23LCV04M-I/SL

Memory IC Overview

The Microchip Technology 23LCV04M-I/SL is a 4-Mbit (512KB) low-power serial SRAM device housed in a 14-lead TSSOP package. It operates within a voltage range of 2.2V to 3.6V and supports an industrial temperature range of -40°C to +85°C. The device features SPI, SDI, and SQI interface architectures with a maximum clock frequency of 143 MHz. Key specifications include a 256 x 8-bit organization, user-selectable page sizes of 32 or 256 bytes, and built-in Error Correction Code (ECC) logic for enhanced reliability.

Memory IC Feature Summary

• Supports external battery backup via the VBAT pin for non-volatile data retention when VCC drops below the trip point.
• Features built-in Error Correction Code (ECC) logic to ensure superior data reliability during read operations.
• Enables high-speed data transfer through Serial Dual Interface (SDI) and Serial Quad Interface (SQI) modes alongside standard SPI.
• Allows flexible memory access configurations including byte, page, and sequential operation modes.

Memory IC Applications

• Embedded systems requiring persistent data storage with unlimited write cycles.
• Industrial control applications needing reliable memory in harsh temperature environments.
• Battery-powered devices utilizing external backup supplies for data preservation.
• High-performance serial communication interfaces requiring fast data rates.

Memory IC Procurement Notes

Verify that the specific ordering suffix corresponds to the 14-lead TSSOP package, as the 23LCV04M family is exclusively available in 14-lead packages unlike the 8-lead variants. Confirm the industrial temperature grade (-40°C to +85°C) matches system requirements. Ensure the design accounts for the VBAT pin connection if battery backup functionality is intended, otherwise connect it to VSS as recommended by the datasheet.

Memory IC Selection Notes

Select this component over the 23AA04M variant specifically because it includes the VBAT pin for external battery backup support. The 23LCV04M requires a minimum operating voltage of 2.2V, whereas the 23AA04M supports lower voltages down to 1.7V but lacks backup capabilities. Choose this part when non-volatile behavior via external power is required without switching to EEPROM technology.

Memory IC Part Context

This device belongs to the 23XX04M family of 4-Mbit serial SRAMs from Microchip Technology. The family distinguishes between the 23AA04M, which offers wider voltage ranges without backup, and the 23LCV04M, which provides battery backup functionality. Both share identical interface protocols and performance characteristics, differing primarily in power management features and package availability constraints.

Memory IC Replacement Considerations

The 23LCV04M-I/ST serves as a direct physical replacement offering the same electrical specifications in a 14-lead TSSOP package. The 23LCV04M-I/P is also compatible in a 14-lead PDIP package. Note that the 23AA04M series cannot replace this part if battery backup functionality is required due to the absence of the VBAT pin.