23LCV512T-I/ST

Memory IC Overview

The Microchip Technology 23LCV512T-I/ST is a 512-Kbit Serial SRAM device housed in an 8-lead TSSOP package. It features a SPI-compatible bus interface with support for SDI (Serial Dual Interface) mode, operating at clock rates up to 20 MHz. The memory organization is 64K x 8 bits. It supports a supply voltage range of 2.5V to 5.5V and operates within an industrial temperature range of -40°C to +85°C. Key electrical characteristics include a read current of 3 mA at 5.5V and 20 MHz, and a standby current of 4 µA at +85°C.

Memory IC Feature Summary

• Supports external battery backup via VBAT pin to maintain data when VCC falls below the trip point.
• Enables unlimited read and write cycles without write time delays.
• Offers flexible access modes including Byte, Page, and Sequential operations.
• Compatible with standard SPI protocols and enhanced Serial Dual Interface (SDI) for higher data throughput.

Memory IC Applications

• Data logging systems requiring non-volatile-like retention through battery backup.
• Microcontroller-based embedded systems needing fast random access memory.
• Industrial control applications operating within extended temperature ranges.
• Battery-powered devices utilizing low-power standby modes.

Memory IC Procurement Notes

Verify that the specific suffix 'T' corresponds to the tape and reel packaging variant required for automated assembly processes. Confirm the 'I' designation aligns with the necessary industrial temperature specifications (-40°C to +85°C). Ensure the host system supports the 2.5V to 5.5V supply voltage range and interfaces correctly with the 8-TSSOP footprint dimensions.

Memory IC Selection Notes

Select this component when high-speed serial access is required alongside data retention capabilities during power loss. It is suitable for designs where limited I/O pins are available due to its serial interface nature. Consider the SDI mode if increased bandwidth is needed compared to standard SPI. Ensure the application can accommodate the external battery connection on the VBAT pin if data retention across power cycles is critical.

Memory IC Part Context

This part belongs to the 23LCV512 family of serial SRAMs manufactured by Microchip Technology. It shares functional similarities with other members like the 23LC1024 but offers half the storage capacity. The 'T' suffix indicates a specific packaging format distinct from tube or cut tape variants found in other SKUs within the same product line.

Memory IC Replacement Considerations

Public confirmed substitute part numbers: 23LCV512-I/SN, 23LCV512-I/P.

Memory IC FAQ

How does the device handle data retention when main power is lost?

The device maintains SRAM contents via an internal switch that automatically transfers operation to the external backup supply connected to the VBAT pin when VCC drops below the trip point.

What is the difference between SPI and SDI modes?

SPI mode uses separate input and output lines, while SDI mode allows two bits to be entered per clock cycle using shared SIO0 and SIO1 pins, effectively doubling the data rate.