110010xxx 32 390000h–397FFFh SA122 1110011xxx 32 398000h–39FFFFh SA123 1110100xxx 32 3A0000h–3A7FFFh SA124 1110101xxx 32 3A8000h–3AFFFFh SA125 1110110xxx 32 3B0000h–3B7FFFh SA126 1110111xxx 32 3B8000h–3BFFFFh SA127 1111000xxx 32 3C0000h–3C7FFFh SA128 1111001xxx 32 3C8000h–3CFFFFh SA129 1111010xxx 32 3D0000h–3D7FFFh SA130 1111011xxx 32 3D8000h–3DFFFFh SA131 1111100xxx 32 3E0000h–3E7FFFh SA132 1111101xxx 32 3E8000h–3EFFFFh SA133 1111110xxx 32 3F0000h–3F7FFFh SA134 1111111000 4 3F8000h–3F8FFFh SA135 1111111001 4 3F9000h–3F9FFFh SA136 1111111010 4 3FA000h–3FAFFFh SA137 1111111011 4 3FB000h–3FBFFFh SA138 1111111100 4 3FC000h–3FCFFFh SA139 1111111101 4 3FD000h–3FDFFFh SA140 1111111110 4 3FE000h–3FEFFFh SA141 1111111111 4 3FF000h–3FFFFFh Bank A21–A19 A000 B 001, 010, 011 C 100, 101, 110 D111 Device Sector Size Address Range Am29PDL640G 128 words 00000h–0007Fh Table 4. Am29PDL640G Sector Architecture Bank Sector Sector Address A21–A12 Sector Size (Kwords) Address Range |
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