LC5512MB-45F256C Equivalent & Substitute Parts

Part Overview

The LC5512MB-45F256C is a Complex Programmable Logic Device (CPLD) from Lattice Semiconductor Corporation's ispXPLD® 5000MB series. This device integrates 512 macrocells with 193 I/O pins in a 256-pin BGA package, delivering 4.5 ns propagation delay for embedded logic applications. The product is classified as obsolete, necessitating identification of functionally compatible alternatives for ongoing design support and procurement.

Substiute Parts

LC5512MB-45F256C

Lattice Semiconductor CorporationIn Stock: 2333LC5512MB-45F256C Datasheet

Current PartRFQ

LCMXO2-1200UHC-6FTG256I

Lattice Semiconductor CorporationIn Stock: 1141LCMXO2-1200UHC-6FTG256I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LC5512MB-45F256C is determined by the following critical parameters:

Package Compatibility: Both the main part and substitute must utilize 256-pin BGA packaging in 17x17 form factor to ensure PCB footprint compatibility and mechanical fit.

I/O Pin Count: The substitute must provide a minimum of 193 I/O pins to maintain signal routing capability equivalent to the original design.

Logic Capacity: The substitute must offer sufficient logic elements or macrocells to accommodate the functional requirements of designs originally targeting the LC5512MB-45F256C.

Voltage Supply Range: The substitute must operate within or encompass the 2.3V to 2.7V internal supply voltage specification to ensure compatibility with existing power distribution networks.

Operating Temperature Range: The substitute must support the 0°C to 90°C operating temperature specification or provide an extended range that includes this window.

Programmability: The substitute must support in-system programmability to maintain design flexibility and field reconfiguration capability.

The LCMXO2-1200UHC-6FTG256I meets these substitution criteria as a functionally equivalent alternative from the same manufacturer.

Parameter Comparison

Engineering Selection Recommendations

The LCMXO2-1200UHC-6FTG256I is the designated substitute for the obsolete LC5512MB-45F256C based on the following engineering criteria:

Product Status Alignment: The substitute is classified as active, ensuring continued availability, technical support, and manufacturing continuity. The original part's obsolete status creates supply chain risk that the active substitute mitigates.

Compliance Enhancement: The substitute achieves ROHS3 compliance, addressing environmental and regulatory requirements that the non-compliant original part does not meet. This is particularly relevant for designs targeting markets with RoHS mandates.

Functional Superiority: The substitute provides 206 I/O pins versus the original 193, and 1280 logic elements versus 512 macrocells, delivering increased design flexibility without requiring PCB redesign due to identical 256-pin BGA packaging.

Thermal and Voltage Margin: The substitute's extended operating temperature range (-40°C to 100°C) and broader supply voltage window (2.375V to 3.465V) accommodate a wider range of system operating conditions compared to the original specification.

Package Mechanical Compatibility: Both devices utilize identical 256-pin BGA form factors in 17x17 configuration, enabling direct PCB footprint compatibility.

Frequently Asked Questions (FAQ)

Q: Can the LCMXO2-1200UHC-6FTG256I be used as a direct replacement for the LC5512MB-45F256C?

A: Yes, the LCMXO2-1200UHC-6FTG256I is mechanically and functionally compatible as a substitute. Both devices share the same 256-pin BGA (17x17) package footprint, support in-system programmability, and provide equivalent or superior I/O and logic capacity. Design validation is required to confirm functional equivalence for specific applications.

Q: What are the key differences between these two parts?

A: The primary differences are product status (obsolete versus active), logic capacity (512 macrocells versus 1280 logic elements), I/O count (193 versus 206 pins), RoHS compliance (non-compliant versus ROHS3 compliant), and operating specifications (0°C to 90°C versus -40°C to 100°C). The substitute offers enhanced capabilities and regulatory compliance.

Q: Are there any voltage supply compatibility concerns?

A: The original part operates at 2.3V to 2.7V internal supply, while the substitute operates at 2.375V to 3.465V. The substitute's range overlaps with the original specification but extends to higher voltages. Existing power distribution networks designed for the original part must be verified to ensure compatibility with the substitute's voltage requirements.

Q: Does the package change affect PCB layout?

A: No. Both the LC5512MB-45F256C and LCMXO2-1200UHC-6FTG256I utilize identical 256-pin BGA packaging in 17x17 form factor. PCB footprints, via patterns, and mechanical mounting are directly compatible.

Q: What is the impact of the increased I/O count?

A: The substitute provides 206 I/O pins compared to the original 193 pins. This additional I/O capacity does not create compatibility issues; unused pins can remain unconnected. The increased I/O provides design flexibility for future enhancements or alternative signal routing configurations.

Q: Is design re-qualification necessary when switching to the substitute?

A: Functional validation is required to confirm that the substitute meets the specific design requirements of applications originally targeting the LC5512MB-45F256C. While mechanical and electrical compatibility is established, design-specific testing ensures performance equivalence.