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Micron Technology
MT25QU256ABA8ESF-0SIT
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Tech Specifications
MT25QU256ABA8ESF-0SIT Description
MT25QU256ABA8ESF-0SIT
256Mb (32MB) 1.8V Quad SPI NOR Flash | 166MHz | Industrial Temperature | 16-SOIC
Density (32MB)
Supply Range
Clock Frequency
Quad Throughput
Package
Product Overview
The Micron MT25QU256ABA8ESF-0SIT is a 256Mb (32,768K x 8) serial NOR Flash memory from the high-performance MT25Q family[reference:0]. Operating at a low voltage of 1.7V to 2.0V (1.8V nominal)[reference:1][reference:2], this device is optimized for advanced embedded systems requiring large code storage, execute‑in‑place (XIP), and fast data access. It supports standard SPI, Dual SPI, and Quad SPI modes, with a maximum clock frequency of 166 MHz in Quad I/O mode[reference:3][reference:4], delivering a read throughput of up to 90 MB/s.
The device is organized as 32,768 programmable pages of 256 bytes each, with a flexible erase architecture: 4KB sectors, 32KB/64KB blocks, and full chip erase[reference:5]. Housed in a standard 16‑pin SOIC (300mil) package[reference:6][reference:7], it operates over the industrial temperature range of -40°C to +85°C[reference:8][reference:9]. With 100,000 program/erase cycles and 20‑year data retention[reference:10], the MT25QU256ABA delivers the endurance and reliability required for industrial control, networking, medical devices, and automotive applications.
📊 Technical Specifications
| Density / Organization | 256Mb (32,768 x 8) — 32MB[reference:11] |
| Memory Interface | SPI / Dual SPI / Quad SPI (1-1-1, 1-1-2, 1-1-4, 1-4-4)[reference:12] |
| Max Clock Frequency | 166 MHz (Quad I/O)[reference:13][reference:14] |
| Quad Read Throughput | Up to 90 MB/s |
| Page Program Size | 256 bytes per page |
| Erase Granularity | 4KB sector, 32KB block, 64KB block, full chip erase[reference:15] |
| Supply Voltage (Vcc) | 1.7V – 2.0V (1.8V typical)[reference:16][reference:17] |
| Operating Temperature | Industrial: -40°C to +85°C[reference:18][reference:19] |
| Storage Temperature | -65°C to +150°C |
| Package Type | 16‑pin SOIC (300mil, 10.3 x 10.3 x 2.65 mm)[reference:20][reference:21] |
| Package Dimensions | 10.30 x 10.30 x 2.65 mm[reference:22] |
| Endurance | 100,000 program/erase cycles[reference:23] |
| Data Retention | 20 years @ 55°C[reference:24] |
| Active Read Current | 25 mA (typical) |
| Standby Current | 15 µA (typical) |
| Write Protection | Hardware WP# pin, software block protection[reference:25] |
| Security Features | Unique 64‑bit ID, 4K‑bit OTP security register |
| Suspend/Resume | Supported for program/erase operations |
| RoHS / Halogen Free | Yes — RoHS3 compliant[reference:26] |
| Moisture Sensitivity Level | MSL 3 (168 hours)[reference:27] |
| Part Status | Active — Contact Sales[reference:28] |
✨ Key Features
- ✅ High‑Speed Quad SPI – 166MHz clock, up to 90 MB/s throughput for fast XIP and boot[reference:29]
- ✅ Low Voltage 1.8V Operation – 1.7‑2.0V range, ideal for advanced SoCs and FPGAs[reference:30]
- ✅ 256Mb High Density – 32MB for large firmware, FPGA bitstreams, and data logging[reference:31]
- ✅ Execute‑in‑Place (XIP) Support – Direct code execution from Flash memory
- ✅ Flexible Erase Architecture – 4KB sectors, 32KB/64KB blocks, plus chip erase[reference:32]
- ✅ Hardware & Software Write Protection – WP# pin and configurable protected area[reference:33]
- ✅ Unique 64‑bit ID & OTP Register – factory‑programmed unique ID, 4K‑bit OTP for secure keys
- ✅ Suspend/Resume Capability – allows interruption of erase/program for latency‑sensitive reads
- ✅ High Reliability – 100K P/E cycles, 20‑year data retention at 55°C[reference:34]
- ✅ Industrial Temperature Range – -40°C to +85°C for harsh environments[reference:35]
- ✅ Standard SOIC-16 Package – 300mil body, easy PCB layout and drop‑in replacement[reference:36]
- ✅ JEDEC Standard Command Set – interoperable with most SPI NOR Flash controllers
- ✅ Long‑term Availability – Micron’s commitment to industrial and embedded markets (15+ years)
⚡ Quad SPI Performance & Modes
Compatible with all SPI hosts[reference:37]
Good speed / pin trade‑off
Optimal XIP performance
The MT25QU256ABA supports QPI (Quad Peripheral Interface) mode where all commands and addresses are transmitted over 4 I/O lines. It also features Single Transfer Rate (STR) mode, providing flexibility for high‑speed random access and enabling seamless execute‑in‑place (XIP) without code shadowing to RAM[reference:38].
🔒 Security & Write Protection Features
🔑 Unique 64‑bit Device ID
Each MT25QU256ABA is factory‑programmed with a unique serial number, enabling device authentication, anti‑counterfeiting, and simple inventory tracking.
📦 4K‑bit OTP (One‑Time Programmable) Register
A dedicated OTP area for permanent storage of encryption keys, serial numbers, or manufacturing data. The OTP region can be locked permanently to prevent further writes.
🛡️ Flexible Write Protection
The Block Protection bits allow software‑defined protection of up to 50% of the memory in 4KB increments. When the hardware WP# pin is driven low, the status register becomes read‑only, preventing any modification to the protection scheme[reference:39].
⏸️ Program/Erase Suspend
During a long erase operation (up to 400ms for 64KB block), the host can issue a suspend command, perform a read from another sector, and then resume the erase without data corruption.
📦 Ordering Information & Part Number Decoder
| Orderable Part Number | Temperature | Package | Description |
|---|---|---|---|
| MT25QU256ABA8ESF-0SIT | -40°C to +85°C | SOIC-16 (300mil) | Industrial, 1.8V, tray |
| MT25QU256ABA8ESF-0SIT TR | -40°C to +85°C | SOIC-16 (300mil) | Tape & Reel (1000 pcs/reel)[reference:40] |
| MT25QU256ABA1EW7-0SIT | -40°C to +85°C | WPDFN-8 (6x5mm) | Industrial, compact package |
| MT25QU256ABA8E12-0SIT | -40°C to +85°C | TBGA-24 | Industrial, BGA package |
• MT25Q – Micron Quad SPI NOR Flash family
• U – 1.8V (U) vs L for 3.3V
• 256 – 256Mb density
• ABA – Configuration / die revision
• 8E – Package: SOIC-16 (300mil)
• SF – Industrial temperature (-40°C to +85°C) and green
• 0SIT – Tape & Reel (0), SIT = industrial temperature, lead‑free
🏆 Micron Technology – Leader in NOR Flash
Micron Technology is a global leader in memory and storage solutions, with over 40 years of innovation. The MT25Q family represents Micron’s high‑performance, low‑voltage NOR Flash portfolio, widely used in industrial, automotive, and consumer electronics. Micron’s NOR Flash products are known for excellent endurance, data retention, and long‑term supply continuity.
- Top 3 NOR Flash supplier worldwide – trusted by major OEMs
- AEC‑Q100 qualified automotive grade options available
- ISO 9001, ISO 14001, IATF 16949 certified fabs
- Advanced NOR process nodes for high density and low power
- Long‑term product commitment – 15‑20 year availability for industrial and automotive
🛠️ Development Tools & Support
Micron provides free samples, evaluation boards, and direct FAE support through authorized distributors. Design‑in assistance, IBIS models, and failure analysis are available for qualified customers.
📄 Certifications & Compliance
- RoHS 2011/65/EU (Compliant)[reference:44]
- REACH SVHC (Compliant)[reference:45]
- Halogen‑free per IEC 61249-2-21
- Conflict Minerals (CFSI) report available
- ECCN: 3A991.b.1.a[reference:46]
📦 Packaging & Logistics
- Tray: 1440 pieces per tray[reference:47]
- Tape & Reel: 1000 pieces per 13" reel[reference:48]
- Moisture Sensitivity Level: MSL 3[reference:49]
- Lead finish: NiPdAu (green, lead‑free)
- Lead time: 8‑10 weeks ARO, stock via distributors
FAQ
| Quantity | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $7.03200 | $7.03 |
| 10+ | $6.04628 | $60.46 |
| 30+ | $5.44628 | $163.39 |
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