STMicroelectronics AN3171 Application Note Comparing M24C64 and M24LR64-R EEPROMs

This application note explains the differences between the M24LR64-R dual interface EEPROM and the standard M24C64-F, M24C64-R, M24C64-W EEPROMs. It provides detailed information on hardware and software considerations, as well as the memory organization and access methods of the M24LR64-R.


STMicroelectronics AN3171 Application Note Comparing M24C64 and M24LR64-R EEPROMs - cover page
Brand
STMicroelectronics
Category
Memory
Document type
Application Note
Language
English
Pages
14
File format
PDF
File size
140 KB
Published
06 August, 2012
Updated
29 September, 2023
MD5 checksum
70EA24B99418BD1BE656EC84E98ADE74

About this manual

This document compares the standard M24C64-F, M24C64-R, and M24C64-W devices with the M24LR64-R dual interface EEPROM. It highlights key differences in hardware considerations, such as pinout configurations for RF capability versus I2C bus access.

What's inside

  • Hardware considerations
  • Pinout comparison
  • Two ways of accessing the M24LR64-R
  • Software considerations
  • M24LR64-R memory organization
  • User memory seen from the I2C bus
  • System memory seen from the I2C bus
  • Revision history

Frequently asked questions

What is the main difference between M24LR64-R and M24C64 access methods?

The M24C64 can be accessed only through the I2C bus, whereas the M24LR64-R can be accessed through either the I2C bus or the RF interface.

How many devices can be used on the same I2C bus with M24LR64-R?

You will be able to use up to four M24LR64-R devices defined by E0 and E1 on the same I2C bus.

What is the page write size of the M24LR64-R?

The page size of the M24LR64-R is 4 bytes.

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