PC28F512P33EFA Equivalent & Substitute Parts

Part Overview

The PC28F512P33EFA is a 512Mbit parallel NOR Flash memory IC manufactured by Micron Technology Inc., designed for non-volatile storage applications requiring parallel interface connectivity. This component features a 64-EasyBGA (8x10) package with 52 MHz clock frequency and 95 ns access time, operating across a 2.3V to 3.6V supply range.

The PC28F512P33EFA is classified as obsolete. Locating equivalent or substitute components is necessary to support legacy system maintenance, design updates, or when original inventory becomes unavailable. Substitute parts must maintain functional compatibility across memory capacity, interface type, electrical specifications, and thermal operating range.

Key Parameters

Parameter	Value
Memory Size	512Mbit
Memory Format	FLASH
Technology	FLASH - NOR
Memory Organization	32M x 16
Memory Interface	Parallel
Clock Frequency	52 MHz
Access Time	95 ns
Write Cycle Time	95 ns
Voltage Supply Range	2.3V ~ 3.6V
Operating Temperature	-40°C ~ 85°C
Package Type	64-TBGA
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
MSL Rating	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution of the PC28F512P33EFA is determined by the following critical parameters:

Memory Capacity & Organization: The substitute must provide 512Mbit total capacity with compatible memory organization (32M x 16 or 64M x 8 configurations are functionally equivalent for parallel interface applications).

Technology & Interface: Both the main part and substitute must use FLASH - NOR technology with parallel memory interface to ensure pin-level and protocol compatibility.

Electrical Specifications: The substitute must support the operating voltage range and access time requirements. Supply voltage compatibility (2.3V ~ 3.6V minimum overlap) and access time (95 ns or faster) are mandatory for functional equivalence.

Thermal Range: Operating temperature range of -40°C ~ 85°C must be maintained.

Package Compatibility: While the main part uses 64-EasyBGA (8x10) and the substitute uses 64-LBGA (11x13), both are 64-pin BGA packages with surface mount technology. Physical footprint differences require PCB layout verification.

Compliance: RoHS3 compliance and MSL rating (3, 168 Hours) must be maintained.

The MT28EW512ABA1HPC-0SIT meets all substitution criteria as an active product from the same manufacturer with verified compatibility.

Parameter Comparison

Parameter	PC28F512P33EFA	MT28EW512ABA1HPC-0SIT	Compatibility
Memory Size	512Mbit	512Mbit	Match
Memory Format	FLASH	FLASH	Match
Technology	FLASH - NOR	FLASH - NOR	Match
Memory Organization	32M x 16	64M x 8, 32M x 16	Compatible
Memory Interface	Parallel	Parallel	Match
Access Time	95 ns	95 ns	Match
Write Cycle Time	95 ns	60 ns	Compatible (faster)
Voltage Supply Range	2.3V ~ 3.6V	2.7V ~ 3.6V	Overlapping (2.7V ~ 3.6V)
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	Match
Package Type	64-TBGA	64-LBGA	Different footprint
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Match
MSL Rating	3 (168 Hours)	3 (168 Hours)	Match
Product Status	Obsolete	Active	Substitute is current

Engineering Selection Recommendations

The MT28EW512ABA1HPC-0SIT is the qualified substitute for the PC28F512P33EFA based on the following factors:

Product Status: The substitute is an active product from Micron Technology Inc., ensuring ongoing availability and supply chain support compared to the obsolete main part.

Compliance Alignment: Both components maintain ROHS3 compliance and identical MSL ratings, satisfying regulatory and manufacturing process requirements.

Electrical Compatibility: The substitute operates within the overlapping voltage range (2.7V ~ 3.6V) and matches the 95 ns access time specification. The improved write cycle time (60 ns versus 95 ns) provides performance enhancement without compatibility risk.

Memory Specifications: Identical 512Mbit capacity and parallel NOR Flash technology ensure functional equivalence. The substitute supports both 64M x 8 and 32M x 16 memory organization, accommodating the main part's 32M x 16 configuration.

Package Consideration: The substitute uses a 64-LBGA (11x13) package versus the main part's 64-EasyBGA (8x10). Both are 64-pin BGA surface mount packages. PCB layout redesign is required to accommodate the different footprint dimensions.

Frequently Asked Questions (FAQ)

Q: Can the MT28EW512ABA1HPC-0SIT directly replace the PC28F512P33EFA without PCB modifications?

A: No. While both components are 64-pin BGA packages, the EasyBGA (8x10) and LBGA (11x13) footprints differ in physical dimensions and ball pitch. PCB layout redesign is necessary to accommodate the substitute package.

Q: Are the memory organizations compatible between these parts?

A: Yes. The PC28F512P33EFA uses 32M x 16 organization, and the MT28EW512ABA1HPC-0SIT supports both 64M x 8 and 32M x 16 configurations. The 32M x 16 mode ensures functional equivalence.

Q: What is the voltage compatibility between these components?

A: The PC28F512P33EFA operates at 2.3V ~ 3.6V, while the MT28EW512ABA1HPC-0SIT operates at 2.7V ~ 3.6V. The overlapping range is 2.7V ~ 3.6V. Systems designed for the lower 2.3V ~ 2.7V range require verification before substitution.

Q: Does the faster write cycle time of the substitute affect compatibility?

A: No. The MT28EW512ABA1HPC-0SIT's 60 ns write cycle time is faster than the main part's 95 ns specification. Faster write performance does not create compatibility issues in systems designed for the original 95 ns timing.

Q: Are both components RoHS compliant?

A: Yes. Both the PC28F512P33EFA and MT28EW512ABA1HPC-0SIT are ROHS3 compliant with identical MSL ratings of 3 (168 Hours).

Q: Why is the main part obsolete while the substitute is active?

A: The PC28F512P33EFA represents an earlier generation of Micron's parallel NOR Flash portfolio. The MT28EW512ABA1HPC-0SIT is the current production equivalent, offering the same core functionality with improved manufacturing support and supply availability.

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