W29GL256PL9B Equivalent & Substitute Parts

Part Overview

The W29GL256PL9B is a 256Mbit NOR Flash memory IC manufactured by Winbond Electronics, designed for parallel interface applications in 64-LFBGA (11x13) surface mount packaging. This device operates across a 2.7V to 3.6V supply voltage range with an access time of 90 ns and supports memory organization of 32M x 8 or 16M x 16 configurations.

The W29GL256PL9B is classified as obsolete. Identification of equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this memory architecture.

Substiute Parts

W29GL256PL9B

Winbond ElectronicsIn Stock: 736W29GL256PL9B Datasheet

Current PartRFQ

MT28EW256ABA1LPC-0SIT

Micron Technology Inc.In Stock: 6906MT28EW256ABA1LPC-0SIT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the W29GL256PL9B are identified based on strict equivalence across the following critical parameters:

• Memory Capacity: 256Mbit (exact match required)
• Memory Technology: FLASH - NOR (identical architecture)
• Memory Organization: 32M x 8 or 16M x 16 (functional equivalence)
• Memory Interface: Parallel (identical signal protocol)
• Package Type: 64-LBGA (11x13) (mechanical and electrical compatibility)
• Supply Voltage Range: 2.7V ~ 3.6V (operational compatibility)
• Operating Temperature Range: -40°C ~ 85°C (environmental compatibility)
• Mounting Type: Surface Mount (assembly compatibility)
• Regulatory Compliance: ROHS3 Compliant, REACH Unaffected (certification alignment)

The MT28EW256ABA1LPC-0SIT manufactured by Micron Technology Inc. meets all substitution criteria. This device maintains identical memory capacity, technology, organization, interface, package dimensions, voltage specifications, and temperature range. The substitute part demonstrates improved electrical performance characteristics (75 ns access time versus 90 ns, 60 ns write cycle time versus 90 ns) while maintaining full backward compatibility with the original design.

Parameter Comparison

Engineering Selection Recommendations

The MT28EW256ABA1LPC-0SIT is a direct substitute for the W29GL256PL9B based on the following engineering criteria:

Regulatory Compliance: Both devices maintain ROHS3 compliance and REACH unaffected status, ensuring alignment with current environmental and hazardous substance regulations.

Product Status: The W29GL256PL9B is obsolete, while the MT28EW256ABA1LPC-0SIT maintains active product status with verified programmability through DiGi-Electronics. This ensures ongoing availability and technical support for new production runs and field replacements.

Electrical Equivalence: Identical supply voltage range (2.7V ~ 3.6V), operating temperature range (-40°C ~ 85°C), and memory organization (32M x 8, 16M x 16) confirm functional compatibility in existing circuit designs.

Package Compatibility: Both devices utilize 64-LBGA (11x13) surface mount packaging with identical mechanical dimensions, enabling direct PCB layout compatibility without redesign.

Performance Enhancement: The MT28EW256ABA1LPC-0SIT provides improved access time (75 ns versus 90 ns) and write cycle time (60 ns versus 90 ns), delivering faster memory operations while maintaining backward compatibility.

Supply Chain Availability: The MT28EW256ABA1LPC-0SIT demonstrates significantly higher inventory availability (6888 Pcs versus 714 Pcs), supporting sustained production requirements.

Frequently Asked Questions (FAQ)

Q: Can the MT28EW256ABA1LPC-0SIT be used as a direct replacement for the W29GL256PL9B without PCB modifications?

A: Yes. Both devices share identical 64-LBGA (11x13) package dimensions, supply voltage specifications (2.7V ~ 3.6V), operating temperature range (-40°C ~ 85°C), and parallel memory interface. No PCB layout changes are required.

Q: What are the key differences between these two devices?

A: The primary differences are product status and performance characteristics. The W29GL256PL9B is obsolete, while the MT28EW256ABA1LPC-0SIT is active. The MT28EW256ABA1LPC-0SIT provides faster access time (75 ns versus 90 ns) and write cycle time (60 ns versus 90 ns). Both devices maintain identical memory capacity, organization, and electrical specifications.

Q: Are there any compliance or certification differences between these parts?

A: No. Both devices are ROHS3 compliant and REACH unaffected. Moisture sensitivity levels are identical at MSL 3 (168 Hours). Regulatory compliance is equivalent.

Q: What is the memory organization for both devices?

A: Both the W29GL256PL9B and MT28EW256ABA1LPC-0SIT support dual memory organization: 32M x 8 or 16M x 16. This flexibility allows configuration based on application requirements without affecting substitution compatibility.

Q: Is the MT28EW256ABA1LPC-0SIT available in the same packaging as the original part?

A: Yes. The MT28EW256ABA1LPC-0SIT is supplied in 64-LBGA (11x13) surface mount packaging, identical to the W29GL256PL9B. The substitute part is available in Tray packaging format.

Q: What is the significance of the faster access and write cycle times in the MT28EW256ABA1LPC-0SIT?

A: The improved timing specifications (75 ns access time and 60 ns write cycle time versus 90 ns for both parameters in the original part) indicate enhanced performance. These faster specifications are backward compatible with designs requiring the original 90 ns timing, allowing the substitute to operate in existing applications without timing violations.

Q: Are both devices suitable for the same operating temperature range?

A: Yes. Both devices operate across the identical temperature range of -40°C to 85°C (TA), ensuring equivalent thermal performance in all environmental conditions.