M4A3-64/32-10VC Equivalent & Substitute Parts

Part Overview

The M4A3-64/32-10VC is a Complex Programmable Logic Device (CPLD) from Lattice Semiconductor Corporation's ispMACH® 4A series. This device features 64 macrocells, 32 I/O pins, and a maximum propagation delay of 10 ns in a 44-TQFP surface mount package. The product is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support, design updates, and production continuity.

Substiute Parts

M4A3-64/32-10VC

Lattice Semiconductor CorporationIn Stock: 9873M4A3-64/32-10VC Datasheet

Current PartRFQ

ATF1504ASV-15AU44

Microchip TechnologyIn Stock: 1889ATF1504ASV-15AU44 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the M4A3-64/32-10VC is determined by the following critical parameters:

• Macrocell Count: 64 macrocells (functional logic capacity)
• I/O Pin Count: 32 I/O pins (interface capability)
• Package Type: 44-TQFP (10x10) surface mount (physical and electrical compatibility)
• Voltage Supply: 3V ~ 3.6V (power supply compatibility)
• Programmable Type: In System Programmable (field programming capability)
• Propagation Delay: Maximum 10 ns (timing performance requirement)

The ATF1504ASV-15AU44 from Microchip Technology meets the core functional requirements of macrocell count, I/O pin count, package type, voltage supply range, and programmable capability. While the maximum propagation delay is 15 ns (compared to 10 ns for the original part), this represents a relaxed timing specification suitable for applications where the original 10 ns specification is not a hard constraint.

Parameter Comparison

Engineering Selection Recommendations

The ATF1504ASV-15AU44 is the primary substitute for the M4A3-64/32-10VC based on the following factors:

Functional Equivalence: Both devices share identical macrocell count (64), I/O pin count (32), package type (44-TQFP), voltage supply range (3V ~ 3.6V), and in-system programmability. The physical footprint and pinout are compatible.

Product Status: The M4A3-64/32-10VC is obsolete, while the ATF1504ASV-15AU44 is active and in production. This ensures long-term availability and supply chain continuity.

Compliance Status: The ATF1504ASV-15AU44 is ROHS3 compliant, whereas the M4A3-64/32-10VC is RoHS non-compliant. For applications subject to RoHS regulations, the substitute part satisfies current environmental compliance requirements.

Operating Temperature Range: The ATF1504ASV-15AU44 supports an extended operating temperature range (-40°C ~ 85°C) compared to the original part (0°C ~ 70°C), providing greater flexibility for diverse application environments.

Timing Specification: The substitute part has a maximum propagation delay of 15 ns versus 10 ns for the original. Design validation is required to confirm that the relaxed timing specification does not impact system performance.

Frequently Asked Questions (FAQ)

Q: Can the ATF1504ASV-15AU44 be used as a direct replacement for the M4A3-64/32-10VC?

A: The ATF1504ASV-15AU44 is functionally equivalent in terms of macrocell count, I/O pin count, package type, and voltage supply. However, the propagation delay specification is 15 ns instead of 10 ns. Verify that your application timing requirements can accommodate this difference before substitution.

Q: Are the pinouts identical between these two devices?

A: Both devices use the 44-TQFP (10x10) package. Confirm pinout compatibility with the respective device datasheets, as pin assignments may differ between manufacturers.

Q: What is the impact of the 5 ns difference in propagation delay?

A: The 5 ns difference affects maximum operating frequency and signal propagation timing. Applications with critical timing constraints must validate that system performance remains acceptable with the 15 ns specification.

Q: Is the ATF1504ASV-15AU44 available in the same packaging format?

A: Yes, both devices are supplied in 44-TQFP surface mount packages. The ATF1504ASV-15AU44 is supplied in Tray packaging.

Q: Does the extended operating temperature range of the ATF1504ASV-15AU44 affect compatibility?

A: The extended range (-40°C ~ 85°C versus 0°C ~ 70°C) is a superset of the original specification and does not create compatibility issues. Applications operating within the original temperature range will function correctly.

Q: What are the programming cycle specifications for the substitute part?

A: The ATF1504ASV-15AU44 supports a minimum of 10,000 program/erase cycles, confirming in-system programmability for field updates and reconfiguration.