What is a cross-reference page for M28W640ECB90N6?
This page groups mapped replacement options for M28W640ECB90N6 so buyers and engineers can compare alternatives before requesting a quote or approving a substitute.
Alternative part analysis
M28W640ECB90N6 replacements, alternatives, and cross reference
Compare mapped replacement and alternative options for M28W640ECB90N6, then verify package, specifications, and application fit before approval.
Compare M28W640ECB90N6 against mapped replacement options
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Specification view
Parameter Comparison Chart
A side-by-side view of the source part and its mapped alternatives so buyers and engineers can screen package, availability, lifecycle, and key descriptors before RFQ.
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| Parameter Comparison Chart | Current part M28W640ECB90N6 STMicroelectronics |
|---|---|
| Part Number | M28W640ECB90N6 |
| Manufacturer | STMicroelectronics |
| Category | Integrated Circuits (ICs) |
| Subcategory | Memory |
| Package | - |
| Series | - |
| Key Attributes | - |
| Description | IC FLASH 64M PARALLEL 48TSOP |
| Lifecycle | - |
| Stock | 121,817 |
| Available | 77,852 |
| Min Order | 1 |
| Datasheet | Available |
| REACH Status | REACH Unaffected |
| Packaging | Tube |
| Lead Free | Contains Lead |
| Mounting Type | Surface Mount |
| Part Status | Obsolete |
| Categories | Integrated Circuits (ICs) |
| Terminal Position | DUAL |
| Reach Compliance Code | not_compliant |
| Qualification Status | Not Qualified |
| Terminal Pitch | 0.5mm |
| Operating Temperature | -40°C~85°C TA |
| Supply Voltage | 3V |
| Manufacturer | STMicroelectronics |
| Number of Functions | 1 |
| Surface Mount | YES |
| Memory Type | Non-Volatile |
| Number of Terminations | 48 |
| Number of Pins | 48 |
| Pin Count | 48 |
| ECCN | OBSOLETE |
| Length | 18.4mm |
| Common Flash Interface | YES |
| HTS Code | 8542.32.00.51 |
| Memory Interface | Parallel |
| Sub-Categories | Memory |
| Command User Interface | YES |
| Organization | 4MX16 |
| Package / Case | 48-TFSOP (0.724, 18.40mm Width) |
| Memory Format | FLASH |
| Memory Width | 16 |
| Boot Block | BOTTOM |
| Additional Feature | BOTTOM BOOT BLOCK |
| Sector Size | 4K32K |
| Standby Current-Max | 0.000005A |
| Operating Mode | ASYNCHRONOUS |
| Technology | FLASH - NOR |
| Access Time (Max) | 90 ns |
| Write Cycle Time - Word, Page | 90ns |
| Memory Density | 67108864 bit |
| Number of Sectors/Size | 8127 |
| Data Polling | NO |
| Toggle Bit | NO |
| Base Part Number | M28W640 |
| Manufacturer's Part No. | M28W640ECB90N6 |
| Height Seated (Max) | 1.2mm |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| RoHS Status | RoHS non-compliant |
| JESD-609 Code | e0 |
| ECCN Code | 3A991.B.1.A |
| HTSUS | 8542.32.0071 |
| Data Bus Width | 16b |
| Supply Voltage-Max (Vsup) | 3.6V |
| Terminal Finish | Tin/Lead (Sn/Pb) |
| Supply Voltage-Min (Vsup) | 2.7V |
| Voltage - Supply | 2.7V~3.6V |
| Memory Size | 64Mb 4M x 16 |
| Programming Voltage | 3V |
| Supply Current-Max | 0.02mA |
| Power Supplies | 1.8/3.33/3.3V |
| Actions |
Cross-reference FAQ
Replacement Part Questions
Short answers for teams reviewing M28W640ECB90N6 replacement and equivalent-part options.
Does a mapped alternative mean a guaranteed drop-in replacement for M28W640ECB90N6?
Not automatically. Cross-reference mapping helps shortlist candidates, but package, electrical behavior, qualification scope, and approval rules still need to be checked before release.
Which parameters should teams compare first for M28W640ECB90N6 alternatives?
Start with package, series, key attributes, lifecycle status, stock position, datasheet access, and the mapped pin-to-pin or cross-reference note. Then confirm application-specific requirements in the datasheet and RFQ stage.
Can I request a quote for an alternative to M28W640ECB90N6?
Yes. Use the product links or RFQ actions on this page to request pricing, availability, documentation, and sourcing support for any listed alternative part.
Is M28W640ECB90N6 obsolete, and what replacement should buyers review first?
Check the lifecycle row on this page first. If buyers need a fast starting point, the strongest mapped replacement currently surfaced here is , followed by the other alternatives shown in the comparison table.
Engineering support
Need help validating the replacement path?
If your team is unsure whether a mapped alternative to M28W640ECB90N6 from STMicroelectronics is really usable, contact us for help on package fit, pin compatibility, key parameter gaps, and qualification-facing review questions.
Contact a hardware engineer
Email our engineering support contact at [email protected], or use the contact page if the question should be routed across sourcing, engineering, and support.
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Package and pin compatibility
Review whether the alternate path looks credible from package, footprint, and pin-level perspectives.
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Parameter and function gaps
Surface the electrical, interface, or application-fit questions that still need confirmation before approval.
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Qualification and approval prep
Organize the documentation, datasheet evidence, and validation checkpoints your internal team may still require.