23LCV1024-E/P Equivalent & Substitute Parts

Part Overview

The 23LCV1024-E/P is a 1Mbit SRAM memory IC with SPI Dual I/O interface manufactured by Microchip Technology. This device operates at 20 MHz clock frequency with a supply voltage range of 2.5V to 5.5V and is housed in an 8-PDIP package. The product is currently classified as obsolete, necessitating identification of active equivalent alternatives for new designs and ongoing production requirements.

Substiute Parts

23LCV1024-E/P

Microchip TechnologyIn Stock: 74723LCV1024-E/P Datasheet

Current PartRFQ

23A1024-E/P

Microchip TechnologyIn Stock: 100523A1024-E/P Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 23LCV1024-E/P is determined by the following critical parameters:

• Memory capacity (1Mbit) and organization (128K x 8)
• Package type and form factor (8-DIP through-hole)
• Operating temperature range (-40°C ~ 125°C)
• SPI interface compatibility
• RoHS3 compliance and regulatory certifications

The 23A1024-E/P qualifies as a substitute based on matching memory capacity, organization, package type, mounting method, temperature range, and compliance certifications. However, the substitute part implements SPI Quad I/O interface instead of Dual I/O, operates at 16 MHz instead of 20 MHz, and requires a lower supply voltage range of 1.7V to 2.2V compared to the original 2.5V to 5.5V specification.

Parameter Comparison

Engineering Selection Recommendations

The 23A1024-E/P is an active product from Microchip Technology and maintains full compliance with ROHS3 and REACH regulatory requirements. Selection of this substitute requires design consideration of three key differences:

1. Supply voltage compatibility: The substitute operates at 1.7V to 2.2V, which is incompatible with designs requiring the original 2.5V to 5.5V range. Voltage regulation or redesign may be necessary.

2. Clock frequency: The substitute operates at 16 MHz versus the original 20 MHz. System timing requirements must accommodate this reduced frequency.

3. SPI interface mode: The substitute implements Quad I/O instead of Dual I/O, requiring firmware or protocol adjustments if the original Dual I/O mode is essential to system operation.

The substitute maintains identical memory capacity, organization, package footprint, and thermal operating range, supporting direct mechanical and thermal compatibility in through-hole applications.

Frequently Asked Questions (FAQ)

Q: Can the 23A1024-E/P be used as a direct pin-for-pin replacement?

A: The 23A1024-E/P shares the same 8-DIP package and pinout, enabling direct mechanical and electrical connection. However, supply voltage requirements differ significantly (1.7V–2.2V versus 2.5V–5.5V), necessitating circuit redesign or voltage regulation modifications.

Q: What is the impact of the reduced clock frequency on system performance?

A: The substitute operates at 16 MHz compared to the original 20 MHz. Applications with timing-critical operations must be evaluated to ensure 16 MHz operation meets performance requirements.

Q: Are there compatibility issues with the SPI interface change from Dual I/O to Quad I/O?

A: The Quad I/O interface is backward compatible with Dual I/O operation in most SPI controllers, but firmware configuration may be required to enable or disable Quad mode functionality depending on system design.

Q: Is the 23A1024-E/P suitable for new designs?

A: Yes. The 23A1024-E/P is an active product with ROHS3 and REACH compliance, making it suitable for new production designs provided supply voltage, clock frequency, and interface requirements are compatible with system specifications.

Q: What are the packaging and inventory considerations?

A: The 23LCV1024-E/P is obsolete with 731 units in stock. The 23A1024-E/P is active with 955 units available in tube packaging, supporting both replacement and new production requirements.