M29F800FT55N3F2 - 8Mbit 5V NOR Flash 55ns | Micron
MPN: M29F800FT55N3F2 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.06 | $1.06 |
| 10 | $1 | $10.00 |
| 100 | $0.92 | $92.00 |
| 500 | $0.85 | $425.00 |
| 1,000 | $0.78 | $780.00 |
Drop-in alternatives for M29F800FT55N3F2 — 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:
M29F800FB55N3F2
✅ Drop-In✓ In Stock
$2.47 / Unit
View Datasheet →M29F800FT55M3F2
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$2.1 / Unit
View Datasheet →M29F400FT55N3F2
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$1.51 / Unit
View Datasheet →M29F160FT55N3F2
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$4.9 / Unit
View Datasheet →MBM29F800TA-55PFTN
✅ Drop-In📋 Reference alternative (not in catalog)
M29F800FT55N3F2 Maximum Ratings & Electrical Characteristics
| Memory Type | NOR Flash, Parallel |
| Memory Size | 8 Mbit |
| Organization | 1M x 8 bit / 512K x 16 bit |
| Supply Voltage | 5 V (single supply) |
| Access Time | 55 ns |
| Interface | Parallel |
| Boot Block Architecture | Top boot block (T) |
| Programming Voltage | 5.0 V VCC (no 12 V VPP required) |
| Package | 48-pin TSOP |
| Mounting Type | Surface Mount |
| Packaging | Tape & Reel (T/R) |
M29F800FT55N3F2 48-pin tsop Pin Configuration Guide
Complete pinout information for M29F800FT55N3F2 (48-pin tsop 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.
No detailed pinout data available for M29F800FT55N3F2.
Refer to the datasheet for full pin configuration.
Safe Operating Area (SOA) & Thermal Characteristics
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
M29F800FT55N3F2 is suitable for 6 applications: Industrial Controller Boot Code Storage, Telecom Line Card Code Storage, Networking Equipment Boot ROM, Set-Top Box Firmware Memory, Test and Measurement Instrument Firmware, Automotive and Legacy Embedded Retrofit.
Industrial Controller Boot Code Storage
The M29F800FT55N3F2 stores boot firmware and application code for 5V industrial PLCs and motor control boards. Its 55 ns asynchronous access time allows the microprocessor to execute code in place (XIP) with zero wait states at typical 8/16-bit bus frequencies, and the top boot block hardware-protects reset code against accidental erase during field reprogramming. Because program and erase complete at the standard 5.0V VCC, no high-voltage pump circuitry is needed on the board, reducing BOM cost and board area. The 48-pin TSOP surface-mount package withstands industrial assembly flow and provides the large parallel bus required by legacy 8051-class, 68K-class, and similar 5V microprocessor families.
Recommended
Telecom Line Card Code Storage
Telecom line cards and network interface boards traditionally use 5V parallel NOR Flash to hold protocol firmware and DSP load images. The M29F800FT55N3F2 fits these designs directly: the 512K x16 organization matches 16-bit bus widths common on telecom backplanes, and the 55 ns access time supports in-place execution of monitor code while larger application images are shadowed to RAM. The RB (ready/busy) output provides a hardware handshake for erase/program completion, important during in-service firmware upgrades. Its top boot block can hold the boot monitor with sector protection enabled, and 5V-only operation aligns with legacy card power rails, avoiding level-shift circuitry.
Recommended
Networking Equipment Boot ROM
Routers, switches, and access equipment from the 5V era use parallel NOR Flash as the boot ROM that initializes the CPU and loads the main OS image. The M29F800FT55N3F2 provides 8 Mbit capacity - sufficient for a U-Boot-style bootloader plus a compressed OS image - with the 55 ns access time needed for early code execution before SDRAM is initialized. Hardware sector protection on the boot block prevents a failed field upgrade from bricking the unit, and in-system programming at 5.0V VCC allows recovery over the CPU bus without socketed parts or external programmers. The x8/x16 selectable organization simplifies reuse of one firmware build across board revisions.
Recommended
Set-Top Box Firmware Memory
Legacy set-top box and broadcast receiver designs rely on 5V parallel NOR Flash to hold the bootloader and configuration firmware. The M29F800FT55N3F2 offers the random-access nanosecond-class read performance serial Flash cannot provide, enabling the decoder CPU to start fetching reset vectors immediately at power-up. The top boot block keeps the secure boot sector isolated and protected, while uniform block erase supports clean over-the-air firmware update schemes. Its single 5V supply matches the power architecture of these consumer platforms, and the 48-pin TSOP package suits the moderate board density of set-top mainboards, with tape-and-reel supply supporting volume SMT assembly.
Recommended
Test and Measurement Instrument Firmware
Bench instruments and rack-mounted measurement equipment built around 5V microprocessor buses store calibration data, self-test routines, and main firmware in parallel NOR Flash. The M29F800FT55N3F2 delivers 55 ns read access so diagnostic code runs in place during power-on self-test, and its in-system programmability at 5.0V lets manufacturing lines update firmware through the instrument's own CPU bus, eliminating socketed EPROMs and UV erasers. Sector protection safeguards the calibration block against corruption during upgrades. The dual x8/x16 organization lets one PCB design serve both cost-reduced 8-bit variants and full 16-bit bus variants, consolidating sourcing across a product family.
Recommended
Automotive and Legacy Embedded Retrofit
Service organizations maintaining ECU boards, engine controllers, and 5V embedded legacy systems frequently need replacement parallel NOR Flash with original 5V signaling. The M29F800FT55N3F2 directly replaces aging AMD/Fujitsu 29F800-class parts: the 55 ns timing and 5V-only operation preserve original bus timing margins, the top boot block matches typical ECU reset-vector placement, and the 48-pin TSOP footprint matches legacy PCB land patterns. Because programming needs only 5.0V VCC, field reprogramming via the OBD or service connector remains possible. Designers should confirm block organization and endurance requirements against the original part datasheet before retrofitting.
Recommended
Recommended Products Summary
Engineering reference data for M29F800FT55N3F2 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | M29F800FB55N3F2 | M29F800FT55M3F2 | M29F400FT55N3F2 | MBM29F800TA-55PFTN |
|---|---|---|---|---|---|
| Package | 48-pin TSOP | 48-pin TSOP - same | 48-pin TSOP family | 48-pin TSOP - same | 48-pin TSOP - same |
| Brand | Micron Technology | Micron Technology | Micron Technology | Micron Technology | Fujitsu |
| Density | 8 Mbit | 8 Mbit | 8 Mbit | 4 Mbit | 8 Mbit |
| Supply Voltage | 5 V | 5 V | 5 V | 5 V | 5 V |
| Access Time | 55 ns | 55 ns | 55 ns | 55 ns | 55 ns |
| Boot Block Position | Top boot | Bottom boot | Top boot | Top boot | Top boot |
| Organization | 1M x8 / 512K x16 | 1M x8 / 512K x16 | 1M x8 / 512K x16 | 512K x8 / 256K x16 | 1M x8 / 512K x16 |
| Programming Supply | 5.0 V VCC in-system (no 12V VPP) | 5.0 V VCC in-system | 5.0 V VCC in-system | 5.0 V VCC in-system | 5.0 V VCC in-system (no 12V VPP) |
Key Differentiators
- Top boot block architecture for reset-vector protection (vs M29F800FB55N3F2)
- Full 8 Mbit density in the 48-pin TSOP footprint (vs M29F400FT55N3F2)
- Proven cross-brand second source (vs MBM29F800TA-55PFTN)
- 5V-only in-system programming (vs All listed alternatives)
Design Notes
Decouple VCC with at least a 0.1 uF ceramic capacitor placed within a few millimeters of the 48-pin TSOP power pins, plus one bulk 4.7-10 uF capacitor per device. Parallel NOR draw significant transient current during program and erase operations; an inadequate decoupling network causes VCC droop that can corrupt the programming operation. Tie the BYTE pin firmly high or low (never left floating) to fix the x8 or x16 data bus width, and pull all unused address inputs to a defined logic level.
The most common substitution error is confusing top-boot (FT) with bottom-boot (FB) variants. Both are pin-to-pin identical in the 48-pin TSOP package, but the protected boot block sits at opposite ends of the address map. A board designed around top-boot reset vectors will fail with an FB part even though the footprint matches. Additionally, verify the sector/erase block organization against your linker map and flash driver sector table before swapping any M29F family member; block sizes and ordering differ across densities (400/800/160).
On 5V parallel buses, keep address and data trace lengths matched within roughly 20 mm and add series termination (22-33 ohm) on fast CPU outputs driving the Flash to control ringing. Use the RB (ready/busy) output with an interrupt or polling scheme rather than software-only polling of the status bits to make program/erase completion detection robust. Ensure the write-enable path includes proper bus contention control - never assert CE and OE simultaneously with WE active during reads, as this can drive the data bus into contention.
Estimated: read-mode supply current and standby current for this exact ordering code were not stated in the provided data ([DATA_NEEDED: ICC read]); consult the manufacturer datasheet current tables. As a design guideline, budget VCC at 5.0V +/- 10% per the M29F family specification and ensure the 5V rail can supply the peak program/erase current of the device plus margin. In multi-Flash systems, stagger erase operations or share a common bulk capacitor bank to avoid aggregate inrush collapsing the rail.
Compliance Information
Compliance status for this exact ordering code was not stated in the provided web data. Confirm RoHS/REACH/lead-free status via Micron's product page or a material declaration request.
