M29W064FB70N3F - 64Mb NOR Flash 70ns AEC-Q100 | Micron Technology
MPN: M29W064FB70N3F β End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.62 | $1.62 |
| 10 | $1.48 | $14.80 |
| 100 | $1.36 | $136.00 |
| 500 | $1.28 | $640.00 |
| 1,000 | $1.2032 | $1,203.20 |
Drop-in alternatives for M29W064FB70N3F β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
M29W064FB70N3E
β Drop-Inπ Reference alternative (not in catalog)
M29W064FT70N3E
β Drop-Inπ Reference alternative (not in catalog)
M29W320DB70N3F
β Drop-Inβ In Stock
$1.3 / Unit
View Datasheet βM29W064FT70N3F
β Drop-In β οΈ εζ°εΎ ιͺθ―β In Stock
$6.3 / Unit
View Datasheet βM29W064FB70N3F Maximum Ratings & Electrical Characteristics
| Memory Type | NOR Flash, Parallel |
| Density | 64 Mbit |
| Organization | 8M x8 / 4M x16 |
| Supply Voltage | 2.7 V to 3.6 V |
| Access Time | 70 ns |
| Interface | Parallel, x8/x16 selectable (BYTE#) |
| Boot Block Configuration | Bottom boot block (FB) |
| Operating Temperature | -40C to +125C |
| Automotive Qualification | AEC-Q100 qualified |
| Package | 48-TSOP |
| Mounting Type | Surface Mount |
| Packaging | Tape & Reel (TR suffix) |
| Status Polling | RY/BY# hardware pin + data polling |
| Erase/Program Interface | Command set (M29W family compatible) |
| RoHS Status | Compliant (F suffix) |
| Part Status | Obsolete |
M29W064FB70N3F Pin Configuration
| Pin 1 | A15 β Address input |
| Pin 2 | A14 β Address input |
| Pin 3 | A13 β Address input |
| Pin 4 | A12 β Address input |
| Pin 5 | A11 β Address input |
| Pin 6 | A10 β Address input |
| Pin 7 | A9 β Address input |
| Pin 8 | A8 β Address input |
| Pin 9 | A19 β Address input |
| Pin 10 | A20 β Address input |
| Pin 11 | WE# β Write enable (active low) |
| Pin 12 | RP# β Reset/Power-down (active low) |
| Pin 13 | A21 β Address input |
| Pin 14 | WP# β Write protect (active low) |
| Pin 15 | RY/BY# β Ready/Busy status output |
| Pin 16 | A18 β Address input |
| Pin 17 | A17 β Address input |
| Pin 18 | A7 β Address input |
| Pin 19 | A6 β Address input |
| Pin 20 | A5 β Address input |
| Pin 21 | A4 β Address input |
| Pin 22 | A3 β Address input |
| Pin 23 | A2 β Address input |
| Pin 24 | A1 β Address input |
| Pin 25 | A0 β Address input |
| Pin 26 | E# β Chip enable (active low) |
| Pin 27 | VSS β Ground |
| Pin 28 | Q0 β Data output/input 0 |
| Pin 29 | Q8 β Data output/input 8 |
| Pin 30 | Q1 β Data output/input 1 |
| Pin 31 | Q9 β Data output/input 9 |
| Pin 32 | Q2 β Data output/input 2 |
| Pin 33 | Q10 β Data output/input 10 |
| Pin 34 | Q3 β Data output/input 3 |
| Pin 35 | Q11 β Data output/input 11 |
| Pin 36 | VCCQ β Output buffer supply |
| Pin 37 | Q4 β Data output/input 4 |
| Pin 38 | Q12 β Data output/input 12 |
| Pin 39 | Q5 β Data output/input 5 |
| Pin 40 | Q13 β Data output/input 13 |
| Pin 41 | Q6 β Data output/input 6 |
| Pin 42 | Q14 β Data output/input 14 |
| Pin 43 | Q7 β Data output/input 7 |
| Pin 44 | Q15/A-1 β Data 15 / address A-1 in byte mode |
| Pin 45 | VSSQ β Output buffer ground |
| Pin 46 | BYTE# β Byte/word organization select |
| Pin 47 | OE# β Output enable (active low) |
| Pin 48 | VCC β Core supply, 2.7 V to 3.6 V |
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
M29W064FB70N3F is suitable for 6 applications: Automotive ECU Boot Firmware, Telematics and Infotainment Modules, Industrial PLC and Automation Controllers, Networking Equipment Code Storage, Set-Top Box and Consumer Firmware, FPGA Configuration Storage.
Automotive ECU Boot Firmware
The M29W064FB70N3F is purpose-built for automotive ECU boot code storage: its AEC-Q100 qualification and -40C to +125C operating range cover body-electronics and powertrain-adjacent modules, while the 70 ns access time allows the MCU to execute boot code directly from the parallel bus without RAM shadowing delays. The FB (bottom boot block) organization places small, individually protected sectors at the bottom of the array, exactly where the reset vector and bootloader reside, protecting them against accidental erase during field firmware updates. The 64 Mbit capacity accommodates bootloader, calibration data, and application images in a single device. RY/BY# hardware status output lets the firmware poll program/erase completion without occupying the bus, keeping interrupt latency predictable in safety-relevant code paths.
Recommended
Telematics and Infotainment Modules
Telematics control units and entry-level infotainment platforms need reliable, non-volatile code storage that survives temperature cycling and power interruptions, and the M29W064FB70N3F fits that role with its 64 Mbit array, block protection, and automotive temperature rating. The x8/x16 selectable bus (via BYTE#) lets designers use a cost-optimized 8-bit bus during early development and widen to 16 bits in production, halving code-fetch time for larger map and media application images. The 70 ns access time supports zero-wait-state execution at typical 32-bit automotive MCU bus frequencies up to roughly 40-50 MHz with pipeline limitations considered. Its command-set interface is shared across the M29W family, allowing firmware reuse when moving between 32 Mb and 64 Mb densities.
Recommended
Industrial PLC and Automation Controllers
Industrial programmable logic controllers store firmware, ladder-logic runtime, and configuration in non-volatile parallel NOR flash, and the M29W064FB70N3F's 64 Mbit capacity and 70 ns random access make it well suited to this duty. Its -40C to +125C range covers unconditioned cabinets and outdoor panels, while the parallel interface integrates directly with classic industrial MCU and FPGA code buses. The WP# hardware write-protect pin allows the retained configuration sector to be locked during normal runtime, guarding against power-glitch-induced corruption on factory floors where supply dips are common. Per-page program operation with status polling keeps update windows short during remote firmware maintenance over fieldbus links.
Recommended
Networking Equipment Code Storage
Switches, routers, and line cards historically used parallel NOR flash for bootloader and OS image storage, and the M29W064FB70N3F's 8 MB capacity matches the typical dual-image scheme where one bank holds the running image and the other a golden fallback. The 70 ns access time permits in-place boot code execution from reset, letting the CPU bring up Ethernet management before any DRAM initialization completes. Asymmetric boot blocks protect the low-address boot loader sector map while large main blocks erase quickly for image updates. BYTE# bus-width selection supports both 8-bit and 16-bit legacy designs on the same PCB footprint, simplifying hardware variant management across product families with different CPU bus widths.
Recommended
Set-Top Box and Consumer Firmware
Set-top boxes and consumer AV devices rely on parallel NOR flash for secure bootloader and firmware partitions, and the M29W064FB70N3F supplies 64 Mbit at a low single-unit cost (from about $1.20 at volume as of 2026-09-02). Its command-set compatibility with the broad M29W family means boot ROM code written for 32 Mb or 128 Mb siblings ports with minimal changes. The bottom boot blocks hold the immutable bootloader with individual sector protection, while the remaining main blocks store the application image and channel databases that field updates rewrite frequently. The RY/BY# pin lets a low-cost 8-bit controller manage updates without adding bus polling overhead during OTA firmware upgrades.
Recommended
FPGA Configuration Storage
Parallel NOR flash is a classic configuration memory for FPGAs and CPLDs that load their bitstream at power-up, and the M29W064FB70N3F's 64 Mbit array stores multiple configuration images for design fallback schemes. The 70 ns access time supports fast configuration clocking so a mid-range FPGA completes loading in well under 100 ms, meeting system bring-up timing requirements in industrial and communications equipment. Bottom boot blocks can also hold board-level firmware alongside the bitstream in one device, reducing BOM count. Designers should generate the configuration clock from the FPGA or a dedicated oscillator and honor the flash's specified setup/hold timings, which the 70 ns grade accommodates at conservative clock rates.
Recommended
Recommended Products Summary
Engineering reference data for M29W064FB70N3F β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | M29W064FB70N3E | M29W064FT70N3E | M29W064FT70N3F | M29W320DB70N3F |
|---|---|---|---|---|---|
| Package | 48-TSOP | 48-TSOP - same | 48-TSOP - same | 48-TSOP - same | 48-TSOP - same |
| Brand | Micron Technology | Micron Technology | Micron Technology | Micron Technology | Micron Technology |
| Density | 64 Mbit | 64 Mbit | 64 Mbit | 64 Mbit | 32 Mbit |
| Organization | 8M x8 / 4M x16 | 8M x8 / 4M x16 | 8M x8 / 4M x16 | 8M x8 / 4M x16 | 4M x8 / 2M x16 |
| Access Time | 70 ns | 70 ns | 70 ns | 70 ns | 70 ns |
| Boot Block Position | Bottom (FB) | Bottom (FB) | Top (FT) | Top (FT) | Bottom (DB) |
| 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 |
| Operating Temperature | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C |
| Lifecycle Status | Obsolete | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
Key Differentiators
- Bottom boot block organization for reset-vector protection (vs M29W064FT70N3E)
- Automotive AEC-Q100 qualification with -40C to +125C range (vs M29W320DB70N3F)
- Only current-revision suffix (F) among verified variants (vs M29W064FB70N3E)
Design Notes
The 48-TSOP footprint requires clean bus routing: keep address lines length-matched within about 10 mm to avoid skew at bus speeds enabled by the 70 ns access time, and place 100 nF ceramic decoupling capacitors at both VCC and VCCQ pins (pins 48 and 36) as close as possible to the package. Separate VCCQ (output buffer supply) from VCC on the power plane or via a ferrite bead if switching noise from nearby DC-DC converters is present, since supply ripple couples directly into output edge rates on parallel flash.
The most frequent integration error with the M29W064FB family is mismatching boot-block position: FB is bottom boot, FT is top boot, and firmware erase/protect maps are not interchangeable even though the devices are pin-to-pin identical. Second, never leave RP# floating - it must be actively driven high for normal operation; a floating RP# places the device in reset and reads will fail intermittently. Third, in byte mode (BYTE# low) the Q15/A-1 pin (pin 44) becomes address A-1 and must be driven; leaving it unconnected causes half the array to be unreachable.
Estimated: at 3.3 V the M29W064F draws its maximum current during program/erase operations (order of 15-20 mA per family data - confirm against the datasheet AC characteristics table). Size the 3.3 V rail for simultaneous read current of all parallel-flash instances plus margin, and hold VCC within 2.7-3.6 V during erase; brown-outs mid-erase can corrupt blocks, so implement a supervisor that holds RP# low until the supply is stable. Avoid powering VCCQ before VCC to prevent bus contention during MCU power-up.
During bulk erase, block-protected sectors are skipped by design, but ensure your driver never issues a chip erase when bootloader sectors carry protection-disabled state after an uncontrolled reset. Add pull-up resistors (about 10 kOhm) on OE# and CE# so the flash outputs stay tri-stated while the MCU resets, preventing bus fights with the boot ROM. For production test access, route the WP# pin to a test point - it is the fastest hardware interlock for factory programming fixtures.
Compliance Information
Automotive AEC-Q100 qualification per datasheets.com parametric data; RoHS/lead-free inferred from the F (RoHS) suffix per Micron part-numbering convention. REACH, halogen-free, and conflict-minerals status not stated in provided data.
