M29W400FT55N3E - 4Mbit NOR Flash 55ns 48-TSOP | Micron
Teilenummer: M29W400FT55N3E ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $4.2 | $4,20 |
| 10 | $3.85 | $38,50 |
| 100 | $3.45 | $345,00 |
| 500 | $3.1 | $1.550,00 |
| 1.000 | $2.8 | $2.800,00 |
M29W400FT55N3E Übersicht
Parallel NOR Flash is a nonvolatile memory technology that provides random, byte-addressable read access over a parallel address and data bus, making it a subset of the broader Flash memory and semiconductor memory hierarchy. Unlike serial NOR (SPI) devices, parallel NOR offers faster access times and direct code execution (XIP) capability, which is why it remains the boot-memory of choice in embedded processors, MCUs, and FPGAs despite the rise of SPI Flash.
Key features of the M29W400FT55N3E include the 55 ns access time for fast code fetch, the wide 2.7 V to 3.6 V operating range covering all common 3 V rails, and an asymmetric sector architecture with sector sizes of 16 KB, 8 KB, 32 KB, and 64 KB that lets designers place boot code, parameters, and data blocks efficiently. Partstack lists the temperature grade as AUTOMOTIVE, and Microchip USA confirms an operating range of -40C to +125C.
Architecturally, the device belongs to Micron's M29W family of 3 V parallel NOR Flash, using a single VCC supply for program, erase, and read operations per the datasheet (VCC = 2.7 V to 3.6 V for program, erase, and read). The FT suffix denotes the top-boot-block version, placing the small boot sectors at the top of the address map, which suits processors that fetch reset vectors from the top of memory.
Typical applications include automotive ECU boot code storage, industrial control firmware, set-top boxes, networking equipment, and embedded systems requiring reliable code storage across -40C to +125C. The automotive temperature grade makes it particularly suited to under-hood and body-electronics modules.
A key design consideration is sector-erase and program timing: parallel NOR erase operations take considerably longer than reads, so firmware should use polling or interrupt status schemes. Confirm the VCC rail stays within 2.7 V to 3.6 V during erase to avoid write errors.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in-Alternativen für M29W400FT55N3E – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit M29W400FT55N3E (gleiche Bauform und Footprint) – abweichend in Package, Density, Organization, Interface, Memory Type.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
M29W400FB55N3E
✅ Drop-In✓ Auf Lager
Preis auf Anfrage
Datenblatt ansehen →M29W400FB55N3F
✅ Drop-In✓ Auf Lager
$2.55 / Stück
Datenblatt ansehen →M29F400FT55N3E2
✅ Drop-In✓ Auf Lager
$4.15 / Stück
Datenblatt ansehen →M29F400FB55N3E2
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
M29W320DB70N3E
✅ Drop-In✓ Auf Lager
$1.95 / Stück
Datenblatt ansehen →M29W400FT55N3E Grenzwerte & elektrische Eigenschaften
| Speichertyp | Flash - NOR Memory IC |
| Speichergröße | 4 Mbit |
| Schnittstelle | Parallel |
| Access Time | 55 ns |
| Supply Voltage (VCC) | 2.7 V to 3.6 V (program, erase and read) |
| Sector Size | 16 KB, 8 KB, 32 KB, 64 KB (asymmetric boot-block) |
| Boot Block Position | Top (FT suffix) |
| Betriebstemperatur | -40C to +125C |
| Temperature Grade | Automotive |
| Gehäuse | 48-TSOP I |
| Number of Terminals | 48 |
| Package Code / Shape | TSSOP / Rectangular |
| Montageart | Surface Mount |
| Feuchtigkeitsempfindlichkeitsgrad (MSL) | 3 (168 Hours) |
| Packaging | Tray |
| Peak Reflow Time | 30 s max |
| Companion Access-Time Grade | 55 ns and 70 ns versions available in family |
M29W400FT55N3E tssop / rectangular Pinbelegungsleitfaden
Pinbelegung für M29W400FT55N3E (tssop / rectangular-Gehäuse). Dieser digitale IC umfasst GPIO, Kommunikationsschnittstellen (UART, SPI, I2C) und Versorgungspins. Alternative Pin-Funktionen und Konfigurationsoptionen entnehmen Sie dem Herstellerdatenblatt. Unverzichtbar für Embedded-System-Design und PCB-Layout.
Keine detaillierten Pinbelegungsdaten verfügbar für M29W400FT55N3E.
Siehe die Datenblatt für die vollständige Pin-Konfiguration.
Typische Anwendungen
M29W400FT55N3E ist geeignet für 6 Anwendungs: Automotive ECU Boot Code Storage, Industrial Control Firmware Storage, Set-Top Box and Consumer Boot ROM, Networking Equipment Code Storage, Embedded FPGA/MCU Configuration Backup, Medical Device Firmware Storage.
Automotive ECU Boot Code Storage
The M29W400FT55N3E fits automotive ECU boot storage because its AUTOMOTIVE temperature grade and -40C to +125C operating range cover under-hood and body-control environments, while the 55 ns access time permits zero-wait-state code fetch for many 3.3 V MCUs at boot. The FT top-boot-block layout places the small 8 KB and 16 KB sectors at the top of the map, matching processors whose reset vectors sit at the highest addresses. Program and erase run from the single 2.7 V to 3.6 V rail, eliminating a separate programming supply in the vehicle electrical architecture. A typical design connects the 16-bit data bus directly to the MCU external bus interface with the 64 KB sectors holding calibration code; the trade-off versus SPI flash is a 48-pin footprint, but parallel boot removes serial-clock setup risk during cold-crank voltage dips.
Empfohlen
Industrial Control Firmware Storage
Industrial PLC I/O modules and motor-control boards benefit from the M29W400FT55N3E's -40C to +125C rating and deterministic parallel read timing of 55 ns, which keeps boot code execution timing predictable across factory-floor temperature swings. The asymmetric sector map (16 KB, 8 KB, 32 KB, 64 KB) lets firmware keep parameter blocks in small, quickly-erased 8 KB sectors while application code occupies 64 KB sectors, cutting field-update erase time significantly. Because the device programs and erases from the same 2.7 V to 3.6 V supply as the controller logic, no charge-pump or 12 V programming rail is needed, simplifying the power tree. Designers should implement status-polling firmware for erase completion, as parallel NOR erase latencies far exceed read latency, and reserve one 64 KB sector as a download buffer for in-field firmware upgrades.
Empfohlen
Set-Top Box and Consumer Boot ROM
Set-top boxes and consumer media terminals have historically used parallel NOR such as the M29W400FT55N3E for boot ROM because the SoC fetches reset code directly (execute-in-place) over the parallel bus with a 55 ns access time, avoiding the serial-flash boot handshake and its latency. The 4 Mbit capacity is sufficient for bootloaders plus compressed firmware loaders, while the top-boot sectors protect the immutable boot image from overwrites during OTA updates. Operating from the shared 2.7 V to 3.6 V consumer 3.3 V rail keeps the power design trivial; the MSL 3 (168 hours) rating fits standard consumer reflow lines with a 30 s peak reflow time. The trade-off against SPI NOR is board area and cost at low densities, so this part suits platforms with an existing parallel bus and mature firmware.
Empfohlen
Networking Equipment Code Storage
Routers, switches, and line cards use the M29W400FT55N3E to hold the golden boot image that recovers the main firmware after a failed upgrade. The 55 ns access time and parallel interface deliver fast, deterministic early boot, and the -40C to +125C automotive grade adds margin for unventilated telecom racks. The 8 KB and 16 KB sectors are ideal for storing MAC addresses, serial numbers, and board configuration that changes frequently but must survive power loss. Designers typically wire the 16-bit data bus to the network processor with 0402 series termination resistors on the high-speed address lines to control ringing; adding 0.1 uF plus 10 uF ceramic decoupling at each VCC pin keeps the 3.6 V ceiling respected during program bursts drawn by adjacent switching regulators on the same rail.
Empfohlen
Embedded FPGA/MCU Configuration Backup
In systems where an FPGA or MCU loads its bitstream from a parallel memory, the M29W400FT55N3E provides a 4 Mbit nonvolatile store with 55 ns random access that simplifies the loader state machine: no SPI commands, modes, or clocks, just address-driven reads. Its 2.7 V to 3.6 V operation matches the common 3.3 V configuration rail, and the top-boot sectors keep the golden bitstream in protected 16 KB blocks separate from user-updateable regions. Automotive-grade temperature capability (-40C to +125C) extends use into transportation and heavy-equipment controllers. The engineering consideration is sector-erase latency during bitstream updates - firmware should double-buffer into a 64 KB sector and validate checksums before erasing the protected block, ensuring a power interruption never leaves the device without a bootable image.
Empfohlen
Medical Device Firmware Storage
Diagnostic and monitoring equipment requires firmware that survives power loss and remains readable across long service lives, making the M29W400FT55N3E's parallel NOR architecture appropriate: byte-addressable 55 ns reads allow the CPU to run integrity checks (CRC over the boot image) quickly at every power-up. The 8 KB small sectors support audit-log and calibration-constant storage with fast single-sector erase cycles, reducing maintenance downtime during recalibration. The wide -40C to +125C range exceeds clinical requirements, providing derating margin that supports reliability demonstrations. Note that its MSL 3 (168 hours) rating must be tracked through contract-manufacturing floor time, and because this is an automotive-graded commercial part, manufacturers should document supplier qualification for their quality files rather than assume medical-specific certification.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für M29W400FT55N3E – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | M29W400FB55N3E | M29W400FB55N3F | M29F400FT55N3E2 | M29F400FB55N3E2 | M29W320DB70N3E |
|---|---|---|---|---|---|---|
| Package | 48-TSOP I | 48-TSOP I - same | 48-TSOP I - same | 48-TSOP I - same | 48-TSOP I - same | 48-TSOP I - same |
| Brand | Micron Technology | Micron Technology | Micron Technology | Micron Technology | Micron Technology | Micron Technology |
| Density | 4 Mbit | 4 Mbit | 4 Mbit | 4 Mbit | 4 Mbit | 32 Mbit |
| Access Time | 55 ns | 55 ns | 55 ns | 55 ns | 55 ns | 70 ns |
| Supply Voltage | 2.7 V to 3.6 V | 2.7 V to 3.6 V | 2.7 V to 3.6 V | 2.7 V to 3.6 V | 2.7 V to 3.6 V | 2.7 V to 3.6 V |
| Boot Block Position | Top (FT) | Bottom (FB) | Bottom (FB) | Top (FT) | Bottom (FB) | Bottom (DB) |
Wichtigste Unterscheidungsmerkmale
- Top boot-block organization (FT suffix) (vs. M29W400FB55N3E)
- Fastest access-time grade in family (vs. M29W320DB70N3E)
- Automotive temperature grade (vs. M29F400FT55N3E2)
Designhinweise
The M29W400FT55N3E uses a single VCC rail of 2.7 V to 3.6 V for program, erase, and read per the Micron datasheet - there is no separate VPP programming pin. Ensure the 3.3 V rail stays above 2.7 V during erase/program bursts; if the rail is shared with switching regulators, add 10 uF bulk plus 0.1 uF ceramic decoupling at the flash. Estimated: a brownout to 2.6 V mid-erase can corrupt the sector, so add a supervisor (e.g., reset IC with ~2.8 V threshold) that gates the write-enable line.
The 55 ns access-time grade supports fast parallel bus fetch, so address-line ringing matters. Estimated: with a 15 MHz zero-wait-state bus, address setup margins are small; keep TSOP-to-CPU traces under ~10 cm and add 22-33 ohm series resistors on address lines if stubs exceed that. Verify worst-case AC timing at +125C by applying datasheet derating, not 25C typical values, especially in automotive enclosures.
Do not confuse boot-block orientation: the FT suffix (this part) places small boot sectors at the TOP of the map; FB variants mirror them to the bottom. Substituting FB for FT on the same PCB is electrically a drop-in (same 48-TSOP I pinout) but firmware linker scripts and vector tables must be remapped or the system will not boot. Also respect MSL 3 (168 hours) floor-life before reflow, with 30 s maximum peak reflow time.
Compliance-Informationen
Partstack lists temperature grade as AUTOMOTIVE, but AEC-Q100 qualification status, RoHS/REACH, and lead-free data were not present in the retrieved web data; verify on Micron's official product page.