23AA04M-I/P

Memory IC Overview

The Microchip Technology 23AA04M-I/P is a 4-Mbit (512-Kbyte) low-power serial SRAM device organized as 256K x 8 bits. It operates within a supply voltage range of 1.7V to 3.6V and supports an industrial temperature range of -40°C to +85°C. The device features a Serial Peripheral Interface (SPI) compatible architecture, with support for Serial Dual Interface (SDI) and Serial Quad Interface (SQI) modes to enable higher data throughput. Maximum clock frequencies reach 40 MHz for standard read operations and up to 143 MHz for high-speed reads and writes. It includes built-in Error Correction Code (ECC) logic for data integrity and offers user-selectable page sizes of 32 or 256 bytes.

Memory IC Feature Summary

• Supports SPI, SDI, and SQI serial interface architectures for flexible communication speeds
• Includes built-in Error Correction Code (ECC) logic to ensure superior data reliability
• Provides unlimited read and write cycles with zero write time characteristics
• Features user-configurable page sizes and multiple operational modes including byte, page, and sequential access

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 for code or data storage
• 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 'P' suffix corresponds to the 8-lead PDIP package type. Ensure the design requires the 23AA04M variant without external battery backup support, distinct from the 23LCV04M which includes VBAT functionality. Cross-reference the datasheet DS20006862 for exact pinout and electrical limits.

Memory IC Selection Notes

Select this component when a 4-Mbit capacity is required with SPI compatibility. Choose the 23AA04M over the 23LCV04M if external battery backup is not needed, as it supports a lower minimum voltage of 1.7V. Consider the PDIP package only if through-hole mounting is necessary; otherwise, SOIC or TSSOP options are available. Ensure the host controller supports the desired interface mode (SPI, SDI, or SQI) to leverage the full performance capabilities.

Memory IC Part Context

The 23AA04M is part of the 23XX04M family of 4-Mbit serial SRAMs manufactured by Microchip Technology. This family shares identical functional specifications but differs in voltage ranges and battery backup features. The 23AA04M specifically targets applications requiring wide voltage operation down to 1.7V without the complexity of an external backup supply, distinguishing it from the 23LCV04M variant.

Memory IC Replacement Considerations

The 23LCV04M is a functional substitute within the same family but requires a minimum voltage of 2.2V and includes a VBAT pin for external battery backup. Verify that the application does not require the 1.7V lower limit provided by the 23AA04M before substituting.