Discussion Overview
The discussion revolves around understanding the data retention specifications of EEPROM ICs, specifically the 28C16 model, in the context of replacing a Dallas Memory Module in older CPU circuits and two-way radios. Participants explore the implications of data retention limits and the reliability of different EEPROM vendors.
Discussion Character
- Technical explanation
- Debate/contested
- Experimental/applied
Main Points Raised
- Andrew questions the meaning of the 10-year data retention specification for the 28C16 EEPROM and its implications for replacing a Dallas Memory Module that relies on an internal battery.
- One participant asserts that after 10 years, the data is likely to be lost, while suggesting checking other vendors for longer retention claims, such as Thomson SGS's assertion of 40 years.
- Another participant clarifies that the EEPROM replacement is for a two-way radio, emphasizing the importance of data retention for maintaining functionality in older equipment.
- A participant explains the mechanism of data retention in EEPROMs, noting that charge leakage can lead to data loss, influenced by environmental factors like heat and radiation.
- Andrew mentions finding an EEPROM with a 100-year data retention specification as a suitable replacement for the Dallas Memory Module.
Areas of Agreement / Disagreement
Participants express differing views on the reliability and longevity of EEPROMs compared to Dallas Memory Modules, with some advocating for longer retention options while others highlight the inherent limitations of EEPROM technology.
Contextual Notes
There are unresolved assumptions regarding the specific conditions under which the data retention specifications apply, as well as the potential impact of environmental factors on EEPROM performance.
Who May Find This Useful
Individuals interested in retrofitting older electronic devices, particularly those involved in amateur radio or maintaining legacy computer systems, may find this discussion relevant.