CHIPNOBO

Semiconductor Replacement Engineering & Supply Continuity

Memory

PRODUCT DATASHEET

ChipNobo MPN

NB28F020-90

GLOBAL BRAND CROSS-REFERENCE

Rochester Electronics, LLC

FLASH, 256KX8, 90NS, PQCC32

TN28F020-90

  • High-reliability design
  • Long-term stable supply
  • RoHS compliant
FLASH, 256KX8, 90NS, PQCC32

1. PRODUCT POSITIONING

NB28F020-90 is a product identity corresponding to the reference product TN28F020-90. This document presents the available product specifications, mechanical/package information and compatibility summary for engineering and procurement reference.

This document is a product information. Compatibility conclusions should be read together with the applicable Cross-Reference Identification (CID) rule, package/pin verification and engineering review record.

2. TECHNICAL SPECIFICATION COMPARISON (core parameters)
Parameter Rochester Electronics, LLC TN28F020-90 ChipNobo NB28F020-90 Match
Voltage - Supply 4.5V ~ 5.5V 4.5V ~ 5.5V ✓
Part Status Active Active ✓
Operating Temperature -40°C ~ 85°C (TA) -40°C ~ 85°C (TA) ✓
Mounting Type Surface Mount Surface Mount ✓
Programmable Not Verified Not Verified ✓
Memory Interface Parallel Parallel ✓
Memory Type Non-Volatile Non-Volatile ✓
Package / Case 32-LCC (J-Lead) 32-LCC (J-Lead) ✓
Memory Size 2Mbit 2Mbit ✓
Memory Organization 256K x 8 256K x 8 ✓
Access Time 90 ns 90 ns ✓
Memory Format FLASH FLASH ✓
Write Cycle Time - Word, Page 90ns 90ns ✓
Supplier Device Package 32-PLCC 32-PLCC ✓
Technology FLASH - NOR (SLC) FLASH - NOR (SLC) ✓
RoHS Status Not applicable Not applicable ✓
Moisture Sensitivity Level (MSL) 3 (168 Hours) 3 (168 Hours) ✓

CHIPNOBO

Semiconductor Replacement Engineering & Supply Continuity

Memory

PRODUCT DATASHEET

3. SUPPLY & LIFECYCLE
ChipNobo Number NB28F020-90
Lifecycle status Active
NRND No
EOL No
PCN monitor No
Last buy date No Deadline
Alternate availability Sufficient
4. APPLICATION AREAS
AI Server GPU Server
AI Accelerator Server Data Center Switch
Laptop Notebook Smartphone
ADAS Camera System Smart Cockpit
5G Base Station Industrial Computer
Semiconductor Equipment Medical Imaging Equipment

5. ENGINEERING & COMMERCIAL NOTES

  • The ChipNobo MPN is the public product identity used by ChipNobo for this replacement reference.
  • The original manufacturer and original MPN are retained as reference identity information.
  • Product PDF data are intended for engineering, procurement and supply-continuity reference.
  • Current price, MOQ, lead time, available supply source and regional availability should be confirmed through RFQ.
  • For customer-specific qualification, PCB footprint approval, reliability requirements or design-in approval, the customer should perform the applicable validation process.

CHIPNOBO REPLACEMENT · Semiconductor Replacement Engineering & Supply Continuity Partner

Document purpose: Product Information / Replacement Reference · Generated from the product data supplied for NB28F020-90.

Important Notice & Disclaimer

Document ID: 【CN-DATA-NB28F020-90】 Revision: 1.0 Status: Released

The information provided by ChipNobo is intended solely for engineering evaluation, product selection, procurement, and supply continuity reference purposes. Product specifications, lifecycle status, availability, and other information are subject to change without notice. Customers should always verify relevant information against the latest official documentation published by the respective manufacturers.

Cross-reference and replacement recommendations are provided for engineering reference purposes only. They do not constitute a guarantee of pin-to-pin compatibility, interchangeability, or suitability for any particular application. Customers are responsible for conducting all necessary engineering reviews, testing, and qualification prior to product selection and use.

Manufacturer names, trademarks, and part numbers are referenced solely for product identification purposes. Their use does not imply any affiliation with, endorsement by, or authorization from the respective manufacturers, unless expressly stated otherwise.

To the maximum extent permitted by applicable law, ChipNobo makes no warranties, express or implied, regarding the completeness, accuracy, or suitability of the information provided and shall not be liable for any loss or damage arising from its use or reliance, except as otherwise expressly agreed in writing and subject to applicable law.