MT28EW256ABA1HJS-0SIT - 256Mb Parallel NOR Flash, 56-TSOP | Micron
料号： MT28EW256ABA1HJS-0SIT ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $4.92 | $4.92 |
| 10 | $4.45 | $44.50 |
| 100 | $3.98 | $398.00 |
| 500 | $3.62 | $1,810.00 |
| 1,000 | $3.28 | $3,280.00 |
MT28EW256ABA1HJS-0SIT 概述
Parallel NOR Flash is a type of non-volatile memory that provides random-access read, byte/word program, and sector erase operations via a parallel data bus and dedicated control signals such as CE#, OE#, WE#, and RY/BY#. Within the broader memory hierarchy, parallel NOR sits alongside NAND Flash and SRAM as a non-volatile storage tier, but it is uniquely valued for its deterministic read latency, XIP (execute-in-place) capability, and high endurance relative to NAND. The MT28EW family specifically targets embedded designs that require reliable code storage and frequently-updated data logs in industrial, automotive, and networking systems.
Key features of the MT28EW256ABA1HJS-0SIT include 256 Mbit density (32M x 8 or 16M x 16), hardware and software write protection, a 100,000-cycle program/erase endurance rating, 20-year data retention, sector-erase architecture with 200 ms typical erase time per 128 KB block, and a top or bottom boot block configuration. The device supports JEDEC-standard command set, CFI (Common Flash Interface) for device identification, and provides a RY/BY# status output for hardware-synchronized programming control.
The device uses a single 3V power rail and integrates an internal program/erase state machine, eliminating the need for external high-voltage generation. It supports both 8-bit and 16-bit data bus widths selected via the BYTE# pin, allowing system designers to choose the optimal interface for their microcontroller or SoC. The 56-TSOP package provides a thin, surface-mountable form factor with a 18.4 mm body width per JEDEC MO-142 standards, enabling high-density PCB layouts and standard SMT assembly processes.
Typical applications include automotive infotainment and instrument-cluster firmware storage, industrial PLC program memory, networking equipment boot and configuration Flash, factory automation controllers, and consumer electronics requiring fast XIP code execution. The wide operating temperature range and 100k P/E cycles also make it suitable for data logging in industrial IoT edge nodes where frequent parameter updates occur.
When designing with this device, ensure that the host controller's address and data bus timing match the 75 ns access time. Decoupling the VCC and VCCQ rails with 0.1 uF ceramic capacitors placed within 5 mm of the package pins is required, and unused input pins should be tied to VCCQ or GND through 10 kohm resistors to prevent floating-state current draw.
This page synthesizes Micron datasheet parameters, distributor pricing, drop-in alternatives from the same MT28EW family, and practical design notes not found in the manufacturer datasheet alone, giving engineers a single-source reference for selecting and qualifying this parallel NOR Flash in new designs.
直接替换替代料： MT28EW256ABA1HJS-0SIT ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
MT28EW256ABA1HPC-0SIT
✅ 直接替换📋 参考替代料（不在目录中）
MT28EW256ABA1HPN-0SIT
✅ 直接替换📋 参考替代料（不在目录中）
MT28EW256ABA1LPC-0SIT
✅ 直接替换📋 参考替代料（不在目录中）
MT28EW512ABA1LJS-0AAT
✅ 直接替换📋 参考替代料（不在目录中）
MX29LV256CBTC-70G
✅ 直接替换📋 参考替代料（不在目录中）
W29GL256S9T
✅ 直接替换📋 参考替代料（不在目录中）
MT28EW256ABA1HJS-0SIT 最大额定值与电气特性
| 存储器类型 | Non-Volatile |
| Memory Format | FLASH - NOR |
| Density | 256 Mbit (32 MB) |
| 存储组织 | 32M x 8 / 16M x 16 |
| Bus Width | x8 / x16 (BYTE# selectable) |
| 接口 | Parallel (asynchronous) |
| Access Time | 75 ns |
| Supply Voltage (VCC) | 2.7 V to 3.6 V |
| 工作温度 | -40C to +85C |
| Program/Erase Endurance | 100,000 cycles |
| Data Retention | 20 years |
| Sector Erase Time (typ) | 200 ms @ 128 KB block |
| 封装 | 56-TSOP (TFSOP-56, 18.4 mm body) |
| 安装类型 | Surface Mount |
| Write Protection | Hardware + Software |
| Boot Block Configuration | Top or bottom boot (family variant) |
| CFI Support | Yes (JEDEC standard) |
| Status Output | RY/BY# pin |
| RoHS 状态 | Compliant |
MT28EW256ABA1HJS-0SIT 56-tsop (tfsop-56, 18.4 mm body) 引脚配置指南
MT28EW256ABA1HJS-0SIT（56-tsop (tfsop-56, 18.4 mm body) 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： MT28EW256ABA1HJS-0SIT.
请参阅 数据手册 以查看完整引脚配置。
典型应用
MT28EW256ABA1HJS-0SIT 适用于 6 应用s: Industrial PLC Program Memory, Networking Equipment Boot and Configuration Flash, Automotive Infotainment Firmware Storage, Factory Automation and Process Control, Industrial IoT Edge Gateways, Consumer Electronics and Gaming Peripherals.
Industrial PLC Program Memory
The MT28EW256ABA1HJS-0SIT is well suited to industrial PLC program memory thanks to its 32 MB density, 75 ns access time, and -40C to +85C industrial rating. The deterministic read latency enables XIP execution of ladder-logic and motion-control firmware directly from Flash, eliminating the need for shadow SRAM. Hardware and software write protection guard against accidental reprogramming in noisy factory environments, and the 100,000-cycle endurance supports frequent PLC recipe updates. The 3V supply is compatible with most 32-bit industrial MCUs.
推荐
Networking Equipment Boot and Configuration Flash
Routers, switches, and wireless base stations commonly boot their operating system from parallel NOR Flash, and the MT28EW256ABA1HJS-0SIT fits this role with 32 MB of storage and 75 ns random-access reads. The RY/BY# status output allows the network processor to poll erase/program completion without software timers. The 20-year data retention guarantees long-term integrity of boot loaders and configuration tables in always-on networking gear. Sector erase architecture (128 KB uniform blocks) supports partial firmware updates over the network without erasing the entire image.
推荐
Automotive Infotainment Firmware Storage
The MT28EW256ABA1HJS-0SIT can serve as firmware storage for automotive infotainment head units and instrument clusters, where 32 MB is sufficient for boot loader, OS kernel, and asset metadata. Its -40C to +85C temperature range covers cabin and under-hood-adjacent locations. The wide 2.7V-3.6V supply tolerates automotive battery transients, and the 100k P/E endurance supports periodic map and feature updates. Designers should evaluate AEC-Q100-qualified MT28EW variants for safety-critical clusters; this part suits infotainment where AEC-Q100 is not strictly required.
推荐
Factory Automation and Process Control
Programmable logic controllers, motor drives, and process-control HMIs use the MT28EW256ABA1HJS-0SIT to store control algorithms, calibration data, and human-machine interface graphics. The 75 ns access time is fast enough for direct XIP execution of real-time control loops on Cortex-M4 and Cortex-R5 MCUs. The hardware write-protect pin allows physical security against unauthorized firmware modification. The 56-TSOP package with 18.4 mm body width fits the standard footprint used in DIN-rail industrial modules and supports reflow soldering for high-volume production.
推荐
Industrial IoT Edge Gateways
Edge gateways that aggregate sensor data from Modbus, CAN, or Ethernet/IP networks need reliable local firmware storage, and the MT28EW256ABA1HJS-0SIT provides 32 MB with high endurance for container images and event logs. Its 3V single supply simplifies power tree design in battery-backed gateways, and the sector-erase architecture (200 ms per 128 KB) supports over-the-air firmware updates with minimal downtime. The hardware and software write protection mechanisms guard against power-loss corruption during OTA writes, and the 20-year retention preserves logs and certificates across long deployment lifecycles.
推荐
Consumer Electronics and Gaming Peripherals
Game consoles, set-top boxes, and high-end peripherals use parallel NOR Flash for fast firmware boot, and the MT28EW256ABA1HJS-0SIT offers 32 MB of storage in a thin 56-TSOP package that fits slim consumer housings. The 75 ns access time supports instant-on user experiences, and the dual x8/x16 bus modes let designers match interface width to the host SoC. The 100k program/erase endurance allows frequent firmware upgrades via USB or wireless channels without wear concerns. The wide supply range and lead-free 56-TSOP package support standard SMT assembly at consumer-grade cost targets.
推荐
推荐产品汇总
工程参考数据： MT28EW256ABA1HJS-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 | MT28EW256ABA1HPC-0SIT | MT28EW256ABA1HPN-0SIT | MT28EW256ABA1LPC-0SIT | MT28EW512ABA1LJS-0AAT | MX29LV256CBTC-70G | W29GL256S9T |
|---|---|---|---|---|---|---|---|
| Brand | Micron Technology | Micron Technology | Micron Technology | Micron Technology | Micron Technology | Macronix | Winbond |
| Package | 56-TSOP | 56-TSOP | 56-TSOP | 56-TSOP | 56-TSOP | 56-TSOP | 56-TSOP |
| Density | 256 Mbit (32 MB) | 256 Mbit | 256 Mbit | 256 Mbit | 512 Mbit | 256 Mbit | 256 Mbit |
| Bus Width | x8 / x16 | x8 / x16 | x8 / x16 | x8 / x16 | x8 / x16 | x8 / x16 | x16 |
| Access Time | 75 ns | 75 ns | 75 ns | 75 ns | 70 ns | 70 ns | 90 ns |
| Supply Voltage | 2.7V to 3.6V | 2.7V to 3.6V | 2.7V to 3.6V | 2.7V to 3.6V | 2.7V to 3.6V | 2.7V to 3.6V | 2.7V to 3.6V |
| Endurance (P/E cycles) | 100,000 | 100,000 | 100,000 | 100,000 | 100,000 | 100,000 | 100,000 |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| Data Retention | 20 years | 20 years | 20 years | 20 years | 20 years | 20 years | 20 years |
关键差异点
- Industrial -40C to +85C qualification with 100k P/E endurance （对比 W29GL256S9T)
- 75 ns access time in 56-TSOP package （对比 MX29LV256CBTC-70G)
- JEDEC-standard CFI query support （对比 MT28EW256ABA1LPC-0SIT)
设计说明
Place 0.1 uF X7R ceramic decoupling capacitors within 5 mm of every VCC pin on the 56-TSOP package to suppress switching noise during program and erase cycles. The MT28EW draws peak inrush current during sector erase, so a bulk 10 uF tantalum or polymer capacitor is recommended on the VCC rail if the upstream regulator has soft-start current limiting. Ensure the host supplies a stable 2.7V-3.6V rail with less than 100 mV ripple, as VCC transients can trigger spurious write protection lockouts.
Route the parallel address and data bus with matched-length traces within 25 mm of the host controller to avoid bus skew on x16 mode. The CE#, OE#, and WE# control signals should be guarded with ground traces to prevent crosstalk, and the BYTE# pin must be tied to VCC for x16 mode or to GND for x8 mode via a 10 kohm resistor to prevent floating-state corruption. The RY/BY# status output can be left floating if not used, but a 10 kohm pull-up to VCC is recommended for noise immunity.
Avoid hot-plugging the MT28EW256ABA1HJS-0SIT into a live system without proper power sequencing - the VCC ramp should be monotonic from 0V to 3.3V within 100 ms to prevent latch-up. Confirm the boot-block configuration (top vs bottom) before designing the firmware image layout, as swapping the part number suffix can flip the sector map and cause the boot loader to read from the wrong region. Always issue a CFI query after power-up to verify the device ID matches the expected manufacturer and density.
合规信息
RoHS and lead-free per Micron product declaration. Not AEC-Q100 qualified - this part suits industrial and non-safety automotive; for AEC-Q100 automotive safety, consult Micron's automotive MT28EW variants.
