PC28F512P33TFA Equivalent & Substitute Parts

Part Overview

The PC28F512P33TFA 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 PC28F512P33TFA is classified as obsolete. Locating equivalent or substitute components is necessary to support legacy system maintenance, design updates, or inventory replenishment where original stock is unavailable or depleted.

Key Parameters

Parameter	Value
Memory Size	512Mbit
Memory Format	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 (64-EasyBGA 8x10)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
MSL Rating	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution eligibility for the PC28F512P33TFA is determined by the following critical parameters:

Memory Capacity: 512Mbit (non-negotiable)
Memory Technology: FLASH - NOR (non-negotiable)
Memory Interface: Parallel (non-negotiable)
Memory Organization: 32M x 16 or compatible 64M x 8 (functionally equivalent)
Access Time: 95 ns or faster (backward compatible)
Write Cycle Time: Equal to or faster than 95 ns
Voltage Supply Range: Must encompass or be compatible with 2.3V ~ 3.6V
Operating Temperature Range: -40°C ~ 85°C (minimum requirement)
Package Compatibility: Physical and electrical compatibility with 64-pin BGA footprint
Compliance: RoHS3 and REACH compliance maintained

The MT28EW512ABA1HPC-0SIT meets these substitution criteria as a functionally equivalent component.

Parameter Comparison

Parameter	PC28F512P33TFA (Main Part)	MT28EW512ABA1HPC-0SIT (Substitute)	Compatibility
Memory Size	512Mbit	512Mbit	Identical
Memory Format	FLASH - NOR	FLASH - NOR	Identical
Memory Organization	32M x 16	64M x 8, 32M x 16	Compatible
Memory Interface	Parallel	Parallel	Identical
Access Time	95 ns	95 ns	Identical
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	Identical
Package Type	64-TBGA (8x10)	64-LBGA (11x13)	Different footprint
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Identical
MSL Rating	3 (168 Hours)	3 (168 Hours)	Identical
Product Status	Obsolete	Active	Substitute is actively manufactured

Engineering Selection Recommendations

The MT28EW512ABA1HPC-0SIT is electrically and functionally compatible with the PC28F512P33TFA for applications requiring 512Mbit parallel NOR Flash memory. Both components maintain ROHS3 compliance and identical MSL ratings.

Critical Consideration: The substitute part uses a 64-LBGA (11x13) package footprint, whereas the main part uses 64-EasyBGA (8x10). PCB layout redesign is required to accommodate the different ball grid array dimensions. Pin-to-pin electrical compatibility exists, but physical placement and routing must be re-evaluated.

The MT28EW512ABA1HPC-0SIT offers improved write cycle performance (60 ns versus 95 ns) and active product status, ensuring continued availability and manufacturing support. The voltage supply range of 2.7V ~ 3.6V is compatible with systems operating within the overlapping range; systems requiring operation below 2.7V require alternative solutions.

Frequently Asked Questions (FAQ)

Q: Can the MT28EW512ABA1HPC-0SIT be used as a direct drop-in replacement for the PC28F512P33TFA?

A: Electrical and functional compatibility exists. However, the different BGA package footprints (64-EasyBGA 8x10 versus 64-LBGA 11x13) require PCB redesign. Direct socket substitution is not possible without layout modifications.

Q: What is the primary reason for substitution?

A: The PC28F512P33TFA is obsolete. The MT28EW512ABA1HPC-0SIT is an active product from the same manufacturer with equivalent memory specifications and improved performance characteristics.

Q: Are there voltage compatibility concerns?

A: The substitute part operates at 2.7V ~ 3.6V, compared to the main part's 2.3V ~ 3.6V. Applications requiring operation below 2.7V must verify alternative solutions. The overlapping range (2.7V ~ 3.6V) supports standard 3.3V and 3.0V systems.

Q: How do the write cycle times compare?

A: The substitute part features a 60 ns write cycle time, faster than the main part's 95 ns specification. This improvement is backward compatible and does not introduce timing conflicts in systems designed for the original component.

Q: Are compliance certifications maintained?

A: Both components are ROHS3 compliant and REACH unaffected. MSL ratings are identical at Level 3 (168 Hours). Compliance documentation is maintained across the substitution.

Q: What package considerations apply?

A: The 64-LBGA (11x13) package is larger than the 64-EasyBGA (8x10). PCB space availability, thermal management, and signal routing must be re-evaluated during design transition. Ball pitch and placement differ between packages.

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