23LCV02M-I/ST

Memory IC Overview

The Microchip Technology 23LCV02M-I/ST is a 2-Mbit (256 k x 8) serial static random-access memory device housed in a 14-lead TSSOP package. It operates within a voltage range of 2.2 V to 3.6 V and supports an industrial temperature range of -40°C to +85°C. The device features SPI, SDI, and SQI interfaces with a maximum clock frequency of 143 MHz. Key specifications include a standby current of 70 µA typical at 25°C, unlimited read/write cycles, and built-in error correction code logic for enhanced reliability.

Memory IC Feature Summary

• Supports external battery backup via the VBAT pin to maintain data when VCC falls below the trip point.
• Includes built-in Error Correction Code (ECC) logic to ensure superior data reliability during read operations.
• Offers flexible page size configuration allowing selection between 32 bytes or 256 bytes per page.
• Provides multiple interface modes including SPI, Serial Dual Interface (SDI), and Serial Quad Interface (SQI).

Memory IC Applications

• Embedded systems requiring non-volatile data retention through external battery support
• Industrial control applications operating within the specified industrial temperature range
• High-speed data logging where unlimited write cycles are required
• Memory expansion for microcontrollers utilizing SPI, SDI, or SQI protocols

Memory IC Procurement Notes

Verify that the specific part number corresponds to the 23LCV02M variant, which requires a minimum supply voltage of 2.2 V, distinct from the 23AA02M. Confirm the suffix indicates the Industrial temperature grade (-40°C to +85°C) and the ST package type (TSSOP-14). Ensure the design accounts for the VBAT pin connection if battery backup functionality is intended, as this distinguishes it from standard SRAM variants.

Memory IC Selection Notes

Select this component when a 2-Mbit capacity is needed with support for high-speed serial interfaces up to 143 MHz. It is suitable for designs requiring unlimited write endurance and data retention via an external battery connected to the VBAT pin. Choose this over the 23AA02M if the system voltage does not drop below 2.2 V, as the 23LCV02M offers specific battery backup integration features not present in the AA series.

Memory IC Part Context

This device belongs to the 23XX02M family of 2-Mbit serial SRAMs manufactured by Microchip Technology. It shares architectural similarities with the 23AA02M but differs in voltage requirements and battery backup capabilities. The family supports byte, page, and sequential access modes across SPI, SDI, and SQI interfaces, providing versatile connectivity options for various embedded memory applications.

Memory IC Replacement Considerations

The 23AA02M-I/ST is a related variant within the same family but lacks the VBAT pin and operates down to 1.7 V. Direct substitution requires verifying that the lower voltage threshold of the AA series is acceptable and that the battery backup feature is not utilized in the target application.