M4A5-64/32-7VC Equivalent & Substitute Parts

Part Overview

The M4A5-64/32-7VC is a Complex Programmable Logic Device (CPLD) from Lattice Semiconductor Corporation's ispMACH® 4A series. This device integrates 64 macrocells with 32 I/O pins in a 44-pin TQFP package, delivering 7.5 ns propagation delay performance. The product is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support, design updates, and production continuity.

Substiute Parts

M4A5-64/32-7VC

Lattice Semiconductor CorporationIn Stock: 816M4A5-64/32-7VC Datasheet

Current PartRFQ

ATF1504AS-7AX44

Microchip TechnologyIn Stock: 2170ATF1504AS-7AX44 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the M4A5-64/32-7VC is determined by strict equivalence across the following critical parameters:

• Macrocell Count: 64 macrocells (functional logic capacity)
• I/O Pin Count: 32 I/O pins (interface capability)
• Propagation Delay: 7.5 ns maximum (timing performance)
• Supply Voltage Range: 4.75V ~ 5.25V (power compatibility)
• Operating Temperature Range: 0°C ~ 70°C (thermal envelope)
• Package Type: 44-TQFP (10x10) (physical and electrical footprint)
• Programmable Type: In System Programmable (field reconfigurability)

The ATF1504AS-7AX44 from Microchip Technology meets all these criteria, establishing it as a direct functional equivalent. Both devices share identical electrical specifications, package geometry, and programming methodology, enabling pin-for-pin and design-level substitution.

Parameter Comparison

Engineering Selection Recommendations

The ATF1504AS-7AX44 is the direct substitute for the M4A5-64/32-7VC. Selection is based on the following factors:

Product Status: The M4A5-64/32-7VC is obsolete, while the ATF1504AS-7AX44 maintains active production status, ensuring long-term availability and supply chain reliability.

Regulatory Compliance: The ATF1504AS-7AX44 is ROHS3 compliant, whereas the M4A5-64/32-7VC is RoHS non-compliant. This distinction is significant for applications subject to environmental regulations and industry standards requiring RoHS compliance.

Electrical and Functional Equivalence: Both devices are identical in macrocell count, I/O configuration, propagation delay, supply voltage range, operating temperature, and package specification. The ATF1504AS-7AX44 supports a minimum of 10,000 program/erase cycles, meeting or exceeding typical field reconfiguration requirements.

Physical Compatibility: The 44-TQFP (10x10) package ensures mechanical and electrical pin compatibility, enabling direct PCB-level substitution without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can the ATF1504AS-7AX44 replace the M4A5-64/32-7VC in existing designs?

A: Yes. The ATF1504AS-7AX44 is electrically and functionally equivalent across all critical parameters: macrocell count, I/O pin count, propagation delay, supply voltage, operating temperature range, and package type. Pin-for-pin substitution is supported.

Q: Are there differences in programming methodology between these devices?

A: Both devices are In System Programmable (ISP). The ATF1504AS-7AX44 specifies a minimum of 10,000 program/erase cycles. Programming tools and methodologies are compatible for both devices.

Q: What is the significance of the RoHS compliance difference?

A: The M4A5-64/32-7VC is RoHS non-compliant, while the ATF1504AS-7AX44 is ROHS3 compliant. For applications subject to RoHS regulations or customer requirements, the ATF1504AS-7AX44 is the appropriate selection.

Q: Are the package dimensions identical?

A: Yes. Both devices use the 44-TQFP (10x10) package with identical pin assignments, pitch, and physical dimensions. PCB footprints are directly compatible.

Q: Why is the M4A5-64/32-7VC classified as obsolete?

A: Lattice Semiconductor has discontinued the ispMACH® 4A series. The ATF1504AS-7AX44 from Microchip Technology's ATF15xx series provides equivalent functionality with active production support.

Q: What is the Moisture Sensitivity Level (MSL) for both devices?

A: Both devices are rated MSL 3 (168 Hours), indicating identical moisture handling and storage requirements.