M4A5-96/48-10VC Equivalent & Substitute Parts

Part Overview

The M4A5-96/48-10VC is a Complex Programmable Logic Device (CPLD) from Lattice Semiconductor Corporation's ispMACH® 4A series. This device features 96 macrocells, 48 I/O pins, and a maximum propagation delay of 10 ns in a 100-pin LQFP surface mount package. The product is currently obsolete, making identification of functionally compatible alternatives essential for ongoing system support, design updates, and component procurement.

Substiute Parts

M4A5-96/48-10VC

Lattice Semiconductor CorporationIn Stock: 1060M4A5-96/48-10VC Datasheet

Current PartRFQ

ATF1504AS-7AX100

Microchip TechnologyIn Stock: 1170ATF1504AS-7AX100 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the M4A5-96/48-10VC is determined by the following critical parameters:

Package Compatibility: Both the main part and substitute must use the 100-pin LQFP/TQFP surface mount package to ensure PCB footprint compatibility.

Voltage Supply Range: The internal supply voltage must remain within 4.75V ~ 5.25V to maintain electrical compatibility with existing power distribution networks.

Programmable Type: In-system programmability is required to support field programming and reconfiguration workflows.

Operating Temperature Range: The substitute must support the 0°C ~ 70°C operating temperature specification.

I/O Pin Count: The substitute must provide sufficient I/O pins to accommodate the original design's signal routing requirements.

Macrocell Count: The substitute must provide adequate logic resources to implement the original design's combinatorial and sequential logic functions.

The ATF1504AS-7AX100 from Microchip Technology meets these substitution criteria while offering improved performance characteristics and active product status.

Parameter Comparison

Engineering Selection Recommendations

The ATF1504AS-7AX100 is an active product with ROHS3 compliance, addressing the obsolescence and regulatory limitations of the M4A5-96/48-10VC. The substitute provides improved propagation delay performance (7.5 ns versus 10 ns) and increased I/O pin availability (64 versus 48), supporting enhanced design flexibility.

The ATF1504AS-7AX100 contains 64 macrocells compared to the original 96 macrocells. Design verification is required to confirm that the target application's logic requirements can be implemented within the reduced macrocell count. Both devices maintain identical voltage supply ranges, operating temperature specifications, and in-system programmability, ensuring compatibility with existing power management and programming infrastructure.

Frequently Asked Questions (FAQ)

Q: Can the ATF1504AS-7AX100 directly replace the M4A5-96/48-10VC without PCB modifications?

A: Both devices use 100-pin surface mount packages (LQFP and TQFP respectively). Physical footprint compatibility exists, but pin assignment verification is required. The ATF1504AS-7AX100 provides 64 I/O pins versus 48 on the original device, offering additional signal routing options.

Q: What is the impact of the reduced macrocell count (64 versus 96)?

A: The substitute device contains 32 fewer macrocells. Design implementation must be verified to confirm that all combinatorial and sequential logic functions fit within the available resources. Logic optimization or design partitioning may be necessary.

Q: Are the voltage supply requirements identical?

A: Both devices operate within the 4.75V ~ 5.25V internal supply voltage range, maintaining compatibility with existing power distribution networks.

Q: What are the programming compatibility considerations?

A: Both devices support in-system programmability. Device-specific programming algorithms and fuse configurations differ between manufacturers. Programming tools and design files must be updated to target the ATF1504AS-7AX100 architecture.

Q: Does the improved propagation delay (7.5 ns versus 10 ns) provide design benefits?

A: The ATF1504AS-7AX100 offers faster logic propagation, potentially enabling higher system clock frequencies or reducing timing margin requirements. Existing designs may operate without modification, with improved timing performance as a secondary benefit.

Q: What is the significance of ROHS3 compliance on the substitute part?

A: The ATF1504AS-7AX100 meets ROHS3 environmental and material restrictions, supporting compliance with current regulatory requirements. The original M4A5-96/48-10VC is RoHS non-compliant, which may restrict use in regulated applications or procurement environments.