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DS28E02P+ Datasheet(PDF) 8 Page - Maxim Integrated Products |
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DS28E02P+ Datasheet(HTML) 8 Page - Maxim Integrated Products |
8 / 21 page 1-Wire SHA-1 Authenticated 1Kb EEPROM with 1.8V Operation 8 _______________________________________________________________________________________ ABRIDGED DATA SHEET Figure 6. Memory Protection Matrix Address Registers and Transfer Status The DS28E02 employs three address registers: TA1, TA2, and E/S (Figure 7). These registers are common to many other 1-Wire devices, but operate slightly differ- ently with the DS28E02. Registers TA1 and TA2 must be loaded with the target address to which the data is writ- ten or from which data is read. Register E/S is a read- only transfer-status register used to verify data integrity with write commands. Since the scratchpad of the DS28E02 is designed to accept data in blocks of 8 bytes only, the lower 3 bits of TA1 are forced to 0 and BIT # 7 6 5 4 3 2 1 0 TARGET ADDRESS (TA1) T7 T6 T5 T4 T3 T2 (0) T1 (0) T0 (0) TARGET ADDRESS (TA2) T15 T14 T13 T12 T11 T10 T9 T8 ENDING ADDRESS WITH DATA STATUS (E/S) (READ ONLY) AA 1 PF 1 1 E2 (1) E1 (1) E0 (1) Figure 7. Address Registers Refer to the full data sheet. |
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