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DS28E01-100 Datasheet(PDF) 4 Page - Maxim Integrated Products |
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DS28E01-100 Datasheet(HTML) 4 Page - Maxim Integrated Products |
4 / 20 page 1Kb Protected 1-Wire EEPROM with SHA-1 Engine 4 _______________________________________________________________________________________ ABRIDGED DATA SHEET Note 17: ε in Figure 12 represents the time required for the pullup circuitry to pull the voltage on IO up from VIL to VTH. The actual maximum duration for the master to pull the line low is tW1LMAX + tF - ε and tW0LMAX + tF - ε, respectively. Note 18: δ in Figure 12 represents the time required for the pullup circuitry to pull the voltage on IO up from VIL to the input-high threshold of the bus master. The actual maximum duration for the master to pull the line low is tRLMAX + tF. Note 19: Current drawn from IO during the EEPROM programming interval or SHA-1 computation. Note 20: Note 21: Write-cycle endurance is degraded as TA increases. Note 22: Not 100% production tested; guaranteed by reliability monitor sampling. Note 23: Data retention is degraded as TA increases. Note 24: Guaranteed by 100% production test at elevated temperature for a shorter time; equivalence of this production test to the data sheet limit at operating temperature range is established by reliability testing. Note 25: EEPROM writes can become nonfunctional after the data-retention time is exceeded. Long-term storage at elevated tem- peratures is not recommended; the device can lose its write capability after 10 years at +125°C or 40 years at +85°C. Note 26: COMPARISON TABLE LEGACY VALUES DS28E01-100 VALUES STANDARD SPEED (μs) OVERDRIVE SPEED (μs) STANDARD SPEED (μs) OVERDRIVE SPEED (μs) PARAMETER MIN MAX MIN MAX MIN MAX MIN MAX tSLOT (including tREC) 61 (undefined) 7 (undefined) 65* (undefined) 8* (undefined) tRSTL 480 (undefined) 48 80 480 640 48 80 tPDH 15 60 2 6 15 60 2 6 tPDL 60 240 8 24 60 240 8 24 tW0L 60 120 6 16 60 120 6 15.5 * Intentional change; longer recovery time requirement due to modified 1-Wire front-end. Note: Numbers in bold are not in compliance with legacy 1-Wire product standards. ELECTRICAL CHARACTERISTICS (continued) (TA = -40°C to +85°C.) (Note 1) Refer to the full data sheet for this note. Refer to the full data sheet for this note. |
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