[Solved] Troubleshooting select EEPROM configuration!

[AkibUddin]

Richmeter RM219 has P24C02A eeprom, so if i use 24c02 eeprom then have any problem ? P24C02A bidirectional data transfer speed 1mhz & 400khz other side 24c02 eeprom has 400khz & 100khz .. 

[coromonadalix]

your thread is confusing and i would say  not indicative

are you talking about  eeprom wear and tear,  read and write cycles,   life expectancy before failures, data corruption  ?

[wraper]

Both are "24C02" which is a generalization. Second one not being specific about what it actually is, there are a ton of different 24C02. Generally all 24C02 are mostly compatible but there may be differences which can be an issue in some cases. The issues may be with operating voltage range, presence of adress pins (if not all of them are connected to GND), maximum clock frequency if a high clock speed is used in particular device. Also they may have different maximum page write size. Generally all of that is not an issue, however device may be deing something out of particular IC spec.
As of max I2C speed, it's very unlikely this meter uses over 400kHz.

[AkibUddin]

your thread is confusing and i would say  not indicative

are you talking about  eeprom wear and tear,  read and write cycles,   life expectancy before failures, data corruption  ?

confusing about eeprom selection when original get corrupted

[AkibUddin]

Both are "24C02" which is a generalization. Second one not being specific about what it actually is, there are a ton of different 24C02. Generally all 24C02 are mostly compatible but there may be differences which can be an issue in some cases. The issues may be with operating voltage range, presence of adress pins (if not all of them are connected to GND), maximum clock frequency if a high clock speed is used in particular device. Also they may have different maximum page write size. Generally all of that is not an issue, however device may be deing something out of particular IC spec.
As of max I2C speed, it's very unlikely this meter uses over 400kHz.

You got the issue 

[AkibUddin]

Here still using 2 different  type eeprom in same multimeter 24c02a has 1M to 400k Other hand 24c02n has 400k to 100K bidirectional data transfer speed. Booth still working [Solved] Aneng M118A

[wraper]

Nope, all of them have speed range starting from basically 0 Hz. Initial I2C standard allowed maximum of 100kHz, later standards increased it to 400kHz and 1MHz. Mentioning higher clock figures means that chip adheres to later standard.