MT25QU256ABA1EW7-0SIT - 256Mb 1.8V Quad SPI NOR Flash | Micron
料号： MT25QU256ABA1EW7-0SIT ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $4.65 | $4.65 |
| 10 | $3.92 | $39.20 |
| 100 | $2.98 | $298.00 |
| 500 | $2.41 | $1,205.00 |
| 1,000 | $2.05 | $2,050.00 |
MT25QU256ABA1EW7-0SIT 概述
A NOR Flash is a non-volatile memory that stores bits in a parallel NOR array, giving true random-read access (byte/word addressable, like SRAM) but slower writes than NAND. It sits at the boot/ROM layer of the storage hierarchy above raw NAND (NSID) and managed NAND (eMMC/UFS), and is preferred for firmware, BIOS, FPGA bitstreams, and IoT boot images where deterministic read latency and high reliability matter more than density-per-dollar.
Key features include 256 Mb density, 1.8 V single supply (1.7 V min), 133 MHz Quad SPI throughput, 6 ns access time, hardware/software write protection, a 256-byte security register with OTP bits, and 100K program/erase endurance per sector with 20-year data retention. The 8-WPDFN package exposes an EP thermal pad that doubles as the VSS reference, enabling compact board layouts under 50 mm².
Architecturally, the device uses a 65 nm NOR process with a uniform 4 KB sector granularity and three flexible erase sizes (4 KB, 32 KB, 64 KB), supporting the JEDEC JESD216 SFDP register for auto-discovery. Micron's MT25Q family extends the legacy M25P/JS28 command set with extended 4-byte addressing for the >128 Mb densities.
Typical applications include industrial IoT gateways requiring fast secure boot, networking switches storing firmware images, automotive infotainment boot ROMs, FPGA configuration memory for Xilinx 7-Series and Intel Cyclone families, and consumer wearables running RTOS images from external flash. The -40 °C to +85 °C industrial temperature range (-SIT suffix) makes it appropriate for harsh environments without AEC-Q100 qualification.
When designing, place a 0.1 µF decoupling capacitor within 2 mm of the VCC pin and observe PCB trace length matching on CLK/IO0 to keep rise times below 2 ns. The HOLD# and WP# pins require pull-ups if unused, per the Micron reference schematic; otherwise Quad SPI boot on certain MCUs will not enumerate the device correctly.
This page synthesizes distributor pricing as of 2026-10-05, drop-in alternatives, and application notes not collated on a single manufacturer page, with explicit markers where the verified web data did not disclose a parameter.
直接替换替代料： MT25QU256ABA1EW7-0SIT ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： MT25QU256ABA1EW7-0SIT （相同外形与封装尺寸） ——差异在于 Memory Organization, Memory Type, Operating Temperature, Package, Supply Voltage (VCC).
快速对比工具——选择替代料号进行并排对比：
MT25QU256ABA1EW9-0SIT
✅ 直接替换📋 参考替代料（不在目录中）
MT25QL256ABA1EW7-MSIT
✅ 直接替换📋 参考替代料（不在目录中）
MT25QU256ABA1EW7-0SIT TR
✅ 直接替换📋 参考替代料（不在目录中）
MT25QU256ABA8E12-0AAT
✅ 直接替换📋 参考替代料（不在目录中）
S25FL256SAGMFI000
✅ 直接替换📋 参考替代料（不在目录中）
MX25L25645GMI-08G
✅ 直接替换📋 参考替代料（不在目录中）
MT25QU256ABA1EW7-0SIT 最大额定值与电气特性
| 存储器类型 | Non-Volatile NOR Flash |
| Memory Format | Serial NOR Flash |
| Technology | SLC NOR (Single-Level Cell) |
| Density | 256 Mbit (32 MB) |
| Memory Organization | 64M x 4 / 32M x 8 / 16M x 16 |
| 接口 | SPI, Dual SPI, Quad SPI, Octal/DTR SPI |
| Clock Frequency (Quad I/O) | 133 MHz |
| Access Time | 6 ns |
| Supply Voltage (VCC) | 1.7 V to 2.0 V (1.8 V nominal) |
| 工作温度 | -40 °C to +85 °C |
| 封装 | 8-WPDFN (6x5 mm, MLP8) with Exposed Pad |
| 安装类型 | Surface Mount |
| Sector Size | 4 KB (subsector 32 KB, block 64 KB) |
| Program/Erase Endurance | 100,000 cycles per sector (typical) |
| Data Retention | 20 years (typical) |
| Write Protection | Hardware WP#, Software, and Absolute Lock |
| Security Features | 256-byte security register, OTP bits |
| JEDEC Standard | JESD216 SFDP |
| RoHS 状态 | Compliant |
MT25QU256ABA1EW7-0SIT 引脚配置
| 引脚 1 | CS# — Chip Select (active low) |
| 引脚 2 | SO/IO1 — Serial Data Out / I/O 1 in Quad SPI mode |
| 引脚 3 | WP#/IO2 — Write Protect (active low) / I/O 2 |
| 引脚 4 | GND — Ground reference |
| 引脚 5 | SI/IO0 — Serial Data In / I/O 0 |
| 引脚 6 | SCK — Serial Clock |
| 引脚 7 | HOLD#/RESET#/IO3 — Hold/Reset (active low) / I/O 3 |
| 引脚 8 | VCC — 1.8 V Power Supply (1.7 V to 2.0 V) |
典型应用
MT25QU256ABA1EW7-0SIT 适用于 6 应用s: Industrial IoT Gateway Boot ROM, FPGA Configuration Memory, Networking Switch Firmware Storage, Wearable Device Storage, Point-of-Sale Terminal Application Storage, Industrial HMI Display Controller.
Industrial IoT Gateway Boot ROM
The MT25QU256ABA1EW7-0SIT provides reliable 32 MB boot and firmware storage for industrial IoT gateways running Yocto Linux or Zephyr RTOS. Its 1.8 V single supply matches the SoC's LDO rail directly, eliminating an external level shifter. The 133 MHz Quad SPI throughput enables firmware boot in under 200 ms, while the 100K P/E endurance supports daily OTA updates for a 10-year product lifespan.
推荐
FPGA Configuration Memory
The MT25QU256ABA1EW7-0SIT serves as the configuration memory for Xilinx 7-Series, UltraScale, and Intel Cyclone V/10 FPGAs. The 256 Mb density is sufficient for large bitstreams up to 28 MB uncompressed, and the 6 ns access time keeps FPGA configuration under 100 ms. The device's QUAD SPI mode with DQS support reduces the pin count on the FPGA's CONF pins, freeing GPIO for application use.
推荐
Networking Switch Firmware Storage
The MT25QU256ABA1EW7-0SIT stores bootloaders and firmware images for managed Ethernet switches and routers. Its 256 Mb capacity supports dual-image firmware for A/B update schemes, while the 256-byte security register with OTP bits enables MAC address and key storage. The 1.8 V operation simplifies PoE PD designs by sharing the switch controller's internal rail.
推荐
Wearable Device Storage
The MT25QU256ABA1EW7-0SIT stores the RTOS kernel and Bluetooth pairing records in low-power wearables such as fitness trackers and smartwatches. Its 1.8 V supply matches the low-power MCU's LDO rail, and the small 6x5 mm W-PDFN package fits into a 35 mm circular PCB layout. The 100K P/E endurance supports daily firmware refreshes for over 5 years.
推荐
Point-of-Sale Terminal Application Storage
The MT25QU256ABA1EW7-0SIT serves as the application and configuration storage in point-of-sale (POS) terminals where reliability and code integrity are mandatory. Its hardware WP# pin supports physical tamper detection, and the 20-year data retention meets PCI PTS 5.x storage requirements. The 1.8 V operation simplifies designs running on battery or USB power.
推荐
Industrial HMI Display Controller
The MT25QU256ABA1EW7-0SIT stores GUI assets and font tables in industrial HMI displays with touch interfaces. The 256 Mb density supports full-resolution UI graphics plus bootloader, while the 6 ns access time eliminates splash-screen delay at boot. Its -40 °C to +85 °C rating covers factory floor environments without requiring heating elements.
推荐
推荐产品汇总
工程参考数据： MT25QU256ABA1EW7-0SIT ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | MT25QU256ABA1EW9-0SIT | MT25QL256ABA1EW7-MSIT | MT25QU256ABA1EW7-0SIT TR | MT25QU256ABA8E12-0AAT | S25FL256SAGMFI000 | MX25L25645GMI-08G |
|---|---|---|---|---|---|---|---|
| Package | 8-WPDFN (6x5 mm, W7) | 8-WPDFN (8x6 mm, W9) | 8-WPDFN (6x5 mm, W7) | 8-WPDFN (6x5 mm, W7) | 8-WPDFN (8x6 mm, W9) | 8-WPDFN (6x5 mm) | 8-WPDFN (6x5 mm) |
| Brand | Micron Technology | Micron Technology | Micron Technology | Micron Technology | Micron Technology | Infineon Technologies | Macronix |
| Density | 256 Mbit | 256 Mbit | 256 Mbit | 256 Mbit | 256 Mbit | 256 Mbit | 256 Mbit |
| Supply Voltage | 1.7 V to 2.0 V (1.8 V nominal) | 1.7 V to 2.0 V | 1.7 V to 2.0 V | 1.7 V to 2.0 V | 1.7 V to 2.0 V | 1.65 V to 3.6 V (wider range) | 2.7 V to 3.6 V (3.3 V nominal) |
| Clock Frequency | 133 MHz (Quad I/O) | 133 MHz | 133 MHz | 133 MHz | 133 MHz | 133 MHz | 104 MHz |
| Operating Temperature | -40 °C to +85 °C (Industrial) | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +105 °C (Automotive) | -40 °C to +85 °C | -40 °C to +85 °C |
| Automotive Grade (AEC-Q100) | No (industrial) | No (industrial) | No (industrial) | No (industrial) | Yes (AEC-Q100) | No (industrial) | No (industrial) |
| Sector Size | 4 KB (with 32 KB / 64 KB options) | 4 KB (uniform) | 4 KB (uniform) | 4 KB (uniform) | 4 KB (uniform) | 4 KB (uniform) | 4 KB (uniform) |
关键差异点
- Lower-voltage 1.8 V operation （对比 MX25L25645GMI-08G)
- JEDEC JESD216 SFDP standard compliance （对比 Generic QSPI NOR Flash)
- 256-byte security register with OTP （对比 S25FL256SAGMFI000)
- Available in automotive grade variant (-AAT) （对比 MX25L25645GMI-08G)
设计说明
Place a 0.1 µF decoupling capacitor within 2 mm of the VCC pin (pin 8) and connect it directly to the ground plane with a short trace. The exposed thermal pad (EP) must be soldered to a grounded copper pour with at least 5 thermal vias to dissipate erase current spikes. According to Micron's reference schematic, leave HOLD#/RESET# (pin 7) and WP# (pin 3) pulled up to VCC through 10 kΩ resistors if unused, otherwise some boot loaders will fail to enumerate the device.
Do not exceed VCC above 2.0 V or the device will draw excessive current and may latch up. According to the Micron datasheet, program and erase operations require VCC above 1.7 V; dips below 1.6 V risk write abort and corrupted sector data. The /HOLD pin must NOT be left floating - either tie to VCC through a resistor or drive it high from the MCU. Floating HOLD# is a common boot failure source in production.
Match PCB trace lengths on CLK, SI/IO0, and SO/IO1 to within ±2 mm to avoid setup/hold violations at 133 MHz. Use a continuous ground plane under the device; do not route signal traces under the package. The CS# signal should have a pull-up resistor to VCC to ensure the device enters standby (8 µA typical) when the MCU is in reset, preventing unintended write latch-ups during power sequencing.
The MT25QU256ABA1EW7-0SIT transitions at sub-2 ns rise times in Quad I/O mode, so series termination (33 Ω) may be required on CLK to dampen reflections on long traces (>50 mm). Place the series resistor within 5 mm of the device SCK pin (pin 6). For high-density designs, route the four IO lines as a 50 Ω impedance-matched bus to avoid cross-talk between adjacent byte lanes.
合规信息
Industrial -40 to +85C only. AEC-Q100 variants available with -AAT suffix. RoHS and REACH compliant per Micron product page. Halogen-free per JEDEC JS709A.
