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MBM29LV004BC-90PNS Datasheet(PDF) 11 Page - Fujitsu Component Limited. |
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MBM29LV004BC-90PNS Datasheet(HTML) 11 Page - Fujitsu Component Limited. |
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11 / 52 page  11 MBM29LV004TC-70/-90/-12/MBM29LV004BC-70/-90/-12 The manufacturer and device codes may also be read via the command register, for instances when the MBM29LV004TC/BC are erased or programmed in a system without access to high voltage on the A9 pin. The command sequence is illustrated in Table 6. (Refer to Autoselect Command section.) Byte 0 (A0 = VIL) represents the manufacturer’s code (Fujitsu = 04H) and (A0 = VIH) represents the device identifier code (MBM29LV004TC = B5H and MBM29LV004BC = B6H). These two bytes/words are given in the tables 3.1 and 3.2. All identifiers for manufactures and device will exhibit odd parity with DQ7 defined as the parity bit. In order to read the proper device codes when executing the autoselect, A1 must be VIL. (See Tables 3.1 and 3.2.) * : Outputs 01H at protected sector addresses and outputs 00H at unprotected sector addresses. Table 3 .1 MBM29LV004TC/004BC Sector Protection Verify Autoselect Codes Type A13 to A18 A10 A6 A1 A0 Code (HEX) Manufacture’s Code X VIL VIL VIL VIL 04H Device Code MBM29LV004TC X VIL VIL VIL VIH B5H MBM29LV004BC X VIL VIL VIL VIH B6H Sector Protection Sector Addresses VIL VIL VIH VIL 01H* Table 3 .2 Expanded Autoselect Code Table Type Code DQ7 DQ6 DQ5 DQ4 DQ3 DQ2 DQ1 DQ0 Manufacture’s Code 04H 00000100 Device Code MBM29LV004TC B5H 1 0110101 MBM29LV004BC B6H 1 0110110 Sector Protection 01H 0 0 0 0 0 0 0 1 |
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