23AA04M-I/SN

Memory IC Overview

The Microchip Technology 23AA04M-I/SN is a 4-Mbit Serial SRAM device organized as 256 k x 8 bits. It operates within a supply voltage range of 1.7V to 3.6V and supports an industrial temperature range from -40°C to +85°C. The component utilizes a Serial Peripheral Interface (SPI) compatible bus with separate data in and out lines, while also supporting Serial Dual Interface (SDI) and Serial Quad Interface (SQI) modes for enhanced throughput. Maximum clock frequencies reach 143 MHz for high-speed operations. The device features unlimited read/write cycles and includes built-in Error Correction Code (ECC) logic.

Memory IC Feature Summary

• Supports SPI, SDI, and SQI serial interface architectures for flexible communication speeds
• Includes built-in Error Correction Code (ECC) logic for superior data reliability
• Enables unlimited read and write cycles without degradation
• Allows user-selectable page sizes of 32 bytes or 256 bytes

Memory IC Applications

• Data logging applications requiring non-volatile-like retention with battery backup
• Real-time control systems needing fast random access memory
• Sensor interfaces utilizing serial communication protocols
• Embedded systems requiring low-power static RAM solutions

Memory IC Procurement Notes

Verify the specific suffix 'I/SN' corresponds to the Industrial temperature grade (-40°C to +85°C) and SOIC-8 package. Confirm that the 23AA04M variant does not include the VBAT pin functionality found in the 23LCV04M version, as this affects external circuit design for power loss protection. Ensure compatibility with host controller voltage levels within the 1.7V to 3.6V operating range.

Memory IC Selection Notes

Select this component when a 4-Mbit capacity is required with high-speed serial access capabilities up to 143 MHz. Choose the 23AA04M over the 23LCV04M if external battery backup hardware is not utilized, as it lacks the dedicated VBAT pin. Consider the SOIC-8 package constraints for PCB layout. Verify that the host system supports the desired interface mode (SPI, SDI, or SQI) to leverage the device's performance characteristics effectively.

Memory IC Part Context

This part belongs to the 23XX04M family of 4-Mbit Serial SRAM devices manufactured by Microchip Technology. It shares architectural similarities with the 23LCV04M but differs in voltage range and battery backup support. The series is designed for applications demanding high-speed data storage with minimal pin count, leveraging standard serial protocols for integration into compact embedded designs.

Memory IC Replacement Considerations

The 23LCV04M-I/SN is a functional substitute within the same family, though it requires a 14-lead package and supports external battery backup via a VBAT pin. Direct pin-to-pin replacement is not possible due to the package difference. Other 4-Mbit serial SRAMs may require significant schematic and firmware modifications.