23LCV512T-E/ST Equivalent & Substitute Parts

Part Overview

The 23LCV512T-E/ST is a 512Kbit Synchronous SRAM memory IC manufactured by Microchip Technology, featuring SPI Dual I/O interface with 20 MHz clock frequency. This component is packaged in 8-TSSOP surface mount configuration and operates across a supply voltage range of 2.5V to 5.5V with temperature range of -40°C to 125°C.

The 23LCV512T-E/ST has reached obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for systems utilizing this memory IC.

Substiute Parts

23LCV512T-E/ST

Microchip TechnologyIn Stock: 114223LCV512T-E/ST Datasheet

Current PartRFQ

23A512T-E/ST

Microchip TechnologyIn Stock: 92523A512T-E/ST Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 23LCV512T-E/ST is determined by the following critical parameters:

• Memory capacity: 512Kbit (64K x 8 organization)
• Package type: 8-TSSOP surface mount configuration
• Operating temperature range: -40°C to 125°C
• RoHS3 compliance status
• Volatile SRAM memory type

The 23A512T-E/ST qualifies as a substitute based on matching memory capacity, memory organization, package type, operating temperature range, and RoHS3 compliance. Differences in memory interface specification (SPI Quad I/O versus SPI Dual I/O) and clock frequency represent functional variations within the same product category that do not preclude substitution when system requirements permit.

Parameter Comparison

Engineering Selection Recommendations

The 23A512T-E/ST is an active product from Microchip Technology and represents the primary substitute for the obsolete 23LCV512T-E/ST. Both components maintain ROHS3 compliance and identical moisture sensitivity ratings, supporting equivalent environmental and regulatory requirements.

Selection of the 23A512T-E/ST requires verification that system design accommodates the following parameter differences:

• Supply voltage range: 23A512T-E/ST operates at 1.7V ~ 2.2V versus 2.5V ~ 5.5V for the original part
• Clock frequency: 23A512T-E/ST operates at 16 MHz versus 20 MHz for the original part
• Memory interface: 23A512T-E/ST provides SPI Quad I/O versus SPI Dual I/O for the original part

The active product status of 23A512T-E/ST ensures ongoing availability and supply chain support for new production and maintenance applications.

Frequently Asked Questions (FAQ)

Q: Can the 23A512T-E/ST directly replace the 23LCV512T-E/ST in existing designs?

A: Direct replacement requires design verification. Both components share identical memory capacity (512Kbit), memory organization (64K x 8), package type (8-TSSOP), and operating temperature range. However, the 23A512T-E/ST operates at a lower supply voltage range (1.7V ~ 2.2V) and lower clock frequency (16 MHz). System power supply and timing specifications must accommodate these differences.

Q: What is the significance of the SPI Dual I/O versus SPI Quad I/O interface difference?

A: The memory interface specification determines data transfer capability and pin functionality. SPI Quad I/O provides four data lines for parallel data transfer, while SPI Dual I/O provides two data lines. Interface compatibility depends on system controller design and firmware implementation. Substitution is valid only when the system design supports the Quad I/O interface or can operate with reduced data transfer rates.

Q: Are both parts suitable for the same operating temperature applications?

A: Yes. Both the 23LCV512T-E/ST and 23A512T-E/ST operate across the identical temperature range of -40°C to 125°C, supporting equivalent thermal environment requirements.

Q: What packaging considerations apply to substitution?

A: Both components use 8-TSSOP surface mount packaging with identical physical dimensions (0.173" width, 4.40mm). PCB footprints and assembly processes remain compatible. Both components maintain MSL 1 (Unlimited) moisture sensitivity rating.

Q: Why is the 23LCV512T-E/ST listed as obsolete?

A: Obsolete product status indicates the manufacturer has discontinued production and support. The 23A512T-E/ST, as an active product, provides ongoing availability, technical support, and supply chain continuity for applications requiring 512Kbit SPI SRAM memory in 8-TSSOP packaging.