Memory iButton® Selector Table
Please review the chart below for details on the different memory iButtons® available.
Memory iButton® COMPARISON CHART |
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Model | iButton® Type | Capacity | Security | Other Features | Write Cycles | Service Life @ 25°C | Data Sheet |
DS1990A | ID Only | 64 bit ROM | Read Only | ||||
DS1990R | ID Only | 64 bit ROM | Read Only | Presence Detect | |||
DS1971 | EEPROM | 256 bits | 200,000 @ 25°C, 50,000 @ 85°C | 40 Years | |||
DS1973 | EEPROM | 4096 bits | Overdrive | 50,000 @ 25°C | Not Specified | ||
DS1977 | EEPROM | 32 KB | Password Protected | Overdrive | 100,000 | 10 Years | |
D1992L | NVRAM | 1024 bits | Unlimited | 10 Years | |||
DS1996L | NVRAM | 64K bits | Overdrive | Unlimited | 10 Years |