LAST TIME BUY NOTICE: M29F200FB55M3E2 is approaching end-of-life. Last order date: Contact us. View available alternative parts →
Micron Technology

M29F200FB55M3E2 - 2Mbit 55ns NOR Flash 5V 44-SO | Micron

MPN: M29F200FB55M3E2 ✗ End of Life
In Stock Ships in 1-3 business days
5 V Vdss 128 k Rds(on) 44-SO (SOP44) Package Flash - NOR Memory IC Memory
Contact for pricing
MOQ: 1 |
Price updated: 2026-09-04
Volume Pricing
Qty Unit Price Extended
1 $0 $0.00
10 $0 $0.00
100 $0 $0.00
500 $0 $0.00
1,000 $0 $0.00
ℹ️ All prices are in USD

Drop-in alternatives for M29F200FB55M3E2 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.

Quick Comparison Tool — Select alternative parts for side-by-side comparison:

M29F200FB55M3F2

✅ Drop-In ⚠️ 参数待验证
📦 44-SO (SOP44)
identical 2 Mbit bottom boot 5 V 55 ns device in same 44-SO package; suffix revision difference only

📋 Reference alternative (not in catalog)

M29F200FT55M3F2

✅ Drop-In ⚠️ 参数待验证
Micron Technology
📦 44-SO (SOP44)
Parallel NOR Flash · 2 Mbit (2097 kbits) · 256K x 8 / 128K x 16 · 55 ns · 5 V · Top Boot Block · Embedded program/erase controller, byte or word · -40C to +125C

✓ In Stock

$1.85 / Unit

View Datasheet →

M29F200FB55N3F2

✅ Drop-In ⚠️ 参数待验证
Micron Technology
📦 44-SO (SOP44)
Parallel NOR Flash · 2 Mbit (2097 kbits) · 256K x 8 bit / 128K x 16 bit · 128 K (x16 mode) · 16 bits · 5 V · 55 ns · Bottom Boot Block (FB)

✓ In Stock

$4.2 / Unit

View Datasheet →

M29F200BT70M1F

✅ Drop-In
📦 44-SO (SOP44)
70 ns access time vs 55 ns (-27% slower read); top boot vs bottom boot; listed in Findchips comparison with target part

📋 Reference alternative (not in catalog)

TMS28F200BZT-70BDBJL

✅ Drop-In
📦 44-SO (SOP44)
cross-brand 2 Mbit 5 V NOR flash equivalent, 70 ns vs 55 ns (-27%); appears in Findchips comparison with target part - verify command-set compatibility

📋 Reference alternative (not in catalog)

M29F200FB55M3E2 Maximum Ratings & Electrical Characteristics

Memory Type Flash - NOR Memory IC
Density 2097 kbits (2 Mbit)
Organization 128K x 16 bits
Number of Words 128 k
Bits per Word 16 bits
Interface Parallel
Access Time 55 ns
Supply Voltage (VCC) 5 V
Boot Block Architecture Bottom Boot Block
Program / Erase Controller Embedded byte/word program algorithms
Operating Temperature -40C to +125C
Package Type 44-SO (SOP44)
Mounting Type Surface Mount
Brand Micron Technology Inc.

M29F200FB55M3E2 44-so (sop44) Pin Configuration Guide

Complete pinout information for M29F200FB55M3E2 (44-so (sop44) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.

44-so (sop44) package pinout diagram for M29F200FB55M3E2

No detailed pinout data available for M29F200FB55M3E2.

Refer to the datasheet for full pin configuration.

Safe Operating Area (SOA) & Thermal Characteristics

Safe Operating Area Chart Default safe operating area chart for M29F200FB55M3E2 Drain-to-Source Voltage (Vds) Drain Current (Id)

No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.

Typical Applications

M29F200FB55M3E2 is suitable for 6 applications: Embedded Boot Code Storage, Industrial Control Systems, Telecom and Networking Line Cards, Legacy 5V System Maintenance and Repair, Automotive and Transportation Electronics, Set-Top Box and Consumer Legacy Designs.

🖥️

Embedded Boot Code Storage

The M29F200FB55M3E2 stores boot code and reset vectors in microprocessor-based systems. Its bottom boot block architecture places the first sectors at the low-address region where 5 V microcontrollers typically begin execution, and its 55 ns asynchronous parallel interface allows the CPU to execute code directly from flash (XIP) without RAM shadowing. The 2 Mbit (128K x 16) density accommodates compact firmware images typical of industrial control and telecom boards. The embedded program/erase controller enables field firmware updates through standard command sequences, while suspend/resume operation allows continued code reads during background erase. The -40C to +125C operating range supports unconditioned industrial cabinets.

🏭

Industrial Control Systems

In factory automation controllers and PLC I/O modules, the M29F200FB55M3E2 provides non-volatile firmware and parameter storage on a 5 V parallel bus. The 55 ns access time matches the bus timing of classic industrial 5 V microprocessors without wait states, preserving deterministic read latency critical for real-time control loops. The 2 Mbit array holds the control program plus recipe/calibration data in a single memory, simplifying BOM. Its -40C to +125C temperature range covers unconditioned enclosures near motors and drives. Because the part is EOL, new industrial designs should pair current stock with a validated drop-in from the same M29F200 family to secure lifecycle supply.

🌐

Telecom and Networking Line Cards

Telecom line cards and network interface boards historically used the M29F200FB55M3E2 for protocol firmware and board identity data. The 5 V supply aligns with legacy backplane logic families, and the 55 ns parallel read supports fast power-on firmware fetch during card initialization. The 128K x 16 organization maps efficiently to 16-bit data paths common in telecom ASIC interfaces. The embedded program/erase controller allows remote firmware upgrade over the network, with sector erase enabling incremental image updates. The 44-SO surface-mount package suits the dense card layouts of rack-mounted telecom equipment, and the extended temperature range handles central-office thermal conditions.

🔧

Legacy 5V System Maintenance and Repair

Service organizations maintaining legacy 5 V embedded systems - test equipment, medical devices, transportation controllers - rely on the M29F200FB55M3E2 to replace failed flash devices without PCB redesign. The 55 ns timing and 5 V single-supply operation preserve original system performance, and the bottom boot block matches original reset-vector placement. Sourcing from remaining EOL stock or validated family drops-ins (M29F200FB55M3F2) keeps repair turnarounds short. Before replacement, verify the sector organization and programming algorithm command-set in the repair procedure, since firmware update utilities are often written against the specific M29F200 command interface documented in the manufacturer datasheet.

🚗

Automotive and Transportation Electronics

The M29F200FB55M3E2's -40C to +125C operating range suits under-hood and vehicle-body control modules that store calibration tables and firmware on a 5 V bus. Its 2 Mbit density covers the compact code footprints of earlier-generation ECUs and dashboard controllers, while the 55 ns access time meets the read timing of 5 V automotive microprocessors. The bottom boot block layout matches reset vector conventions of these processors, enabling direct XIP boot. For in-field recalibration, the embedded program/erase controller executes parameter rewrites via standard command sequences. Because the part is EOL, automotive repair and low-volume continuation programs should qualify the same-family FB55M3F2 variant for long-term supply.

📺

Set-Top Box and Consumer Legacy Designs

Earlier set-top box, DVD player, and consumer electronics platforms used the M29F200FB55M3E2 to hold channel tables, boot loaders, and base firmware on a 5 V parallel bus. The 55 ns asynchronous interface supports direct code fetch by the system's 5 V MPEG or control processor, avoiding RAM duplication and reducing BOM cost. The 2 Mbit array accommodates compact boot plus parameter storage, while sector-based erase supports parameter updates during use. Its 44-SO package fits cost-driven single-sided consumer PCBs. For service stocking, the same-family M29F200FT55M3F2 top-boot variant should also be inventoried, since consumer platforms used both boot orientations across board revisions.

What is the memory density and organization of M29F200FB55M3E2?
The M29F200FB55M3E2 is a 2 Mbit (2,097,152-bit) parallel NOR flash memory organized as 128K words x 16 bits. According to the Micron datasheet, it operates from a single 5 V supply and offers a 55 ns access time, making it suitable for zero-wait-state microprocessor code execution in embedded systems.
What is the access time of M29F200FB55M3E2?
The M29F200FB55M3E2 has a 55 ns access time, which allows connection to fast microprocessor buses without wait states at 5 V operation. This fast asynchronous parallel read timing is one of the key advantages of this device over slower 70 ns or 90 ns legacy NOR flash parts such as the M29F200BT70.
What package does M29F200FB55M3E2 come in?
The M29F200FB55M3E2 is supplied in a 44-pin SO (SOP44) surface-mount package, as listed by DigiKey and Micron's product catalog. This wide-body small-outline package supports standard reflow assembly. Note that family members with the N suffix instead ship in a TSOP44 package, which is NOT footprint-compatible with the 44-SO version.
What supply voltage does M29F200FB55M3E2 require?
The M29F200FB55M3E2 operates from a single 5 V supply (VCC = 5 V) for both read and program/erase operations, per the Micron datasheet. It is a 5 V-only device; when interfacing with 3.3 V processors, level shifting or a 3 V flash family member is required.
What is the difference between M29F200FB55M3E2 and M29F200FT55M3F2?
The FB suffix denotes a bottom boot block architecture while the FT suffix denotes a top boot block architecture; both are 2 Mbit, 5 V, 55 ns devices. The choice depends on where the microprocessor reset vector sits: bottom boot for reset-at-address-zero designs, top boot for reset-at-top-of-memory designs. They are not functionally interchangeable without address remapping.
Is M29F200FB55M3E2 still in production?
The M29F200FB55M3E2 is an end-of-life (EOL) legacy part from the original Numonyx/ST M29F family now under Micron Technology. It is generally not available from authorized distributors except as residual stock; purchasing typically requires broker/RFQ channels. Engineers should plan a replacement strategy, and XAIPART lists drop-in family alternatives on this page.
What is the operating temperature range of M29F200FB55M3E2?
The M29F200FB55M3E2 operates from -40C to +125C, per the manufacturer's specifications published in datasheet summaries. This industrial/extended temperature range makes it appropriate for industrial control, telecom, and transportation environments where ambient conditions exceed consumer-grade limits.
Where can I buy M29F200FB55M3E2 and what does it cost?
The M29F200FB55M3E2 can be sourced through XAIPART via RFQ and through broker networks such as Octopart-listed distributors (7 distributors are listed on Octopart as of 2026-09-05). Because the part is EOL, authorized-channel stock is limited and prices vary significantly by lot age and quantity; request a quote for current pricing and lead time rather than relying on historical unit prices.
What is the best drop-in replacement for M29F200FB55M3E2?
The closest same-brand drop-in for designs that can tolerate a top boot block is the M29F200FT55M3F2 (2 Mbit, 5 V, 55 ns, same family). For identical bottom boot architecture, M29F200FB55M3F2 matches. Always confirm the boot block position matches your reset vector location before substituting, and verify the package suffix (M = SO44, N = TSOP44) matches your PCB footprint.
M29F200FB55M3E2 vs M29F200BT70M1F - which is better for industrial firmware storage?
The M29F200FB55M3E2 offers a 55 ns access time versus 70 ns for the M29F200BT70M1F, so the M3E2 part supports faster processor buses without wait states. For slower legacy 5 V buses, either part works and the 70 ns variant may be cheaper. Both operate at 5 V in wide-body SO packages, so the practical selection driver is bus speed and availability of remaining EOL stock.
Is there a Micron equivalent for the Intel/AMD 28F200 NOR flash?
Yes, the M29F200 family is a pin-compatible 2 Mbit 5 V NOR flash family that cross-references the 28F200 generation of devices; Findchips lists the M29F200FB55M3E2 against parts such as the TMS28F200BZT-70BDBJL. Cross-brand substitutions must be validated pin-to-pin in the 44-SO package and for command-set compatibility in your firmware before qualifying the swap.
Where can I download the M29F200FB55M3E2 datasheet PDF?
The M29F200FB55M3E2 datasheet is available from Micron's official part-detail page at micron.com (search the parallel NOR flash part catalog for M29F200FB55M3E2) and from mirror sites such as datasheetq.com. Always use the official Micron document as the authoritative reference for timing, pinout, and AC/DC characteristics.
Can M29F200FB55M3E2 execute code in place (XIP)?
Yes. As a parallel NOR flash, the M29F200FB55M3E2 supports execute-in-place: its 55 ns asynchronous parallel interface allows the processor to fetch instructions directly from the array without first copying code to RAM. Its embedded suspend/resume capability additionally lets the CPU read code while an erase operation completes in the background.
What are the key specifications of M29F200FB55M3E2 that engineers should know?
Engineers should know: 2 Mbit density in 128K x 16 organization, 55 ns access time, single 5 V supply, embedded program/erase controller with automatic byte/word program algorithms, bottom boot block layout, -40C to +125C operating range, and a 44-pin SO surface-mount package. Source: Micron parallel NOR flash part catalog and DigiKey product listing.
Is M29F200FB55M3E2 the same as M29F200FB5AN6E2?
No. Both are 2 Mbit bottom boot NOR flash devices in the M29F200 family, but per FindIC's comparison the M29F200FB5AN6E2 uses a different package suffix (AN6, a TSOP-type package) and exhibits some electrical differences from the M29F200FB55M3E2. They are functional equivalents but not drop-in replaceable on the same 44-SO footprint without PCB change.

Engineering reference data for M29F200FB55M3E2 — comparison, design guidance, and compliance information.

Selection Guide

Choose the M29F200FB55M3E2 when you need an exact-match replacement in an existing 5 V, 44-SO, bottom boot block design requiring 55 ns read timing - it is the fastest member of the 2 Mbit M29F200 family. Choose M29F200FB55M3F2 when identical functionality is needed but M3E2-suffix stock is exhausted; it is the closest same-family continuation part. Choose M29F200FT55M3F2 only if your processor's reset vector sits at the top of memory, since its boot blocks are at the opposite end. Choose M29F200BT70M1F or TMS28F200BZT-70BDBJL when your bus timing tolerates 70 ns and price or availability favors slower EOL stock - but validate command-set compatibility for the cross-brand TI part. For any new design, all these parts are EOL: consider migrating to the 3 V M29W family instead of building new supply-chain risk on legacy 5 V NOR flash.

Comparison with Alternatives

Parameter This Product M29F200FB55M3F2 M29F200FT55M3F2 M29F200BT70M1F TMS28F200BZT-70BDBJL
Package 44-SO (SOP44) 44-SO (SOP44) - same 44-SO (SOP44) - same 44-SO (SOP44) - same 44-SO - verify body dimensions
Brand Micron Technology Micron Technology Micron Technology Micron Technology Texas Instruments
Density 2 Mbit (128K x 16) 2 Mbit 2 Mbit 2 Mbit 2 Mbit
Access Time 55 ns 55 ns 55 ns 70 ns 70 ns
Supply Voltage 5 V 5 V 5 V 5 V 5 V
Boot Block Architecture Bottom boot block Bottom boot block Top boot block [DATA_NEEDED] [DATA_NEEDED]
Operating Temperature -40C to +125C [DATA_NEEDED] [DATA_NEEDED] [DATA_NEEDED] [DATA_NEEDED]
Lifecycle Status EOL EOL (later suffix revision) EOL (later suffix revision) EOL EOL

Key Differentiators

  • Fastest access time in the 2 Mbit 5 V family (vs M29F200BT70M1F)
  • Bottom boot block matches reset-at-address-zero designs (vs M29F200FT55M3F2)
  • Extended industrial temperature range in a 5 V-only package (vs TMS28F200BZT-70BDBJL)

Design Notes

Verify the boot block orientation before substitution: M29F200FB parts place boot blocks at the low-address end, M29F200FT parts at the high-address end. Swapping orientations without remapping the reset vector will brick the board at power-up. Also confirm the package suffix - M = SO44, N = TSOP44 - since these bodies are mechanically different and not footprint-compatible despite identical electrical behavior.

The M29F200FB55M3E2 is a 5 V-only device. When interfacing with 3.3 V processors, check that address/data/control lines tolerate the 5 V VOH level or add level shifters; overdriving 3.3 V-only inputs can damage the host IC. Estimated: budget extra supply current during program and erase operations versus read mode - consult the manufacturer datasheet ICC tables for exact values, since erase current can be several times the read current.

Place 0.1 uF ceramic decoupling capacitors directly across VCC and GND pins of the 44-SO package, plus one bulk 10 uF capacitor per device. The 55 ns asynchronous bus transitions generate fast edge rates; keep address and data traces short and matched within the bank to limit ringing. Ground return continuity under the package improves signal integrity on the wide 16-bit data bus.

Because this part is EOL, qualify at least one drop-in (M29F200FB55M3F2 in the same package) before committing remaining production builds. Validate firmware command sequences against the actual installed part - the embedded program/erase controller timing differs slightly between suffix revisions, so flash drivers written for one revision may need timeout-parameter adjustments for another.

Compliance Information

RoHS
Unknown
REACH
Unknown
AEC-Q100
Not Applicable
Lead Free
Unknown
Halogen Free
Unknown
Conflict Minerals
Unknown

Compliance data was not present in the provided verified web data for this EOL legacy part; consult the official Micron part-detail page for current material declarations.

Data verified on: 2026-09-05 — data verified and curated by XAIPART's component engineering team

Related Searches

M29F200FB55M3E2 M29F200FB55M3E2 datasheet Micron M29F200FB55M3E2 M29F200FB55M3E2 2Mbit NOR flash 55ns 44-SO package NOR flash 5V M29F200FB55M3E2 drop-in replacement M29F200FB55M3E2 vs M29F200BT70M1F M29F200FB55M3E2 buy stock price boot code flash memory industrial controller what is the access time of M29F200FB55M3E2 M29F200FB55M3E2 equivalent cross reference 5V parallel NOR flash -40 to 125C

Related Components & Terms

Micron Technology M29F200FB55M3E2 M29F200 family parallel NOR flash NOR memory non-volatile memory memory IC bottom boot block top boot block 44-SO package SOP44 TSOP44 execute in place XIP embedded program/erase controller 55 ns access time 5 V supply M29F200BT70M1F TMS28F200BZT-70BDBJL Numonyx EOL component industrial temperature range
Quick Quote RFQ
Fill in complete details — our sales team will respond within 24 hours
Part Number Manufacturer Package QTY Target Price Extended
Total: $0.00 USD
Quote submitted!

We will respond to your email within 24 hours

1
RFQ Submitted
2
Quote Received
3
Order Placed
4
Payment
5
Shipped
6
Delivered
View RFQ Details