PC28F512P33BFD Equivalent & Substitute Parts

Part Overview

The PC28F512P33BFD is a 512Mbit parallel NOR Flash memory IC manufactured by Micron Technology Inc., designed for non-volatile storage applications requiring high-density memory in a compact form factor. The device operates at 52 MHz with 95 ns access time and is housed in a 64-EasyBGA (8x10) package. This part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Key Parameters

Parameter	Value
Manufacturer	Micron Technology Inc.
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)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the PC28F512P33BFD is determined by the following critical parameters:

Memory capacity: 512Mbit minimum
Memory technology: FLASH - NOR parallel interface
Memory organization: 32M x 16 or compatible 64M x 8 configuration
Access time: 95 ns or faster
Voltage supply compatibility: Overlapping operating range
Operating temperature range: -40°C to 85°C minimum
Package compatibility: Surface mount BGA with equivalent pin count and signal mapping
Compliance: RoHS3 and REACH status alignment

The MT28EW512ABA1LPC-0SIT qualifies as a direct substitute based on matching memory capacity, technology, access time, temperature range, and compliance certifications. While the package footprint differs (64-LBGA 11x13 versus 64-EasyBGA 8x10), both are 64-pin BGA packages with compatible signal assignments for parallel NOR Flash applications.

Parameter Comparison

Parameter	PC28F512P33BFD	MT28EW512ABA1LPC-0SIT	Compatibility
Memory Size	512Mbit	512Mbit	Match
Memory Format	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 (EasyBGA 8x10)	64-LBGA (11x13)	Different footprint, same pin count
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Match
MSL Rating	3 (168 Hours)	3 (168 Hours)	Match
Product Status	Obsolete	Active	Substitute is active

Engineering Selection Recommendations

The MT28EW512ABA1LPC-0SIT is the qualified substitute for PC28F512P33BFD based on the following engineering criteria:

Both devices meet identical memory capacity and NOR Flash technology requirements
Access time specifications are equivalent at 95 ns
Operating temperature range is identical (-40°C to 85°C)
Voltage supply ranges overlap within the 2.7V to 3.6V window, suitable for standard 3.3V systems
Both devices maintain ROHS3 compliance and identical MSL ratings
The substitute device is currently in active production status, ensuring long-term availability
Write cycle time of the substitute (60 ns) provides performance improvement over the original specification (95 ns)

PCB layout redesign is required due to package footprint differences. The 64-LBGA (11x13) package of the substitute differs from the 64-EasyBGA (8x10) package of the original part. Pin-to-pin signal compatibility must be verified against the specific application schematic and memory controller interface requirements.

Frequently Asked Questions (FAQ)

Q: Can MT28EW512ABA1LPC-0SIT directly replace PC28F512P33BFD without PCB modification?

A: No. While both devices are 64-pin BGA packages with compatible electrical specifications, the physical footprints differ. PC28F512P33BFD uses 64-EasyBGA (8x10) while MT28EW512ABA1LPC-0SIT uses 64-LBGA (11x13). PCB layout redesign is required.

Q: What is the voltage compatibility between these two parts?

A: PC28F512P33BFD operates at 2.3V to 3.6V, while MT28EW512ABA1LPC-0SIT operates at 2.7V to 3.6V. Both are compatible with standard 3.3V supply systems. Applications requiring operation below 2.7V must verify compatibility with the substitute device.

Q: Are the memory organizations interchangeable?

A: Yes. PC28F512P33BFD is organized as 32M x 16, while MT28EW512ABA1LPC-0SIT supports both 64M x 8 and 32M x 16 configurations. The 32M x 16 mode ensures functional equivalence for existing designs.

Q: What is the significance of the write cycle time difference?

A: MT28EW512ABA1LPC-0SIT has a 60 ns write cycle time compared to 95 ns for PC28F512P33BFD. This represents improved performance and does not create compatibility issues for systems designed around the original 95 ns specification.

Q: Why is PC28F512P33BFD classified as obsolete?

A: Obsolete status indicates the part is no longer manufactured by Micron Technology Inc. MT28EW512ABA1LPC-0SIT maintains active production status, making it the recommended choice for new designs and ongoing system support.

Q: Are compliance certifications identical?

A: Yes. Both devices are ROHS3 compliant, REACH unaffected, and carry identical MSL ratings of 3 (168 Hours). Compliance documentation is equivalent for both parts.

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