23AA04M-I/ST

Memory IC Overview

The Microchip Technology 23AA04M-I/ST is a 4-Mbit (512K x 8) low-power serial SRAM device. It operates within a supply voltage range of 1.7V to 3.6V and supports industrial temperature ranges from -40°C to +85°C. The component utilizes an SPI-compatible interface, with support for Serial Dual Interface (SDI) and Serial Quad Interface (SQI) modes to achieve high-speed data transfer rates up to 143 MHz. It features built-in Error Correction Code (ECC) logic for enhanced reliability and offers user-selectable page sizes of 32 or 256 bytes.

Memory IC Feature Summary

• Supports SPI, SDI, and SQI serial interfaces for flexible communication protocols
• Includes built-in Error Correction Code (ECC) logic to ensure data integrity
• Provides unlimited read and write cycles with zero write time
• Allows user configuration of page size between 32 and 256 bytes

Memory IC Applications

• Data logging systems requiring non-volatile-like retention via battery backup
• Industrial control applications needing high-speed serial memory access
• Embedded systems utilizing SPI-compatible microcontrollers
• Portable devices operating on low voltage power supplies

Memory IC Procurement Notes

Verify the specific suffix 'I' confirms the industrial temperature grade (-40°C to +85°C). Confirm the package type 'ST' corresponds to the 8-lead SOIC format as listed in the selection table. Ensure the ordering code matches the 23AA04M variant rather than the 23LCV04M, as the latter includes battery backup support and a different pinout. Cross-reference the datasheet revision DS20006862A for accurate electrical specifications.

Memory IC Selection Notes

Select this component when a low-power serial SRAM with high-speed SQI capability is required. Choose the 23AA04M over the 23LCV04M if external battery backup functionality is not needed, as it simplifies the design by removing the VBAT pin. Consider the 8-lead SOIC package for space-constrained PCB layouts. Ensure the host controller supports the desired interface mode (SPI, SDI, or SQI) to leverage the full performance potential of the device.

Memory IC Part Context

This part belongs to the 23XX04M family of 4-Mbit serial SRAMs manufactured by Microchip Technology. It is designed to provide fast, reliable memory storage for embedded applications. The family distinguishes itself through support for multiple serial interface modes, allowing designers to balance speed and pin count requirements effectively.

Memory IC Replacement Considerations

The 23LCV04M is a related device but includes battery backup support and requires a 14-lead package. Direct substitution is not possible without redesigning the PCB layout due to the pin count difference. Other 4-Mbit serial SRAMs may require significant interface or voltage level adjustments.