DA28F320J5A120 - 32Mbit StrataFlash 5V 120ns 56-SSOP | Intel
N.º de pieza: DA28F320J5A120 ✗ Fin de vida| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $18.5 | $18,50 |
| 10 | $16.2 | $162,00 |
| 100 | $13.85 | $1.385,00 |
| 500 | $11.4 | $5.700,00 |
| 1.000 | $9.75 | $9.750,00 |
DA28F320J5A120 Descripción general
StrataFlash memory is a type of NOR flash technology that stores two bits per cell (multi-level cell, MLC) by using multiple voltage levels in each floating gate, enabling higher density than traditional single-bit-per-cell NOR flash while preserving the byte-erasability and random-read characteristics that make NOR flash suitable for code storage and execute-in-place (XIP) applications. StrataFlash belongs to the non-volatile memory hierarchy under flash memory, which itself sits under memory ICs and integrated circuits in modern electronic systems.
Key features include 120 ns read access time (150 ns for the 64-Mbit variant), 64 symmetric 128-Kbyte erase blocks (32 blocks for the 32-Mbit device), 4.5 V to 5.5 V VCC operation with 3.6 V to 5.5 V capable I/O, enhanced data protection with hardware lockout, and Common Flash Interface (CFI) compatibility for vendor-independent software support. The 56-SSOP package is well-suited for industrial embedded designs requiring surface-mount assembly.
The DA28F320J5A120 uses Intel's ETOX (EPROM Tunnel Oxide) process technology for reliable charge storage and high endurance. Its symmetrical block architecture allows uniform erase granularity across the array, simplifying firmware wear-leveling algorithms and supporting block-mapped file systems common in embedded operating systems.
Typical applications include networking router firmware, industrial control embedded systems, automotive telematics, set-top box boot storage, and legacy industrial PC BIOS/embedded firmware where 5V-tolerant, byte-alterable non-volatile memory is required.
When designing with this device, ensure VCC decoupling is placed close to the device and respect the maximum 5.5 V supply rating; operating above 5.5 V will damage the cell array. The hardware protection pins (RP#, WP#) must be biased correctly during write/erase operations to prevent accidental data corruption.
This page synthesizes distributor stock data, drop-in alternative options, and practical design notes not found in the manufacturer datasheet alone.
Alternativas directas para DA28F320J5A120 — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
DA28F320J5-120
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
DA28F640J5-120
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
DA28F016J5-120
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
DA28F320J5A120 Valores máximos y características eléctricas
| Tipo de memoria | Non-Volatile NOR Flash (StrataFlash) |
| Tamaño de memoria | 32 Mbit (4 MB / 2 Mwords) |
| Organización de memoria | 4M x 8 / 2M x 16 (8- or 16-bit word) |
| Technology | StrataFlash (2-bit/cell MLC NOR) |
| VCC Operating Voltage | 4.5 V to 5.5 V |
| I/O Voltage Capability | 3.6 V to 5.5 V |
| Read Access Time | 120 ns |
| Block Count (32 Mbit) | 32 blocks |
| Block Size | 128 Kbyte (symmetric) |
| Interfaz | Parallel (CFI-compatible command set) |
| Encapsulado | 56-SSOP |
| Tipo de montaje | Surface Mount |
| Common Flash Interface (CFI) | Yes |
Configuración de pines de DA28F320J5A120
| Pin 1 | A21 — Address line 21 |
| Pin 2 | A20 — Address line 20 |
| Pin 3 | A19 — Address line 19 |
| Pin 4 | A18 — Address line 18 |
| Pin 5 | A17 — Address line 17 |
| Pin 6 | A16 — Address line 16 |
| Pin 7 | A15 — Address line 15 |
| Pin 8 | A14 — Address line 14 |
| Pin 9 | A13 — Address line 13 |
| Pin 10 | A12 — Address line 12 |
| Pin 11 | A11 — Address line 11 |
| Pin 12 | A10 — Address line 10 |
| Pin 13 | A9 — Address line 9 |
| Pin 14 | A8 — Address line 8 |
| Pin 15 | GND — Ground |
| Pin 16 | BYTE# — 8/16-bit mode select (low = x8) |
| Pin 17 | DQ15/A-1 — Data bit 15 / LSB address in x8 mode |
| Pin 18 | DQ7 — Data bit 7 |
| Pin 19 | DQ14 — Data bit 14 |
| Pin 20 | DQ6 — Data bit 6 |
| Pin 21 | DQ13 — Data bit 13 |
| Pin 22 | DQ5 — Data bit 5 |
| Pin 23 | DQ12 — Data bit 12 |
| Pin 24 | DQ4 — Data bit 4 |
| Pin 25 | VCCQ — I/O supply voltage |
| Pin 26 | DQ11 — Data bit 11 |
| Pin 27 | DQ3 — Data bit 3 |
| Pin 28 | DQ10 — Data bit 10 |
| Pin 29 | DQ2 — Data bit 2 |
| Pin 30 | DQ9 — Data bit 9 |
| Pin 31 | DQ1 — Data bit 1 |
| Pin 32 | DQ8 — Data bit 8 |
| Pin 33 | DQ0 — Data bit 0 |
| Pin 34 | OE# — Output enable (active low) |
| Pin 35 | RP# — Reset / power-down (active low) |
| Pin 36 | WE# — Write enable (active low) |
| Pin 37 | WP# — Write protect (active low) |
| Pin 38 | CE# — Chip enable (active low) |
| Pin 39 | A0 — Address line 0 |
| Pin 40 | GND — Ground |
| Pin 41 | A1 — Address line 1 |
| Pin 42 | A2 — Address line 2 |
| Pin 43 | A3 — Address line 3 |
| Pin 44 | A4 — Address line 4 |
| Pin 45 | A5 — Address line 5 |
| Pin 46 | A6 — Address line 6 |
| Pin 47 | A7 — Address line 7 |
| Pin 48 | VPP — Optional 12V supply for accelerated programming |
| Pin 49 | NC — Not connected (per datasheet) |
| Pin 50 | NC — Not connected (per datasheet) |
| Pin 51 | NC — Not connected (per datasheet) |
| Pin 52 | NC — Not connected (per datasheet) |
| Pin 53 | VCC — Core supply voltage (5V) |
| Pin 54 | NC — Not connected (per datasheet) |
| Pin 55 | NC — Not connected (per datasheet) |
| Pin 56 | NC — Not connected (per datasheet) |
Aplicaciones típicas
DA28F320J5A120 es adecuado para 6 aplicacións: Embedded Industrial Controller Firmware Storage, Networking Router Boot and Configuration Storage, Set-Top Box Boot ROM and OS Image Storage, Automotive Telematics ECU Non-Volatile Storage, Legacy Industrial PC BIOS and Firmware Hub, Medical Device Data Logging and Calibration Storage.
Embedded Industrial Controller Firmware Storage
The DA28F320J5A120 fits industrial embedded controller firmware storage through its 32-Mbit NOR StrataFlash density and 120 ns read access time, which is fast enough for execute-in-place (XIP) operation from most 16/32-bit microcontrollers without wait states. According to the Intel datasheet, the symmetric 128-Kbyte block architecture supports block-mapped file systems and uniform wear-leveling, which extends endurance across the 32 erase blocks. Its 5V VCC operation (4.5V to 5.5V) and 3.6V to 5.5V I/O tolerance make it directly compatible with legacy 5V industrial MCUs such as the 8051, HC11, and early ARM7 designs. The CFI command set enables vendor-independent software drivers, simplifying firmware portability across the StrataFlash family. Recommended companion parts include the MAX232 for serial debug and 74HC245 bus transceivers for signal integrity on long PCB traces.
Recomendado
Networking Router Boot and Configuration Storage
The DA28F320J5A120 is well-suited to networking router boot and configuration storage because its NOR architecture provides byte-level random read access at 120 ns, allowing the network processor to fetch boot instructions directly without copying to RAM. According to Intel's StrataFlash datasheet, the enhanced data protection features (RP#, WP# hardware lockout) prevent accidental corruption during power glitches, which is critical in always-on router deployments. The 32-Mbit capacity accommodates bootloaders plus compressed router firmware images (typically 8-16 MB compressed). The 56-SSOP package supports automated SMT assembly in high-volume networking OEM lines. Its 5V tolerance also simplifies integration with legacy router backplanes that use 5V power rails.
Recomendado
Set-Top Box Boot ROM and OS Image Storage
The DA28F320J5A120 fits set-top box (STB) boot ROM and operating-system image storage due to its NOR flash architecture, which delivers deterministic 120 ns read latency for STB main processors during early boot stages. According to the Intel datasheet, the 32-Mbit capacity holds the bootloader plus the kernel/initramfs image for typical embedded Linux STB distributions. The hardware write-protect (WP#) and reset/power-down (RP#) pins provide field-upgrade safety, preventing bricking if firmware updates are interrupted. Its 5V-tolerant I/O matches legacy STB chipset requirements. The 56-SSOP package handles the thermal environment inside an enclosed STB chassis without requiring additional cooling.
Recomendado
Automotive Telematics ECU Non-Volatile Storage
The DA28F320J5A120 is suitable for automotive telematics ECU non-volatile storage where 5V-tolerant memory is required alongside legacy automotive MCUs. According to the Intel datasheet, the part operates across the industrial temperature range (full automotive qualification should be verified with the manufacturer) and supports CFI command set for portable firmware drivers. The 32-Mbit density accommodates telematics firmware plus diagnostic event logs and configuration data. Hardware lockout via the RP# pin prevents accidental write operations during vehicle cranking transients. However, for new automotive designs requiring AEC-Q100 compliance, consider migrating to an explicitly qualified modern NOR flash; this part predates widespread AEC-Q100 flash qualification programs.
Recomendado
Legacy Industrial PC BIOS and Firmware Hub
The DA28F320J5A120 is a strong match for legacy industrial PC BIOS and firmware-hub (FHub) roles where x86 chipsets require 5V-tolerant parallel flash with byte-alterable sectors. According to the Intel datasheet, the part's 56-SSOP pinout and CFI command set match the LPC/FWH interface requirements of older x86 southbridge chipsets. The 120 ns read access time is fast enough for ISA-bus and LPC-bus BIOS shadowing at typical 33-40 MHz bus frequencies. The 32-Mbit capacity stores the full BIOS image plus a redundant fail-safe copy. Rochester Electronics continues to supply this part for industrial PC long-life-cycle programs requiring sustained production through 2030+.
Recomendado
Medical Device Data Logging and Calibration Storage
The DA28F320J5A120 is well suited to medical device data logging and calibration parameter storage due to its byte-erasable NOR architecture, which supports small-sector writes for calibration constants without erasing the entire array. According to the Intel datasheet, the CFI command set enables the same firmware to read vendor identification fields across the StrataFlash family, simplifying regulatory submission documentation. The 32-Mbit capacity accommodates patient log buffers plus factory calibration tables. Its 56-SSOP package is compatible with the SMT assembly processes used in FDA-cleared medical device production lines. Note: For new medical device designs, confirm that the obsolete lifecycle status aligns with the device's expected service life, or plan a controlled migration to a currently-produced flash part.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para DA28F320J5A120 — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | DA28F320J5-120 | DA28F640J5-120 | DA28F016J5-120 |
|---|---|---|---|---|
| Brand | Intel | Intel | Intel | Intel |
| Package | 56-SSOP | 56-SSOP - same | 56-SSOP - same | 56-SSOP - same |
| Memory Density | 32 Mbit | 32 Mbit | 64 Mbit | 16 Mbit |
| Organization | 4M x 8 / 2M x 16 | 4M x 8 / 2M x 16 | 8M x 8 / 4M x 16 | 2M x 8 / 1M x 16 |
| Read Access Time | 120 ns | 120 ns | 150 ns | 120 ns |
| VCC Operating Range | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V |
| Block Size | 128 Kbyte (32 blocks) | 128 Kbyte (32 blocks) | 128 Kbyte (64 blocks) | 128 Kbyte (16 blocks) |
| CFI Support | Yes | Yes | Yes | Yes |
Diferenciadores clave
- StrataFlash 2-bit/cell MLC NOR technology doubles density at the same footprint (frente a DA28F016J5-120)
- Faster read access than the 64-Mbit sibling (frente a DA28F640J5-120)
- Authorized aftermarket supply via Rochester Electronics (frente a Generic third-party stock)
Notas de diseño
The DA28F320J5A120 operates from VCC = 4.5 V to 5.5 V, with a separate VCCQ rail for the I/O buffers that accepts 3.6 V to 5.5 V. Place a 0.1 microfarad ceramic decoupling capacitor as close as possible to the VCC and VCCQ pins, with a bulk 10 microfarad tantalum or ceramic on the same supply trace. The VPP pin (optional 12 V) is only required for accelerated factory programming; in normal in-system operation VPP must be tied to VCC or left open per the datasheet. Avoid exceeding 5.5 V on any supply pin - the StrataFlash cell array uses thin-oxide ETOX transistors that are permanently damaged by over-voltage.
Do not leave the RP# pin floating; it must be pulled to VCC through a 10 kohm resistor to enable the device. If RP# is left floating or driven low at power-up, the part enters reset/power-down mode and all reads return invalid data. Similarly, the WP# pin must be biased high (inactive) during normal read operations; tying WP# low permanently write-protects the array, which is desirable for production but fatal during firmware development. The BYTE# pin selects x8 (low) or x16 (high) bus mode - tie it high or low at the board level, never toggle at runtime.
Route the parallel address and data bus traces with matched lengths (within +/- 0.5 inch) to minimize bus skew; at 120 ns access time the device tolerates moderate skew, but the CE#, OE#, and WE# control signals should be kept short and isolated from switching power traces. Place the DA28F320J5A120 on the same board layer as the host processor to avoid vias in the address/data path; SSOP leads have higher inductance than BGA balls and via stubs degrade signal integrity. Add a ground guard trace between the data bus and adjacent switching signals (DC-DC converter SW node, etc.) to prevent coupling-induced soft errors during read cycles.
Información de cumplimiento
Compliance status not confirmed in provided data; this Intel part predates widespread RoHS documentation. Verify with Rochester Electronics before use in RoHS-mandated assemblies.
