PH28F320W18BE60A Equivalent & Substitute Parts

Part Overview

The PH28F320W18BE60A is a 32Mbit NOR Flash memory IC manufactured by Micron Technology Inc., designed for parallel interface applications requiring non-volatile storage. This component features a 56-VFBGA package with 52 MHz clock frequency and 60 ns access time, operating across the -40°C to 85°C temperature range. The part is classified as obsolete, making identification of compatible substitute components essential for ongoing system support and new design implementations.

Key Parameters

Parameter	Value
Memory Size	32Mbit
Memory Organization	2M x 16
Memory Interface	Parallel
Technology	FLASH - NOR
Clock Frequency	52 MHz
Access Time	60 ns
Write Cycle Time	60 ns
Voltage Supply	1.7V ~ 1.95V
Operating Temperature	-40°C ~ 85°C
Package	56-VFBGA
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
MSL Rating	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution of the PH28F320W18BE60A is determined by strict alignment of the following critical parameters:

Memory capacity: 32Mbit fixed requirement
Memory organization: 2M x 16 configuration
Interface type: Parallel interface mandatory
Technology: FLASH - NOR only
Package form factor: 56-VFBGA required for PCB compatibility
Voltage supply range: Must accommodate 1.7V ~ 1.95V minimum specification
Operating temperature range: -40°C ~ 85°C minimum coverage
RoHS compliance: ROHS3 Compliant status
MSL rating: 3 (168 Hours) or better

The M58WR032KT70ZB6F TR meets these substitution criteria while maintaining functional and physical compatibility with the original design.

Parameter Comparison

Parameter	PH28F320W18BE60A	M58WR032KT70ZB6F TR	Compatibility
Memory Size	32Mbit	32Mbit	Match
Memory Organization	2M x 16	2M x 16	Match
Memory Interface	Parallel	Parallel	Match
Technology	FLASH - NOR	FLASH - NOR	Match
Clock Frequency	52 MHz	66 MHz	Compatible (higher)
Access Time	60 ns	70 ns	Compatible (slower)
Write Cycle Time	60 ns	70 ns	Compatible (slower)
Voltage Supply	1.7V ~ 1.95V	1.7V ~ 2V	Compatible (wider range)
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	Match
Package	56-VFBGA	56-VFBGA (7.7x9)	Match
Mounting Type	Surface Mount	Surface Mount	Match
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Match
MSL Rating	3 (168 Hours)	3 (168 Hours)	Match
Product Status	Obsolete	Active	Substitute available

Engineering Selection Recommendations

The M58WR032KT70ZB6F TR serves as a direct functional substitute for the obsolete PH28F320W18BE60A. Both components are manufactured by Micron Technology Inc. and maintain identical memory capacity, organization, interface type, and package specifications. The substitute part carries Active product status, ensuring continued availability and supply chain reliability.

The M58WR032KT70ZB6F TR exhibits slightly relaxed timing specifications (70 ns access and write cycle time versus 60 ns) and operates at a higher clock frequency (66 MHz versus 52 MHz). These parameter variations remain within acceptable substitution tolerances for parallel NOR Flash applications. The expanded voltage supply range (1.7V ~ 2V) provides additional operational flexibility compared to the original specification.

Both parts maintain identical RoHS3 compliance and MSL ratings, confirming suitability for standard manufacturing and storage environments. The 56-VFBGA package dimensions (7.7x9 mm) are consistent with the original design footprint.

Frequently Asked Questions (FAQ)

Q: Can the M58WR032KT70ZB6F TR directly replace the PH28F320W18BE60A in existing designs?

A: Yes. Both components share identical memory capacity (32Mbit), organization (2M x 16), parallel interface architecture, and 56-VFBGA package form factor. The substitute part meets all critical electrical and mechanical parameters required for direct substitution.

Q: What are the timing differences between these parts?

A: The M58WR032KT70ZB6F TR operates with 70 ns access and write cycle times compared to 60 ns for the original part. This represents a 10 ns increase in cycle time. The substitute also operates at 66 MHz clock frequency versus 52 MHz. These differences are compatible with parallel NOR Flash application requirements.

Q: Are there voltage supply considerations for substitution?

A: The original part operates at 1.7V ~ 1.95V, while the substitute supports 1.7V ~ 2V. The substitute's expanded upper voltage limit (2V versus 1.95V) provides additional operational margin. Both parts function within standard 1.8V supply rails used in embedded systems.

Q: Does the substitute part maintain the same package footprint?

A: Yes. Both components use the 56-VFBGA package with identical pinout and mechanical dimensions (7.7x9 mm). No PCB layout modifications are required for substitution.

Q: What is the significance of the product status change from Obsolete to Active?

A: The substitute part's Active status indicates ongoing manufacturing and distribution availability. This ensures reliable supply chain access for both new designs and legacy system support, eliminating obsolescence concerns associated with the original component.

Q: Are compliance certifications maintained in the substitute part?

A: Yes. Both the original and substitute parts carry ROHS3 compliance certification and identical MSL ratings (3, 168 Hours), confirming compatibility with standard manufacturing processes and storage requirements.

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