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M29W640GT7AN6E
Micron Technology Inc.
IC FLASH 64MBIT PAR 48TSOP I
1571 Pcs New Original In Stock
FLASH - NOR Memory IC 64Mbit Parallel 70 ns 48-TSOP I
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5.0 / 5.0
- (87 Ratings)
M29W640GT7AN6E
Product Overview
7672423
DiGi Electronics Part Number
M29W640GT7AN6E-DGManufacturer
Micron Technology Inc.
M29W640GT7AN6E
Description
IC FLASH 64MBIT PAR 48TSOP IInventory
1571 Pcs New Original In Stock
FLASH - NOR Memory IC 64Mbit Parallel 70 ns 48-TSOP I
Quantity
Minimum 1
Minimum 1
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M29W640GT7AN6E Technical Specifications
Category
Memory, Memory
Packaging
-
Series
-
Product Status
Obsolete
DiGi-Electronics Programmable
Not Verified
Memory Type
Non-Volatile
Memory Format
FLASH
Technology
FLASH - NOR
Memory Size
64Mbit
Memory Organization
8M x 8, 4M x 16
Memory Interface
Parallel
Write Cycle Time - Word, Page
70ns
Access Time
70 ns
Voltage - Supply
2.7V ~ 3.6V
Operating Temperature
-40°C ~ 85°C (TA)
Mounting Type
Surface Mount
Package / Case
48-TFSOP (0.724", 18.40mm Width)
Supplier Device Package
48-TSOP I
Base Product Number
M29W640
Datasheet & Documents
HTML Datasheet
M29W640GT7AN6E-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
3 (168 Hours)
REACH Status
REACH Unaffected
ECCN
3A991B1A
HTSUS
8542.32.0071
Additional Information
Standard Package
96
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
Les prix affichés sont toujours clairs et sans surprise, ce qui est rassurant.
de desembre 02, 2025
Their cost benefits and logistics efficiency make shopping a joy.
de desembre 02, 2025
Fast shipping and attentive after-sales service make DiGi Electronics my top choice.
de desembre 02, 2025
DiGi Electronics continually demonstrates their leadership in green packaging.
de desembre 02, 2025
I appreciated the clear product descriptions and simple navigation that made browsing enjoyable.
de desembre 02, 2025
Fast shipping times help us meet our project deadlines effortlessly.
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Frequently Asked Questions (FAQ)
Can the M29W640GT7AN6E be used as a drop-in replacement for the SST39VF6401B in a legacy industrial control system design?
The M29W640GT7AN6E is not a direct drop-in replacement for the SST39VF6401B due to differences in command set protocols and timing characteristics, despite both being 64Mbit parallel NOR Flash devices. While pinouts are similar in 48-TSOP I packages, the M29W640GT7AN6E uses a standard JEDEC command set, whereas the SST39VF6401B relies on SST's proprietary SuperFlash® commands. Designers must update firmware to accommodate write and erase sequences, and verify voltage compatibility—the SST device supports 3.0V to 3.6V, while the M29W640GT7AN6E operates from 2.7V to 3.6V. Always validate timing margins on CE#, OE#, and WE# signals during transitions.
What are the key design-in risks when using the M29W640GT7AN6E in a new product given its obsolete status?
Using the M29W640GT7AN6E in new designs carries significant supply chain risks due to its obsolete status. While current inventory exists (1498 pcs), long-term availability is not guaranteed, increasing end-of-life exposure. Designers should implement a last-time-buy (LTB) strategy and evaluate migration paths to pin-compatible alternatives like the Spansion S29GL064N, which offers similar parallel interface timing but requires updated boot code. Incorporate design margins for future requalification, and store validated firmware images and test fixtures. The M29W640GT7AN6E’s MSL 3 rating also requires strict floor-life control during assembly.
How does the 70ns access time of the M29W640GT7AN6E impact real-time system performance in microprocessor-based designs?
The 70ns access time of the M29W640GT7AN6E limits maximum bus speeds to approximately 14.3 MHz, which may create bottlenecks in high-performance microprocessor or DSP-based systems requiring faster code execution from Flash. To mitigate, use burst-mode capable processors with on-chip cache or prefetch logic to reduce direct memory fetches. Alternatively, shadow firmware into SRAM at boot. Ensure PCB trace lengths from the M29W640GT7AN6E to the processor are impedance-controlled with minimal stubs to maintain signal integrity at 70ns timing, especially under high noise or temperature extremes.
What PCB layout and decoupling strategies are required for reliable M29W640GT7AN6E operation in automotive environments?
For reliable operation of the M29W640GT7AN6E in automotive applications (-40°C to 85°C), use a dedicated 2.7V to 3.6V supply with low-noise regulation and at least one 10μF bulk capacitor plus a 100nF ceramic capacitor placed within 5mm of VCC pins. Implement ground planes beneath the M29W640GT7AN6E to minimize inductance, and route address and data lines using controlled impedance traces to prevent skew exceeding 1ns between signals. Avoid routing sensitive lines near switching regulators. The 48-TSOP I package has reduced thermal dissipation—monitor power during sustained write cycles to prevent localized heating affecting adjacent components.
How does the M29W640GT7AN6E compare to modern QSPI NOR Flash options when upgrading a legacy system with limited board space?
Compared to modern QSPI NOR Flash like the Winbond W25Q64JV (64Mbit), the M29W640GT7AN6E offers faster random access (70ns vs ~80ms for QSPI in high-speed mode) but consumes significantly more PCB space and uses 48 signal lines versus 4–6 for QSPI. Replacing the M29W640GT7AN6E with QSPI requires updating the host controller interface and boot logic, which may not be feasible with microcontrollers lacking XIP support. The trade-off favors M29W640GT7AN6E in parallel bus systems needing deterministic performance, but QSPI wins in density, power efficiency, and footprint. Evaluate electrical loading and timing closure when retaining the M29W640GT7AN6E in space-constrained retrofits.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
M29W640GT7AN6E CAD Models
Micron Technology Inc. M29W640GT7AN6E PCB symbols & footprints
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